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Your Cisco 12016 GSR is equipped as ordered and is ready for installation and startup when it leaves the factory. After you install and configure your router, you might need to perform specific maintenance procedures or replace field-replaceable units (FRUs) to ensure that the GSR continues to operate properly. Also, as your networking requirements change, you might need to upgrade your system by adding or changing components. This chapter describes how to maintain your Cisco 12016 GSR. The first section in this chapter explains when and how to power down the Cisco 12016 GSR. The remaining sections describe the following maintenance procedures:
To prevent problems, before performing any procedures in this chapter, review the "Safety Recommendations" section in "Preparing for Installation." In particular, observe the guidelines for preventing electrostatic discharge (ESD) damage described in the "Preventing Electrostatic Discharge Damage" section in "Preparing for Installation," and use Figure 2-1 in "Preparing for Installation," as a reference in locating and using the ESD sockets on the front of the Cisco 12016 GSR chassis.
Finally, before you reconfigure or perform maintenance procedures for your router, also review the safety warnings listed in the Regulatory Compliance and Safety Information for the Cisco 12000 Series Gigabit Switch Router (Publication Number 78-4347-xx) that accompanied your Cisco 12016 GSR.
You should power down the router before performing the following maintenance tasks:
Unless otherwise noted, the rest of the maintenance tasks described in this chapter can be performed while the router remains powered up.
To power down the router, follow these steps:
Step 1 Turn off all circuit breakers for source power lines connected to the power shelf.
Step 2 Verify that the LED labeled PWR OK on each of the power modules is off, and that the power fan in each module is off.
Step 3 Verify that the green LED labeled OK on each blower module is off.
The chassis front covers for the power shelf and upper blower module, upper card cage, lower card cage, and lower blower module are fastened to the chassis by ball studs that insert into sockets on the front of the chassis. These front covers are referred to as snap-on front covers.
The partial front cover on the air filter door is fastened to the air filter door by four screws inserted from the back side of the air filter door. You must open the air filter door to remove the partial front cover. This partial front cover is referred to as the air filter door front cover.
This section provides two procedures:
You can perform these procedures while the Cisco 12016 GSR remains powered up.
You need the following tools and parts to remove and replace a chassis front cover:
Remove a snap-on front cover as instructed in the "Removing the Chassis Front Covers" section in "Installing a Cisco 12016 GSR."
Reinstall a snap-on front cover as instructed in the "Reinstalling the Chassis Front Covers" section in "Installing a Cisco 12016 GSR."
This section provides two procedures:
To remove the air filter door front cover, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Open the air filter door. Use Figure 7-1 as a reference and follow the steps outlined below:
(a) Loosen the two captive screws on each side of the air filter door.
(b) Grasp the sides of the air filter door front cover and carefully swing the door out and down, away from the switch fabric card cage.
The air filter door is attached to the chassis by a pair of spring-loaded arms on either side of the door. When the door is fully extended away from the fabric card cage, it hangs down in front of the lower card cage.
 | Caution Be especially careful not to damage the honeycomb screen on the back of the air filter door and on the inside of the switch fabric card cage. Damaging the honeycomb screen can restrict the air flow and cause an overtemperature condition in the router. It can also diminish EMI protection. |
Step 3 Use the Phillips screwdriver to remove the four screws that fasten the partial front cover to the air filter door. (See Figure 7-2.) Set the four screws safely aside; you will need them to install the replacement front cover.
Step 4 Set the air filter door front cover safely aside.
| Caution If you are not immediately replacing the air filter door front cover, close and fasten the air filter door to maintain correct EMI performance and to minimize the amount of dust drawn into the card cages. |
Step 5 To close the air filter door, use Figure 7-3 as a reference and follow the steps outlined below; otherwise, proceed to the "Installing the Replacement Air Filter Door Front Cover" section.
(a) Grasp the sides of the air filter door and pivot it up so that it is aligned with the opening of the switch fabric card cage and the four guide pins are inserted in the corresponding holes on each side of the card cage.
| Caution All four sides of the air filter door are lined with EMI-preventive gaskets consisting of many raised, conductive contacts. Align and seat the door carefully to avoid damaging the EMI-preventive gasket contacts. A damaged gasket can result in reduced EMI performance. |
(b) Push the air filter door until it is seated in the opening of the switch fabric card cage and tighten the four captive screws.
To install the replacement front cover on the air filter door, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 If you have not already done so, open the air filter door on the front of the chassis as shown in Figure 7-1 and instructed in Step 2 of the procedure described in the "Removing the Air Filter Door Front Cover" section, earlier in this chapter.
Step 3 Hold the replacement front cover by its outside edges and align the screw holes in the front cover with the holes on the air filter door.
Step 4 Insert the four screws that you removed earlier and use the Phillips screwdriver to tighten the four screws as shown in Figure 7-2.)
| Caution To avoid damaging the screws or the threaded inserts in the front cover, do not overtighten the screws. |
Step 5 Close the air filter door as shown in Step 5 of the procedure described in the "Removing the Air Filter Door Front Cover" section, earlier in this chapter.
| Caution The air filter door must be closed and secured at all times to maintain correct EMI performance and to minimize the amount of dust drawn into the card cages. |
The Cisco 12016 GSR has a serviceable air filter mounted in a swing-out door on the front of the switch fabric card cage. (See Figure 7-4.) The air filter removes dust from the room air drawn into the router by the two blower modules. Once a month (or more often in dusty environments), you should examine the air filter. If the filter appears dirty, you can either vacuum or replace it. If the filter appears worn or is torn, dispose of the filter in a responsible manner and install a replacement air filter.
This section provides two procedures:
You need the following items for these procedures:
To remove and clean the air filter, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Loosen the captive screws (two on each side of the air filter door) that fasten the air filter door to the chassis. (See Figure 7-4.)
Step 3 Grasp the sides of the air filter door front cover and carefully swing the door down, away from the switch fabric card cage. (See Figure 7-4.)
Step 4 Push up on the front of the air filter with your palm and finger tips and carefully slide it out of the air filter door. (See Figure 7-5.)
Step 5 Move the air filter away from the front of the switch fabric card cage so that any dislodged dust will not be drawn into the chassis card cages.
Step 6 Visually check the condition of the air filter.
To install the chassis air filter, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Using two hands to support the air filter, orient it so that the metal braces on the back of the air filter face toward the switch fabric card cage. (See Figure 7-6.)
Step 3 Slide the air filter completely into the air filter door.
Step 4 Grasp the sides of the air filter door front cover and pivot the air filter door up so that it is aligned with the opening of the switch fabric card cage and the four guide pins are inserted in the corresponding holes on each side of the switch fabric card cage. (See Figure 7-7.)
Step 5 Push firmly on the air filter door until it is seated in the opening of the switch fabric card cage, then tighten the four captive screws.
| Caution The air filter door must be closed and secured at all times to maintain correct EMI performance. |
| Caution The Cisco 12016 GSR must be operated with all of its power modules installed at all times for electromagnetic compatibility (EMC). |
This section contains three procedures:
You need the following items to remove and replace an AC-input power supply:
Figure 7-8 shows the steps for removing an AC-input power supply from the standard power shelf. The steps shown in the figure and described in the procedures that follow also apply to removing a power supply form the optional power shelf.
To remove an AC-input power supply, follow these steps:
Step 1 Grasp the outside edges of the upper blower module bay and power shelf front cover and pull it straight out to detach the four ball studs on the front cover from the sockets on the front of the upper blower module bay and power shelf.
Step 2 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 3 To turn off the power supply and eject it from the shelf backplane connector, follow these steps:
(a) Lift the ejector lever spring clip to release the ejector lever from the power supply faceplate. (See Figure 7-8a.)
(b) Pivot the ejector lever away from the power supply faceplate to eject the power supply from the power shelf backplane connector. (See Figure 7-8b.)
Step 4 Grasp the power supply handle and pull the power supply halfway out of the bay. (See Figure 7-8c.)
Step 5 Use your free hand to support the power supply while you slide the power supply completely out of the bay. (See Figure 7-8c.)
Step 6 Set the defective power supply safely aside.
If you plan to return the defective power supply to the factory, repackage it in the shipping container you received with the replacement power supply.
Figure 7-9 shows the steps in installing the replacement AC-input power supply in the standard AC-input power shelf. The steps shown in the figure and described in the procedure that follows also apply to installing a power supply in the optional power shelf.
To install a replacement AC-input power supply, follow these steps:
Step 2 Lift the ejector lever spring clip on the power supply and pivot the ejector lever until it is perpendicular to the power supply faceplate. (See Figure 7-9a.)
| Caution To prevent damaging the power shelf backplane connector, do not use excessive force when inserting a power supply into the bay. |
Step 3 Using two hands to support and guide the power supply, slide it into the power shelf until the connector on the back of the power supply just makes contact with the connector on the backplane of the power shelf. (See Figure 7-9b.)
Step 4 Seat the power supply in the power shelf backplane by pivoting the ejector lever to hook the slot on the floor of the power shelf and pushing the ejector lever until it is flush with the power supply faceplate. (See Figure 7-9c.)
Step 5 Replace the front cover over the upper blower module bay and power shelf.
Step 6 Verify that the source AC circuit breakers servicing the source AC receptacles for the power shelf are switched on.
To check the power supply installation, follow these steps:
Step 1 Verify each of the following:
Step 2 Verify that the green LED labeled PWR OK on the power supply faceplate is on. This indicates that the source AC voltage is within the nominal operating range of 200 VAC to 240 VAC.
If the LED labeled PWR OK is off, verify the following:
Step 3 Verify that the three yellow LEDs labeled FAULT, TEMP, and ILIM are off.
If the LED labeled FAULT remains on, replace the existing power supply with a spare power supply. If the LED labeled PWR OK on the spare power supply goes on, return the faulty power supply for replacement.
If the LED labeled FAULT on the spare power supply remains on, suspect a faulty power shelf backplane connector in that power shelf bay.
If the power supply fails to operate properly after several attempts to power it up, contact a Cisco service representative for assistance.
For AC- power source operation, the Cisco 12016 GSR can be ordered with the standard AC-input power subsystem, which consists of a single-level AC-input power shelf with bays for three AC-input power supplies (see Figure 7-10a), or the optional AC-input power subsystem, which consists of a two-level AC-input power shelf with bays for four AC-input power supplies (see Figure 7-10b).
Both the standard AC-input power shelf and optional AC-input power shelf are modular sheet-metal enclosures that attach to the top of the Cisco 12016 GSR chassis and are secured to the chassis at both the front and back of the power shelf.
A captive jackscrew under the power shelf extends from the front panel of the power shelf to the back panel. The jackscrew is threaded to fit an insert on the chassis power interface panel. If it becomes necessary to remove the power shelf from the chassis, you use the captive jackscrew to unseat the connectors on the back panel of the power shelf from the connectors on the chassis power interface panel, and to reseat the power shelf in the connectors when you reinstall the power shelf.
Two captive screw on each of the power shelf front flanges fasten the power shelf to the rack-mounting flanges on each side of the chassis. Guide pins on the power interface panel on the chassis provide support for the back of the power shelf and ensure correct insertion alignment between the connectors on the back panel of the power shelf and the connectors on the chassis power interface panel.
This section contains four procedures:
You need the following items to remove and replace an AC-input power shelf:
To remove the AC-input power shelf from the chassis, follow these steps:
Step 1 Grasp the outside edges of the front cover over the upper blower module bay and power shelf and pull it straight out to detach the front cover from the ball stud sockets on the front of the upper blower module bay and power shelf.
Step 2 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 3 Remove all of the AC-input power supplies as described in the "Removing an AC-Input Power Supply from the Power Shelf" section.
Step 4 Disconnect the AC power cords from the AC-input receptacles on the back panel of the power shelf. Use Figure 7-11 as a reference and follow these steps:
(a) Disconnect the AC power cords from their source AC outlets.
(b) Pull back the retention clip holding the AC power cord coupler in the AC power cord receptacle on the back panel of the power shelf.
(c) Pull the AC power cord coupler from the AC power cord receptacle on the back panel of the power shelf.
Step 5 Loosen the captive screws (two on each side) that fasten the two power shelf front flanges to the rack-mounting flanges on the chassis. (See Figure 7-12.)
Step 6 Use a flat-blade screwdriver to turn the ejector jackscrew on the front panel of the power shelf (see Figure 7-12) counterclockwise to unseat the power shelf connectors from the connectors on the chassis power interface panel.
Step 7 Grasp the front flanges on the power shelf and pull the power shelf halfway out of the rack. (See Figure 7-13.)
Step 8 Grasping the power shelf flanges with both hands (see Figure 7-13), slowly lift the power shelf off the chassis and pull it out of the rack.
Step 9 Set the power shelf safely aside.
If you plan to return the defective power shelf to the factory, repackage it in the shipping container you received with the replacement power shelf.
To install the AC-input power shelf, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Grasp the power shelf front flanges with both hands, lift the power shelf to the top of the chassis, and set the bottom edges of the power shelf sides into the tracks on the top of the chassis. (See Figure 7-14.)
Step 3 Slide the power shelf onto the top of the chassis until the connectors on the power shelf back panel are within approximately three inches of the connectors on the chassis power interface panel.
Step 4 Seat the power shelf in the chassis power interface panel connectors. Use Figure 7-15 as a reference and follow the steps outlined below:
(a) Verify that the guide pins on the chassis power interface panel align with the holes on the back of the power shelf and that the ejector jackscrew aligns with the insert on the chassis power interface panel.
(b) Carefully push the power shelf until the connectors on the back of the power shelf contact the connectors on the chassis power interface panel.
(c) Use a flat-blade screwdriver to turn the ejector jackscrew clockwise to seat the power shelf connectors in the connectors on the chassis power interface panel.
When you cannot turn the ejector jackscrew any farther, the connectors are completely seated and the power shelf front flanges should be against the rack-mounting flanges on the chassis.
Step 5 Insert and tighten the captive screws (two on each side) on each power shelf front flange to secure the power shelf to the rack-mounting flanges on the chassis. (See Figure 7-12.)
Figure 7-16 shows how to connect AC power cords to the AC receptacles on the back of the AC-input power shelf after it has been installed on top of the Cisco 12016 GSR chassis.
To reconnect source AC to the AC-input power shelf, use Figure 7-16 as a reference and follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Beginning with the far right AC receptacle on the back of the power shelf (when facing the back of the power shelf), pull back the retention clip and plug the AC power cord coupler for that receptacle into the AC receptacle.
Step 3 Release the retention clip over the power cord coupler to secure the power cord coupler in the AC receptacle.
Repeat Step 2 and Step 3 for the remaining AC power cords.
Reinstall all power supplies as described in the "Installing the Replacement AC-Input Power Supply" section, and then check the operation of the power supplies in the new power shelf as described in the "Checking the Replacement AC-Input Power Supply" section.
Replace the front cover over the top blower module bay and power shelf.
A Cisco 12016 GSR ordered with the DC-input power subsystem ships with four DC-input power entry modules (full redundant power) installed in the DC-input power shelf.
| Caution A Cisco 12016 GSR equipped with the DC-input power subsystem must be operated with four DC-input power entry modules installed at all times for electromagnetic compatibility (EMC). |
This section provides three procedures:
You need the following items to remove and replace a DC-input power entry module:
Figure 7-17 shows the steps in removing a DC-input power entry module from the power shelf.
To remove a DC-input power entry module, follow these steps:
Step 1 Grasp the outside edges of the upper blower module bay and power shelf front cover and pull it straight out to detach the four ball studs on the front cover from the sockets on the front of the upper blower module bay and power shelf.
Step 2 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 3 To turn off the power entry module and eject it from the shelf backplane connector, follow these steps:
(a) Loosen the ejector lever captive screw to release the ejector lever from the power entry module faceplate. (See Figure 7-17a.)
(b) Pivot the ejector lever away from the power entry module faceplate to eject the power entry module from the power shelf backplane connector. (See Figure 7-17b.)
Step 4 Grasp the power entry module handle and pull the power entry module halfway out of the bay. (See Figure 7-17c.)
Step 5 Use your free hand to support the power entry module while you slide the power entry module completely out of the bay. (See Figure 7-17c.)
Step 6 Set the defective power entry module safely aside.
If you plan to return the defective power entry module to the factory, repackage it in the shipping container you received with the replacement power entry module.
Figure 7-18 shows the steps in installing the replacement DC-input power entry module in the power shelf.
To install a replacement DC-input power entry module, follow these steps:
Step 2 Loosen the ejector lever captive screw on the power entry module and pivot the ejector lever until it is perpendicular to the power entry module faceplate. (See Figure 7-18a.)
| Caution To prevent damaging the power shelf backplane connector, do not use excessive force when inserting a power entry module into its power shelf bay. |
Step 3 Using two hands to support and guide the power entry module, slide it into the power shelf until the connector on the back of the power entry module makes contact with the backplane connector in the power shelf.
Step 4 Seat the power entry module in the backplane connector by pivoting the ejector lever to engage the slot in the floor of the power shelf and then pushing the ejector lever until it is flush with the power entry module faceplate. (See Figure 7-18c.)
Step 5 Tighten the captive screw on the ejector lever.
Step 6 Replace the front cover over the upper blower module bay and power shelf.
Step 7 Verify that the source DC circuit breakers servicing the source DC cables for the power shelf are switched on.
To check the power entry module installation, follow these steps:
Step 1 Verify that each of the following conditions is true:
Step 2 Visually check that the green LED labeled PWR OK goes on and stays on. This LED indicates that the source DC voltage is within the correct range.
If the LEDs labeled PWR OK, FAULT, and TEMP are all off, verify that the following conditions are true:
If the LED labeled FAULT is on, try resetting the circuit breaker on the power entry module faceplate. If the FAULT LED remains on, replace the existing power entry module with a spare power entry module. If the LED labeled PWR OK on the spare power entry module goes on, return the faulty power entry module for replacement.
If the LED labeled FAULT on the spare power entry module remains on, suspect a faulty power shelf backplane connector in that power shelf bay.
If the power entry module fails to operate properly after several attempts to power it up, contact a Cisco service representative for assistance. If the power entry module operates correctly, replace the front cover over the upper blower module bay and power shelf.
The power shelf is a modular sheet-metal enclosure that attaches to the top of the Cisco 12016 GSR chassis and is secured to the chassis at both the front and back of the power shelf. A captive jackscrew under the power shelf extends from the front panel of the power shelf to the back panel. The jackscrew is threaded to fit an insert on the chassis power interface panel. You use the captive jackscrew to unseat the connectors on the back panel of the power shelf from the connectors on the chassis power interface panel and to reseat the power shelf in the connectors when you reinstall the power shelf. Two captive screws on each of the power shelf front flanges fasten the power shelf to the chassis rack-mounting flanges. Guide pins on the power interface panel insert into holes on the back panel of the power shelf to provide support for the back of the power shelf and ensure correct insertion alignment between the connectors on the back panel of the power shelf and the connectors on the chassis power interface panel.
This section contains the following procedures:
You need the following items to remove and replace a DC-input power shelf:
To remove the DC-input power shelf from the chassis, follow these steps:
Step 1 Grasp the outside edges of the front cover over the upper blower module bay and power shelf and pull it straight out to detach the front cover from the ball stud sockets on the front of the upper blower module bay and power shelf.
Step 2 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 3 Remove all four DC-input power entry modules as described in the "Removing a DC-Input Power Entry Module" section.
Step 4 Loosen the screw that secures the source DC power cable cover to the back panel of the power shelf. Slide the cover down to free the screw head from the keyhole slot in the cover. Pull the cover away from the power shelf back panel. (See Figure 7-20.) Set the cover safely aside.
Step 5 Measure the voltages across the leads attached to each of the cable pairs on the back panel of the power shelf. All readings should be zero volts.
Step 6 Disconnect the DC power negative (-) and positive (+) cable pairs from the DC-input terminal studs on the back panel of the power shelf. Use Figure 7-21 as a reference and follow the steps outlined below.
(a) Remove only the outer nut and washer from both terminal studs to which the negative (-) cable lug is connected.
(b) Pull the source DC negative (-) cable lug from the terminals and put it safely aside.
(c) Remove only the outer nut and washer from both terminal studs to which the positive (+) cable lug is connected.
(d) Pull the source DC power positive (+) cable lug away from the terminals and put it safely aside.
(e) Reinstall the washers and outer nuts on the terminal studs.
Repeat Step 6 for each of the source DC power cable pairs (- and +) on the remaining sets of terminal studs for power entry module bays A1, A2, and B2.
Step 7 Remove the outer nut and washer from the two ground terminal studs and remove the power shelf earth ground cable lug from the terminal studs.
Step 8 Loosen the captive screws (two on each side) that fasten the two power shelf front flanges to the rack-mounting flanges on the chassis. (See Figure 7-22.)
Step 9 Use a flat-blade screwdriver to turn the ejector jackscrew on the front panel of the power shelf (see Figure 7-22) counterclockwise to unseat the power shelf connectors from the connectors on the chassis power interface panel.
Step 10 Grasp the front flanges on the power shelf and pull the power shelf halfway out of the rack. (See Figure 7-23.)
Step 11 Grasping the power shelf flanges with both hands (see Figure 7-23), slowly lift the power shelf off the chassis and pull it out of the rack.
Step 12 Set the power shelf safely aside.
If you plan to return the defective power shelf to the factory, repackage it in the shipping container you received with the replacement power shelf.
To install the replacement DC-input power shelf, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Grasp the power shelf front flanges with both hands, lift the power shelf to the top of the chassis, and set the bottom edges of the power shelf sides into the tracks on the top of the chassis. (See Figure 7-24.)
Step 3 Slide the power shelf onto the top of the chassis until the connectors on the power shelf back panel are within approximately three inches of the connectors on the chassis power interface panel.
Step 4 Seat the power shelf in the chassis power interface panel connectors. Use Figure 7-25 as a reference and follow the steps outlined below:
(a) Verify that the guide pins on the chassis power interface panel align with the holes on the back of the power shelf and that the ejector jackscrew aligns with the insert on the chassis power interface panel.
(b) Carefully push the power shelf until the connectors on the back of the power shelf contact the connectors on the chassis power interface panel.
(c) Use a flat-blade screwdriver to turn the ejector jackscrew clockwise to seat the power shelf connectors in the connectors on the chassis power interface panel.
When you cannot turn the ejector jackscrew any farther, the connectors are completely seated and the power shelf front flanges should be against the rack-mounting flanges on the chassis.
Step 5 Insert and tighten the captive screws (two on each side) on each power shelf front flange to secure the power shelf to the chassis flanges. (See Figure 7-22.)
Figure 7-26 shows how to reconnect source DC power cables to the DC-input terminal studs on the back panel of the DC-input power shelf after it has been installed on the Cisco 12016 GSR chassis.
To reconnect source DC to the DC-input power shelf, use Figure 7-26 as a reference and follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Loosen the screw that secures the source DC power cable cover to the back panel of the power shelf. Slide the cover down to free the screw head from the keyhole slot in the cover. Pull the cover away from the power shelf back panel. (See Figure 7-20 earlier in this chapter.) Set the cover safely aside.
Step 3 Remove only the outer nut and washer from each of the terminal studs on the back panel of the power shelf.
 | Warning When installing the source DC power cable leads, always make the ground connection first and disconnect the ground connection last. |
Step 4 Attach the power shelf ground cable. Use Figure 7-26 as a reference and follow these steps:
(a) Position the power shelf ground cable lug on the ground terminal studs.
(b) Install washers and nuts on both terminals and tighten the nuts with your fingers.
(c) Verify that the ground cable lug is on straight and does not interfere with other cables, and then use a 10-mm wrench or nutdriver to tighten the nuts.
Step 5 Install the source DC power shelf cable leads. Use Figure 7-26 as a reference and follow these steps:
(a) For each power cable lead pair, identify the source DC return (positive) and source DC (negative) cable leads.
(b) Select the source DC return (positive) cable lead and fit the holes in the cable lug over the source DC return (positive) terminal studs on the power shelf.
(c) Install and tighten the locking washers and nuts to secure the cable lug.
(d) Select the source DC (negative) cable lead and fit the holes in the cable lug over the source DC (negative) terminal studs on the power shelf.
(e) Install and tighten the locking washers and nuts to secure the cable lug.
Repeat Step 5a through Step 5e for the source DC cable lead pairs for the remaining power entry module bays.
Step 6 Verify that all the terminal stud connections on the power shelf are tight.
Step 7 Switch on the circuit breakers for the four power module circuits and verify that the polarity of the source DC wiring from the source DC breaker to the power shelf is correct.
| Caution The DC-input power entry module contains circuitry to trip the breaker on the power entry module if it detects a reverse polarity condition. No damage should occur due to reverse polarity, but you should correct a reverse polarity condition immediately. |
Step 8 Switch off the circuit breakers for the four power module circuits.
Step 9 Position the power shelf terminal stud cover so that the cable openings are over the cables and the standoff keyhole is over the standoff screw on the power shelf. Slide the cover upward slightly to engage the screw head in the keyhole slot and then secure the cover by tightening the screw.
Reinstall all four power entry modules as described in the "Installing the Replacement DC-Input Power Entry Module" section, and then check the operation of the power entry modules in the new power shelf as described in the "Checking the Replacement of a DC-Input Power Entry Module" section.
| Caution A Cisco 12016 GSR configured for source DC operation must be operated with four DC-input power entry modules installed at all times for electromagnetic compatibility (EMC). |
Replace the front cover over the upper blower module bay and power shelf.
The two blower modules in the Cisco 12016 GSR circulate cooling air through the three card cages in the chassis. The blower modules slide into and out of bays at the top and bottom of the chassis. Each blower module is secured to the chassis with two captive screws on the blower module faceplate.
You need a replacement blower module (Cisco product number GSR16-BLOWER=) and the original blower module front cover to perform this procedure.
To verify that the replacement blower module is operating, follow these steps:
Step 1 Verify that the blower module is inserted all the way into the blower module bay in the chassis, that the two captive screws are tightened, and that the blower module front cover is securely installed on the front of the blower module.
Step 2 Check the blower module LEDs, which are visible through the blower module front cover.
The green LED labeled OK should come on as soon as the blower module is installed and receives power from the chassis backplane.
The red LED labeled FAIL should remain off, indicating that the three fans in the blower module are operating normally.
If the red LED comes on, verify that the blower module is completely inserted into the chassis. Try reseating the blower module.
If the red LED comes on and the blower module is completely inserted into the chassis, the replacement blower module might be faulty or the chassis connector might be damaged. Exchange the upper and lower blower modules to see if the problem is with the blower module or with the chassis connector.
If the blower module fails to operate properly, contact a Cisco service representative for assistance.
Line cards normally occupy slots 0 through 6 in the upper card cage (see Figure 7-27) and slots 8 through 15 in the lower card cage. The master GRP must be installed in slot 7 of the upper card cage. If the system is equipped with an optional, redundant GRP, the redundant GRP must be installed in the far left slot in the lower card cage (slot 8).
This section contains the following subsections:
You will need the following items to remove and replace a line card:
Additional line card information can be found in the respective installation and configuration note for each type of line card. For example, if you are replacing a Quad OC-3c/STM-1c Packet-over-SONET (POS) line card, refer to the installation and configuration note Quad OC-3c/STM-1c Packet-Over-SONET Line Card Installation and Configuration (Publication Number 78-4333-xx), which accompanies every Quad OC-3c/STM-1c POS line card that ships from the factory installed in a new Cisco 12016 GSR or as a field-replaceable unit (FRU).
To remove a line card from the upper card cage, follow these steps:
Step 1 Grasp the outside edges of the upper card cage front cover and pull it straight out to detach the front cover from the ball stud sockets on the front of the upper card cage.
Step 2 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 3 Identify the line card to be replaced and write down the following information:
Step 4 Starting with the bottom port on the line card (on line cards with multiple ports), disconnect the interface cable connectors from each of the line card ports. (See Figure 7-28.)
Step 5 Loosen the captive screw at each end of the line card cable-management bracket and pull the cable-management bracket away from the line card faceplate. (See Figure 7-28.)
Step 6 Loosen the captive screw at each end of the line card faceplate. (See Figure 7-29a.)
Step 7 Place your thumbs on the ejector levers and simultaneously pivot the ejector levers away from each other to unseat the line card from the backplane connector. (See Figure 7-29b.)
Step 8 Grasp both ejector levers and pull the line card halfway out of the slot. Avoid touching the card or any connector pins.
Step 9 Grasp the edge of the line card carrier with one hand and place your other hand under the carrier to support it. (See Figure 7-29c.) Slide the line card out of the slot and place it immediately in an antistatic sack to protect it against ESD and to prevent dust from getting to the fiber-optic connectors on fiber-optic line cards.
If you plan to return the defective line card to the factory, repackage it in the shipping container you received with the replacement GRP.
This section describes how to replace a defective line card in the upper card cage.
To replace a line card in the upper card cage, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Check your notes on the slot assignment and network interface cable information that you wrote down before removing the defective line card.
| Caution Handle line cards by the metal card carrier edges only; avoid touching the board itself or any connector pins. |
Step 3 Remove the line card from its shipping package and antistatic sack.
Step 4 Grasp the front edge of the metal card carrier with one hand and place your other hand under the carrier to support and guide it into the slot alignment grooves.
Step 5 Carefully slide the card carrier into the slot until the ejector levers make contact with the front of the card cage, then stop.
Step 6 Grasp the two card ejector levers and pivot them toward the card faceplate until they are perpendicular to the card faceplate to seat the card in the backplane connector.
Step 7 Tighten the captive screws at each end of the card faceplate to prevent the card from becoming partially dislodged from the backplane and to ensure proper EMI shielding. (These screws must be tightened to meet EMI specifications.)
Repeat Step 2 through Step 7 for any additional line cards, and then proceed to the "Reconnecting Cables to a Line Card in the Upper Card Cage" section.
This section describes how to install an additional line card in the upper card cage.
To install a new line card in the upper card cage, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Identify the card slot for the new line card and remove the blank covering the card slot. Depending on the width of the faceplate on the new line card, you may also need to remove the narrow card filler panel to the right of the card slot.
| Caution Handle line cards by the metal card carrier edges only; avoid touching the board itself or any connector pins. |
Step 3 Remove the new line card from its shipping package and antistatic sack.
Step 4 Grasp the front edge of the metal card carrier with one hand and place your other hand under the carrier to support and guide it into the slot alignment grooves.
Step 5 Carefully slide the card carrier into the slot until the ejector levers make contact with the front of the card cage, then stop.
Step 6 Grasp the two card ejector levers and pivot them toward the card faceplate until they are perpendicular to the card faceplate to seat the card in the backplane connector.
Step 7 Tighten the captive screws at each end of the card faceplate to prevent the card from becoming partially dislodged from the backplane and to ensure proper EMI shielding. (These screws must be tightened to meet EMI specifications.)
Repeat Step 2 through Step 7 for any additional new line cards, and then proceed to the following section, "Attaching a Line Card Cable-Management Bracket."
If you have installed a new line card, you must attach the line card cable-management bracket to the faceplate of the line card before connecting cables to the new line card.
The Cisco 12000 series line cards use cable-management brackets to organize the network interface cables and keep them out of the way, position connectors at their respective ports on the faceplate of the line card, and keep the cables free of sharp bends (excessive bending in a network interface cable can cause performance degradation).
To install the line card cable-management bracket, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the frame.
Step 2 Take the required line card cable-management bracket from the line card shipping carton.
Step 3 Orient the top of the line card cable-management bracket with the top of the line card faceplate. (See Figure 7-30.)
Step 4 Align the two captive screws on the bracket with the threaded inserts near the ejector levers at each end of the line card faceplate.
Step 5 Use your fingers to insert the two captive screws, then use a 3/16-inch flat-blade screwdriver to tighten the two captive screws.
| Caution Do not overtighten the captive screws; you might strip the threads on the screw or in the insert in the line card faceplate. |
Repeat Step 2 through Step 5 for any remaining new line cards.
If you replaced an existing line card in the upper card cage, you must reattach the line card cable-management bracket to the line card faceplate and reconnect the network interface cables to the replacement line card as described below.
If you added a new line card to the upper card cage, you must connect the network interface cables to the line card and route the cables through the chassis cable-management tray and line card cable-management bracket as described in the "Connecting the Line Card Network Interface Cables" section in "Installing a Cisco 12016 GSR."
To reconnect network interface cables to a replacement line card in the upper card cage, use Figure 7-31 as a reference and follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Check your notes on the slot assignment and network interface cable information that you wrote down before removing the defective line card.
Step 3 Orient the line card cable-management bracket so that the top of the bracket (the end where the cables exit to the chassis cable-management tray) is near the top of the line card faceplate.
Step 4 Align the two captive screws in the bracket with the threaded inserts near the ejector levers on the ends of the line card faceplate.
Step 5 Insert and tighten the two captive screws with your fingers, and then use a 3/16-inch flat-blade screwdriver to tighten the two captive screws.
| Caution Do not overtighten the captive screws, because you might strip the threads on the screw or faceplate insert. |
Step 6 Proceeding from the bottom port to the top port (on line cards with multiple ports only), identify the network interface cable for the line card port and insert the cable connector into the line card port.
Repeat Step 6 for the remainder of the interface cables for this line card.
Except for the head-down orientation in the lower card cage (see Figure 7-32), a line card in the lower card cage is removed in exactly the same way as described in the "Removing a Line Card from the Upper Card Cage" section.
Except for the head-down orientation in the lower card cage (see Figure 7-32), a line card is installed in the lower card cage in exactly the same way as described in the "Replacing a Line Card in the Upper Card Cage" section.
If you replaced an existing line card in the lower card cage, you must reconnect the network interface cables to the replacement line card as described below.
If you added a new line card to the lower card cage, you must attach the line card cable-management bracket to the line card as instructed in the "Attaching a Line Card Cable-Management Bracket" section, and then connect the network interface cables as described in the "Connecting the Line Card Network Interface Cables" section in "Installing a Cisco 12016 GSR."
To reconnect network interface cables to a replacement line card in the lower card cage, use Figure 7-33 as a reference and follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Check your notes on the slot assignment and network interface cable information that you wrote down before removing the defective line card.
Step 3 Orient the line card cable-management bracket so that the end of the bracket where the cables exit to the chassis cable-management tray points to the lower chassis cable-management tray.
Step 4 Align the two captive screws in the bracket with the threaded inserts near the ejector levers on the ends of the line card faceplate.
Step 5 Insert and finger-tighten the two captive screws, and then use a 3/16-inch flat-blade screwdriver to tighten the two captive screws.
| Caution Do not overtighten the captive screws, because you might strip the threads on the screw or faceplate insert. |
Step 6 Proceeding from the line card port closest to the alphanumeric LED displays to the port farthest from the alphanumeric LED displays (on line cards with multiple ports only), identify the network interface cable for the line card port and insert the cable connector into the line card port.
Repeat Step 6 for the remainder of the interface cables for this line card.
The GRP must be installed in slot 7 in the upper card cage. (See Figure 7-34.) When the Cisco 12016 GSR is equipped with an optional, redundant GRP, it must be installed in the far left slot in the lower card cage (slot 8).
This section contains the following subsections:
You will need the following items to remove and replace a GRP:
Figure 7-35 shows the steps in removing a GRP from the upper card cage.
| Caution
Before you remove the GRP from the router, back up the running configuration to a Trivial File Transfer Protocol (TFTP) file server or an installed Flash memory card, so you can retrieve it later. If the configuration is not saved, the entire configuration will remain inside the NVRAM on the removed GRP, and you will have to reenter the entire configuration manually on the replacement GRP. If you are removing a GRP temporarily, it is not necessary to back up the running configuration, because lithium batteries on the GRP retain the configuration in memory until you reinstall the GRP in the router. For instructions on copying configuration files to Flash memory, refer to the "Copying System Configuration Files Between GRP Memory and a Flash Memory Card" section in "Observing System Startup and Performing a Basic Configuration." |
To remove the GRP from a slot in the upper card cage, use Figure 7-35 as a reference and follow these steps:
Step 1 Grasp the outside edges of the upper card cage front cover and pull it straight out to detach the front cover from the ball stud sockets on the front of the card cage.
Step 2 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 3 Remove any Flash memory cards from the PCMCIA slots on the GRP and set them safely aside for installation in the new GRP.
Step 4 Disconnect any interface cables attached to the GRP and lay them aside for installation on the new GRP.
Step 5 Loosen the captive screw at each end of the GRP faceplate. (See Figure 7-35a.)
Step 6 Place your thumbs on the ejector levers and simultaneously pivot the ejector levers away from each other to unseat the GRP from the backplane connector. (See Figure 7-35b.)
Step 7 Grasp both ejector levers and pull the GRP halfway out of the slot. Avoid touching the board or any connector pins.
Step 8 Grasp the edge of the GRP card carrier with one hand and place your other hand under the carrier to support it. (See Figure 7-35c.) Slide the GRP out of the slot and place it immediately in an antistatic sack to protect it against ESD.
If you plan to return the defective GRP to the factory, repackage it in the shipping container you received with the replacement GRP.
Figure 7-36 shows the steps in installing a GRP in the upper card cage.
To install the GRP in the upper card cage, use Figure 7-36 as a reference and follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 If the GRP ejector levers are not already in their open position, push both ejector levers away from the GRP faceplate until they are parallel to the GRP faceplate. (See Figure 7-36a.)
Step 3 Grasp the GRP faceplate with one hand and place your other hand under the card carrier to support it while you guide the GRP into the dedicated, far right slot (slot 7). (See Figure 7-36b.)
Step 4 Carefully slide the GRP carrier into the slot until the ejector levers make contact with the front edge of the card cage, then stop.
Step 5 Grasp the two card ejector levers and pivot them toward the GRP faceplate until they are perpendicular to the GRP faceplate to seat the GRP in the backplane connector. (See Figure 7-36c.)
Step 6 Tighten the captive screw at each end of the GRP faceplate to prevent the GRP from becoming partially dislodged from the backplane and to ensure proper EMI shielding. (These screws must be tightened to meet EMI specifications.)
Step 7 Reinstall any GRP interface cables as instructed in the"Connecting the Gigabit Route Processor Cables" section in "Installing a Cisco 12016 GSR."
Step 8 Replace the upper card cage front cover.
Except for the head-down orientation in the lower card cage (see Figure 7-37), a GRP in the lower card cage is removed in exactly the same way as described in the "Removing the GRP from the Upper Card Cage" section.
Except for the head-down orientation in the lower card cage (see Figure 7-37), a GRP is installed in the lower card cage in exactly the same way as described in the "Replacing the GRP in the Upper Card Cage" section.
The Cisco 12016 GSR is equipped with two alarm cards. One card occupies the dedicated far left slot of the upper card cage. A second occupies the dedicated far right slot of the lower card cage. (See Figure 7-38.) In both card cages, the alarm card slot differs from the rest of the card cage slots in that it is labeled as an alarm card slot, is physically narrower, and has a different backplane connector.
This section contains the following subsections:
You will need the following items to perform this procedure:
Figure 7-39 shows the steps in removing an alarm card from the upper card cage.
To remove the alarm card from the upper card cage, use Figure 7-39 as a reference and follow these steps:
Step 1 Grasp the outside edges of the upper card cage front cover and pull it straight out to detach the front cover from the ball stud sockets on the front of the card cage.
Step 2 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 3 Disconnect any external alarm cable attached to the alarm card connector.
Step 4 Loosen the two captive screws at the top and bottom of the alarm card faceplate. (See Figure 7-39a.)
Step 5 Pull on the handle on the alarm card faceplate to unseat the card from the backplane connector.
Step 6 Pull the card half way out of its slot and place your other hand under the carrier to support it. (See Figure 7-39b.) Slide the alarm card out of the card slot and place it immediately on the antistatic mat.
If you plan to return the defective alarm card to the factory, repackage it in the shipping container you received with the replacement alarm card.
Figure 7-40 shows the steps in installing the replacement alarm card in the upper card cage.
To install the replacement alarm card in the upper card cage, use Figure 7-40 as a reference and follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Grasp the handle on the alarm card faceplate with one hand and place your other hand under the card carrier to support the card while guiding it into the card cage slot labeled Alarm card. (See Figure 7-40a.)
Step 3 Carefully slide the alarm card carrier into the slot until it makes contact with the backplane connector, then stop. Avoid touching the card circuitry or any connectors.
Step 4 Carefully push on the top and bottom of the alarm card faceplate to seat it in the backplane connector.
Step 5 Tighten the two captive screws to secure the alarm card in the card slot. (See Figure 7-40b.)
Step 6 Connect any external device cable to the connector on the alarm card faceplate.
Step 7 Replace the upper card cage front cover.
The alarm card in the lower card cage occupies the dedicated far right slot labeled Alarm 1. Except for the head-down orientation in the lower card cage (see Figure 7-41), the alarm card in the lower card cage is removed in exactly the same way as described in the "Removing the Alarm Card from the Upper Card Cage" section.
Except for the head-down orientation in the lower card cage (see Figure 7-41), the alarm card is installed in the lower card cage in exactly the same way as described in the "Replacing the Alarm Card in the Upper Card Cage" section.
| Caution Before attempting to remove and replace a clock and scheduler card, you must power down the router. You can remove and replace a switch fabric card while the router remains powered up. |
Remove a clock and scheduler card or a switch fabric card according to the procedures in the"Removing the Cards from the Switch Fabric Card Cage" section in "Installing a Cisco 12016 GSR."
Install a clock and scheduler card (Cisco product number GSR16/80-CSC=) or a switch fabric card (Cisco product number GSR16/80-SFC=) according to the procedures in the "Reinstalling the Cards in the Switch Fabric Card Cage" section in "Installing a Cisco 12016 GSR."
If you plan to return the defective clock and scheduler card or switch fabric card to the factory, repackage it in the shipping container you received with the replacement card.
There are two basic chassis models of the Cisco 12016 GSR: a five-rail Cisco 12016 chassis and an eight-rail Cisco 12016 chassis. The eight-rail Cisco 12016 chassis will phase out the five-rail Cisco 12016 chassis during the summer of 2000. (For more information about the two chassis, see the "Chassis Overview" section in Chapter 1, "Product Overview.") The same procedure is used to remove and replace either chassis.
The Cisco 12016 GSR chassis is an integrated, sheet metal assembly that includes the upper blower module bay, the upper card cage and air filter door, the fabric card cage, the lower card cage, and the lower blower module bay. The chassis is mounted in a rack by ten screws (five on each side) that fasten the chassis rack-mounting flanges to the mounting flanges on the rack.
This section contains the following subsections:
You need the following items to perform this procedure:
Because you will remove all of the components (except the air filter) from the defective chassis and reinstall them in the replacement chassis during the process of removing the defective chassis, the procedures that follow are based on these guiding assumptions:
This approach has the advantage of protecting the system components such as line cards and switch fabric cards against damage by eliminating the need to store them even temporarily outside their card cages. It also helps ensure that the physical configuration of the GSR is maintained because each transferred component is installed in the same location in the replacement chassis that it occupied in the defective chassis.
When the replacement chassis and scissor-jack platform has been placed near the rack site, temporarily connect the central office grounding system or interior equipment grounding system to the supplemental bonding and grounding receptacles on the GSR. There are two receptacles on the front flanges of the chassis, near the lower corners of the switch fabric card cage (see Figure 7-42) and there are two receptacles on the top of the power interface panel on the back of the chassis (see Figure 7-43). Each bonding and grounding receptacle consists of a round bolt hole and an elongated bolt hole, surrounded by an area of bare metal.
For more information on the bonding and grounding cable and connector requirements, refer to the "Supplemental Unit Bonding and Grounding Guidelines" section in "Preparing for Installation."
This section contains the following procedures:
Power down the GSR as instructed in the "Powering Down the Router" section.
If your system is equipped with either a standard or optional AC-input power shelf, disconnect the AC power cords from the power shelf as instructed in the "Removing the AC-Input Power Shelf from the Chassis" section.
If your system is equipped with a DC-input power shelf, disconnect the source DC cables from the power shelf as instructed in the "Removing the DC-Input Power Shelf from the Chassis" section.
Remove the front covers from the chassis as instructed in the"Removing the Chassis Front Covers" section in "Installing a Cisco 12016 GSR." Set the front covers safely aside. You will install them on the replacement chassis after it has been installed in the equipment rack.
You must disconnect any cables that are connected to the GRP console port, auxiliary port, or either of the Ethernet ports, RJ-45 or MII. Identify each of the GRP cable connections and write them down on a piece of paper before you disconnect the cables. After disconnecting the cables, remove them from the chassis and place them safely aside.
You must disconnect any cable that is connected to the external alarm port on either or both of the alarm cards. Identify the alarm cable connections and write them down on a piece of paper before you disconnect the cables. After disconnecting the cables, remove them from the chassis and place them safely aside.
Disconnect the line card network interface cables from each line card as instructed in the "Removing a Line Card from the Upper Card Cage" section and the "Removing a Line Card from the Lower Card Cage" section.
After you disconnect the cables and the line card cable-management bracket from each card, carefully pull the cables out of the fingers of the horizontal cable tray and vertical cable-management trough, then place the cable bundle carefully out of the way until the cables can be reinstalled on the replacement chassis and reconnected.
One vertical cable-management trough is attached to each side of the chassis by six Phillips screws. (See Figure 7-44.) Both vertical cable-management troughs must be removed from the chassis before the chassis can be removed from the equipment rack.
To remove the vertical cable-management troughs, use Figure 7-44 as a reference and follow these steps:
Step 1 Insert a Phillips screwdriver through the access holes in the outer surface of the trough and remove the six Phillips screws that secure the trough to the chassis.
Step 2 Set the trough and the screws safely aside. You will need to reinstall the trough on the replacement chassis after it has been installed in the equipment rack.
Repeat Step 1 and Step 2 for the remaining trough.
This section contains the following procedures:
Remove both blower modules from the chassis as instructed in the "Removing the Blower Modules" section in "Installing a Cisco 12016 GSR."
As you remove each blower module, transfer the blower module to the same blower module bay in the replacement chassis. Reinstall the blower modules as instructed in the "Reinstalling the Blower Modules" section in "Installing a Cisco 12016 GSR."
If your system is equipped with AC-input power supplies, remove each power supply as instructed in the "Removing an AC-Input Power Supply from the Power Shelf" section. As you remove each power supply, set it safely aside. You will reinstall the power supplies in the power shelf after it has been transferred to the replacement chassis.
If your system is equipped with DC-input power entry modules, remove each power entry module as instructed in the "Removing a DC-Input Power Entry Module" section. As you remove each power entry module, set it safely aside. You will reinstall the power entry modules in the power shelf after it has been transferred to the replacement chassis.
If your system is equipped with an AC-input power shelf, remove the power shelf as instructed in the "Removing the AC-Input Power Shelf from the Chassis" section. After removing the power shelf, transfer it to the replacement chassis and reinstall it as instructed in the "Installing the Replacement AC-Input Power Shelf" section.
If your system is equipped with a DC-input power shelf, remove the power shelf as instructed in the "Removing the DC-Input Power Shelf from the Chassis" section. After removing the power shelf, transfer it to the replacement chassis and reinstall it as instructed in the "Installing the Replacement DC-Input Power Shelf" section.
If your router is equipped with an AC-input power shelf and power supplies, reinstall the power supplies as instructed in the "Reinstalling AC-Input Power Supplies" section in "Installing a Cisco 12016 GSR."
If your router is equipped with a DC-input power shelf and power entry modules, reinstall the power entry modules as instructed in the "Reinstalling DC-Input Power Entry Modules" section in "Installing a Cisco 12016 GSR."
You must remove the GRP, line cards, and alarm card from the upper card cage so that you can install them in the new chassis.
You must remove the line cards and alarm card from the lower card cage so that you can install them in the replacement chassis.
To transfer the clock and scheduler cards and the switch fabric cards from the defective chassis to the replacement chassis, follow these steps.
Step 1 Open the air filter doors on both the defective chassis and the replacement chassis as instructed in the "Removing the Cards from the Switch Fabric Card Cage" section in "Installing a Cisco 12016 GSR."
Step 2 Remove each card from the fabric card cage as instructed in the "Removing the Cards from the Switch Fabric Card Cage" section, and install it immediately in the same slot of the replacement chassis according to the instructions in the "Reinstalling the Cards in the Switch Fabric Card Cage" section.
Step 3 When you have transferred all of the switch fabric cards, close the air filter door on the replacement chassis by swinging it up so that it is flush with the front of the fabric card cage and tighten the four captive screws.
Step 4 Close and secure the air filter door on the defective chassis.
This section contains the following procedures:
If the defective chassis has supplemental bonding and grounding cables attached to any of its bonding and grounding cable receptacles, you must detach these cable lugs from the chassis before you can remove the chassis from the equipment rack. Two receptacles are located on the front flanges of the chassis, near the lower corners of the switch fabric card cage (see Figure 7-42) and two receptacles are located on top of the power interface panel on the back of the chassis (see Figure 7-43).
To detach a bonding and grounding cable lug from the chassis, follow these steps:
Step 1 Remove the two bolts, washers, and nuts that secure the bonding and grounding cable lug to the chassis. Save the mounting hardware, because you will use it in a later procedure.
Step 2 Remove the bonding and grounding cable and set it aside.
Repeat Step 1 and Step 2 for a second bonding and grounding connection (if present).
To remove the chassis from the equipment rack, follow these steps:
Step 1 Position the scissor-jack platform from the original GSR shipping package in front of the rack-mounting platform in the rack. (See Figure 7-45.)
Step 2 Use the 3/4-in (19-mm) socket and ratchet wrench to turn the scissor-jack screw counterclockwise to expand the scissor-jack platform and slowly raise the top of the scissor-jack platform to the same height as the top of the rack-mounting platform. (See Figure 7-45.)
Step 3 Working from the top of the chassis down, remove the screws that secure the chassis to the mounting flanges on the rack (five screws on each side of the chassis). Set the screws aside for use in installing the replacement chassis.
| Caution The chassis is still supported by the rack-mounting platform installed in the bottom of the rack, but should be held to prevent the possibility of tipping out of the front of the rack. |
Step 4 Position one person in front of the chassis to support and guide it while the second person slowly pushes the chassis to slide it off the rack-mounting table, out of the rack, and onto the scissor-jack platform.
Step 5 With one person positioned on the side of the chassis to prevent it from tipping, install the four chassis anchor clips through the slots in the bottom of the chassis, align the holes with the bolt holes in the platform, and insert and tighten the four bolts to prevent the chassis from shifting on the scissor-jack platform. (See Figure 7-46.)
Step 6 With one person positioned on the side of the chassis to prevent it from tipping, use the 3/4-inch (19-mm) socket and ratchet wrench to turn the scissor-jack screw clockwise slowly and close the scissor-jack platform to lower the chassis. (See Figure 7-47.)
Step 7 Position the safety hand truck at one side of the chassis, slide the chassis and scissor-jack platform onto the safety hand truck, and secure the chassis to the hand truck with the locking safety strap.
Step 8 Tilt the safety hand truck onto its outrigger wheels to move the chassis to a level, open space with a solid floor, where the chassis can be repackaged for shipping.
If you plan to return the defective chassis to the factory, repackage it in the original shipping container, or a replacement shipping container acquired from Cisco. For information on repackaging the chassis, refer to the "Repackaging the Replaced Chassis for Shipment" section in "Repackaging the Cisco 12016 GSR."
This section contains the following procedures:
Install the replacement chassis according to the procedures in the "Installing the Chassis in the Rack" section in "Installing a Cisco 12016 GSR."
| Warning Do not attempt to lift the chassis with the handles on the back and sides of the chassis. These handles are not designed to support the weight of the chassis, and should be used only to steady and guide the chassis while it is being inserted into or removed from an equipment rack. To reduce the risk of damage to the chassis and serious bodily injury, do not use these handles to lift or support the chassis. |
If you disconnected any bonding and grounding cables while removing the defective chassis from the equipment rack, reattach the bonding and grounding cable lugs to the bonding and grounding receptacles as instructed in the "Attaching Supplemental Bonding and Grounding Connections" section in "Installing a Cisco 12016 GSR."
Reattach the vertical cable-management troughs to the chassis as instructed in the "Attaching the Vertical Cable-Management Troughs" section in "Installing a Cisco 12016 GSR."
If your router is equipped with either the standard or the optional AC-input power shelf, reconnect AC power to the power shelf as instructed in the "Reconnecting Power to the AC-Input Power Shelf" section.
If your router is equipped with a DC-input power shelf, reconnect DC power to the power shelf as instructed in the "Reconnecting Power to the DC-Input Power Shelf" section.
Reconnect line card network interface cables as instructed in the "Reconnecting Cables to a Line Card in the Upper Card Cage" section and the "Reconnecting Cables to a Line Card in the Lower Card Cage" section.
Reconnect cables to the GRP as instructed in the "Connecting the Gigabit Route Processor Cables" section in "Installing a Cisco 12016 GSR."
Reconnect cables to the alarm cards as instructed in the "Connecting an Alarm Card Cable" section in "Installing a Cisco 12016 GSR."
Follow these steps to restart the GSR and verify that it restarts successfully after replacing the chassis:
Step 1 Verify that the following conditions are true:
Step 2 Ensure that a console terminal is connected to the GRP console port and turned on, or that you have a remote login to the router from another device through a telnet session. (You will need to check the startup banner and displays to ensure that the system restarts properly and that all the interfaces reinitialize in the proper state.)
Step 3 Switch on all source voltage circuit breakers that control power to your system.
Step 4 Observe the power module LEDs:
Step 5 Visually check the two LEDs on the front of each blower module. When the blower module is operating correctly, the green LED labeled OK should be on and the red LED labeled FAIL should be off. Listen for the blowers in the blower modules; you should immediately hear them operating. In a noisy environment, the blowers might be difficult to hear; therefore, place your hand in front of the exhaust vents near the top and bottom rear of the chassis to verify that the blowers are operating.
Step 6 Visually check the LEDs on the two alarm cards. When the system is operating correctly, the following LED conditions should be true:
Step 7 On the console terminal, verify that the console displays the system banner and that the system and all interfaces initialize successfully.
If the power supplies do not power up, or if the system or any interfaces do not initialize properly, refer to the Cisco 12016 Gigabit Switch Router Installation and Configuration Guide that shipped with your router for additional information and installation troubleshooting procedures. If you are still unable to resolve the problem, contact your Cisco service representative for assistance.
Reinstall the chassis front covers as instructed in the "Reinstalling the Chassis Front Covers" section in "Installing a Cisco 12016 GSR."
There are two user-replaceable fuses on the power bus board inside the power interface panel. The fuses are accessed through a removable cover on the back panel of the chassis. (See Figure 7-48.) Both fuses are 2A/125V ceramic fuses. The fuse labeled F1 (see Figure 7-49) protects the MBus controller module; the fuse labeled F2 protects the 5.1 VDC bias voltage for the current monitoring (Imon) signal and the voltage monitoring (Vmon) signals on AC power subsystems.
To replace one of the fuses on the power bus board, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Loosen four captive screws on the power bus board MBus access cover, then remove the access cover and set it safely aside. (See Figure 7-48.)
Step 3 Use a non-conducting fuse extraction tool to pull the fuse out of the fuse holder. (See Figure 7-49.)
Step 4 Using the fuse extraction tool to hold the replacement fuse, align the fuse with the opening in the fuse holder on the power bus board, and press the fuse firmly into the fuse holder.
Step 5 Place the access cover in the opening on the back of the chassis and tighten the four captive screws.
This section describes how to replace or upgrade memory on the GRP and the Cisco 12000 series GRP and line cards.
This section includes information on the following topics:
You will need the following items to install or replace memory on the Cisco 12000 series GRP or line cards:
For a description of the memory types and possible configurations available on the GRP and the Cisco 12000 series line cards, refer to the "Types of Memory" section.
| Caution To prevent system and memory problems when installing DRAM, the DRAM DIMMS must be 3.3V, 60-nanosecond (ns) devices. Do not attempt to install higher-voltage devices in the GRP's DIMM sockets. |
The GRP and the Cisco 12000 series GSR line cards use the following types of memory:
Of the various types of memory used on the GRP and the line cards, only two types of memory are user-configurable (that is, memory that can be upgraded in the field): main or route memory (dynamic random access memory, or DRAM) and packet memory (synchronous dynamic random access memory, or SDRAM).
The following sections describe the user-configurable memory on the GRP and the line cards in greater detail.
The processor on the GRP uses onboard DRAM to perform a variety of important tasks for Cisco 12000 series routers, including the following:
Figure 7-50 shows the locations of the processor memory DRAM DIMM sockets and the Flash memory SIMM socket on the GRP.
The two route memory DIMM sockets on the GRP, labeled U39 (route memory bank 1) and U42 (route memory bank 2), respectively, enable you to configure route memory in desired increments ranging from 128 MB to 256 MB. Table 7-1 lists the available route memory configurations and associated product numbers for the Cisco 12000 series GRP. The default route memory configuration is 128 MB. If the GRP is currently equipped with one 64-MB DIMM in socket U39, you can upgrade memory by installing a second 64-MB DIMM in socket U42, or by removing the existing 64-MB DIMM and replacing it with one 128-MB DIMM.
| Total Route Memory | Cisco Product Number | DIMM Modules | DRAM DIMM Sockets |
128 MB | MEM-DFT-GRP/LC-1281 | 1 128-MB DIMM | U39 |
128 MB | MEM-GRP/LC-64=2 | 2 64-MB DIMM | U39 and U42 |
128 MB | MEM-GRP/LC-128= | 1 128-MB DIMM | U39 |
256 MB | MEM-GRP/LC-256= | 2 128-MB DIMMs | U39 and U42 |
There are two types of user-configurable line card memory:
Line card memory configurations and memory socket locations differ, depending on the type of line card. In general, all line cards share a common set of memory configuration options for processor or route memory, but support different default and maximum configurations for packet memory. For clarity in describing how to perform memory upgrades and replacements in this publication, line cards fall into two groups, group 1 and group 2. Group 1 identifies line cards based on engine 0 or engine 1 packet-forwarding engines; group 2 identifies line cards based on the engine 2 packet-forwarding engine. Group 1 and group 2 line cards can be distinguished by the following physical characteristics:
Figure 7-51 shows the DIMM socket locations on a sample group 1 line card. Group 1 line cards are equipped with six DIMM sockets:
Figure 7-52 shows the DIMM socket locations on a sample group 2 line card. Group 2 line cards are equipped with eight DIMM sockets:
Route memory is line card DRAM that runs the Cisco IOS software image and stores the updated network routing tables downloaded from the GRP. Line card route memory can range from 64 MB to 256 MB. The default route memory configuration for the line card is 64 MB (one 64-MB DIMM in the route memory DRAM DIMM0 socket). Figure 7-51 and Figure 7-52 show the locations of the two DRAM DIMM sockets for group 1 line cards and group 2 line cards, respectively. Table 7-2 lists the available route memory configurations and associated product numbers of DRAM DIMMs for upgrading route memory on the Cisco 12000 series GSR line cards. The default line card route memory configuration is 64 MB.
| Total Route Memory | Cisco Product Number | DIMM Module | Route Memory DIMM Sockets |
64 MB | MEM-DFT-GRP/LC-641 | 1 64-MB DIMM | DIMM0 |
128 MB | MEM-GRP/LC-64= | 2 64-MB DIMMs | DIMM0 and DIMM1 |
128 MB | MEM-GRP/LC-128= | 1 128-MB DIMM | DIMM0 |
256 MB | MEM-GRP/LC-256= | 2 128-MB DIMMs2 | DIMM0 and DIMM1 |
Line card packet memory temporarily stores data packets awaiting switching decisions by the line card processor. Once the line card processor makes the switching decisions, the packets are propagated into the router's switch fabric for transmission to the appropriate line card.
Group 1 line cards (see Figure 7-51) include four SDRAM DIMM sockets for packet buffer memory. These sockets are paired as follows:
Group 2 line cards (see Figure 7-52) include four SDRAM DIMM sockets for buffer memory. These sockets are paired as follows:
Group 2 line cards are also equipped with one SDRAM DIMM socket for PLU memory (see Figure 7-52) and one SDRAM DIMM socket for TLU memory. PLU and TLU memory are not currently user-configurable.
Table 7-3 lists the available packet memory configuration options for upgrading transmit and receive buffer memory on Cisco 12000 series GSR line cards. Cisco packet memory configuration options consist of four DIMMs of the same type and size (two DIMMs for the Rx socket pair and two DIMMs for the Tx socket pair). The actual default and maximum packet memory configuration options depend on the type of line card. Table 7-4 lists the packet memory configuration options for each available Cisco 12000 series GSR line card.
| Total Packet Memory | DIMM Modules | Cisco Product Number1 |
64 MB Rx; 64 MB Tx | Two 32-MB DIMMs Rx; | MEM-DFT-LC-PKT-642 or MEM-DFT-PKT-64 |
128 MB Rx; 128 MB Tx | Two 64-MB DIMMs Rx; | MEM-DFT-PKT-1283 or MEM-LC-PKT-128= |
256 MB Rx; 256 MB Tx | Two 128-MB DIMMs Rx; | MEM-DF-LC1-PKT-256, MEM-LC1-PKT-256=, or MEM-PKT-256= |
| 1Cisco product numbers containing the designators DFT or DF are default configurations installed at the time the card is manufactured. Product numbers ending with an equal sign (=) are options that can be installed on the card in the field. 2For some Cisco 12000 series GSR line cards, the standard (default) packet memory configuration for the transmit and receive buffers is 64 MB. (See Table 7-4.) 3For some Cisco 12000 series GSR line cards, the standard (default) packet memory configuration for the transmit and receive buffers is 128 MB. (See Table 7-4.) |
| Line Card1 | Cisco Product Numbers | Memory Options |
|---|---|---|
Quad OC-3c/STM-1c POS | LC-4OC3/POS-SM | Default is 64 MB; can be upgraded to 128 MB (MEM-LC-PKT-128=). |
OC-12c/STM-4c POS | LC-1OC12/POS-SM | Default is 64 MB; can be upgraded to 128 MB (MEM-LC-PKT-128=). |
OC-12c/STM-4c ATM | LC-1OC12/ATM-SM | Default is 64 MB; can be upgraded to 128 MB (MEM-LC-PKT-128=). |
Channelized OC-12 to DS3 | LC-OC12-DS3 | Default is 64 MB; can be upgraded to 128 MB (MEM-LC-PKT-128=). |
Quad OC-3c/STM-1c ATM | 4OC3/ATM-IR-SC | Default is 64 MB; can be upgraded to 128 MB (MEM-LC-PKT-128=). |
Channelized OC-12/STM-4 IR-SC STS3/STM1 | CHOC12/STS3-IR-SC | Default is 64 MB; can be upgraded to 128 MB (MEM-LC-PKT-128=). |
OC-48c/STM-16c Layer 3 POS | OC48/POS-SR-SC | Default is 64 MB; can be upgraded to 256 MB (MEM-LC1-PKT-256=). |
Quad OC-12c/STM-4c Layer 3 POS | 4OC12/POS-IR-SC | Default is 256 MB; no upgrade option currently available. |
Gigabit Ethernet | GE-SX/LH-SC | Default is 256 MB; no upgrade option currently available. |
| 1The set of line cards supported by the Cisco 12000 GSR frequently increases. Check with your Cisco sales representative to find out the list of currently available line cards. |
This section describes how to replace or upgrade the route memory DRAM DIMMs on the GRP.
This section contains the following procedures:
If you are upgrading the memory by adding a matching DRAM DIMM to an existing single-DIMM configuration (only socket U39 is occupied), use the procedure in the "Installing a New DIMM on the GRP" section. For example, if you want to upgrade memory from 64 MB to 128 MB (two 64-MB DIMMs) or from 128 MB to 256 MB (two 128-MB DIMMs), you can install the appropriate DRAM DIMM in socket U42.
If you are replacing a defective DRAM DIMM or performing a memory upgrade that requires the existing DRAM DIMMs to be removed, you must first remove the existing DIMMs. In that case, use the procedure in the "Removing Route Memory DIMMS from a GRP" section. When you have removed the DIMMs from the GRP, proceed to the "Installing a New DIMM on the GRP" section. For example, if you want to upgrade memory from 64 MB to 128 MB (one 128-MB DIMM) or 256 MB (two 128-MB DIMMs), you must remove the existing DIMMs before installing the new DIMMs.
Remove the GRP from the router as described in the "Removing the GRP from the Upper Card Cage" section.
If you are upgrading the memory by adding a matching DRAM DIMM to an existing single-DIMM configuration (only socket U39 occupied), use the procedure in the "Installing a New DIMM on the GRP" section. For example, if you want to upgrade memory from 64 MB to 128 MB (two 64-MB DIMMs) or from 128 MB to 256 MB (two 128-MB DIMMs), you can install the appropriate DRAM DIMM in socket U42.
If you are replacing a defective DRAM DIMM or performing a memory upgrade that requires the existing DRAM DIMMs to be removed, use the following procedure. For example, if you want to upgrade memory from 64 MB to 128 MB (one 128-MB DIMM) or 256 MB (two 128-MB DIMMs), you must remove the existing DIMM before installing the new DIMMs.
To remove a DIMM from a GRP, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Position the GRP on the antistatic mat so that the faceplate is toward you and the backplane connector is away from you.
Step 3 Locate the route memory DIMMs on the GRP. (See Figure 7-50.) The DIMMs occupy U39 (bank 1) and U42 (bank 2).
Step 4 For the DIMM you want to remove, pull down the lever on the DIMM socket to release the DIMM from the socket. (See Figure 7-53.)
| Caution Handle the edges of the DIMM only. (See Figure 7-54.) Do not touch the integrated circuit devices on the DIMM, the metal traces, or fingers, along the edge of the DIMM, or the pins in the DIMM socket. |
Step 5 When one end of the DIMM is released from the socket, grasp each end of the DIMM with your thumb and forefinger and pull the DIMM completely out of the socket. (See Figure 7-54.)
Step 6 Place the DIMM in an antistatic bag to protect it from ESD damage.
Repeat Step 4 through Step 6 for the remaining DIMM, if required for your upgrade.
This completes the DIMM removal procedure. Proceed to the next section to install the new DIMMs.
This section describes how to install a new DIMM on the GRP.
| Caution To prevent router and memory problems when installing DRAM, the GRP DRAM DIMMS must be 3.3V, 60-ns EDO devices. Do not attempt to install other DRAM devices in the GRP's DIMM sockets. |
To install the new DIMMs, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Place the GRP on an antistatic mat or pad and position the GRP so that the faceplate is toward you and the backplane connector is away from you.
Step 3 Locate the two DRAM DIMM sockets on the GRP, labeled as follows (see Figure 7-50):
Step 4 Remove a new DIMM from the antistatic bag.
Step 5 Hold the DIMM component-side up, with the connector edge (the metal fingers) closest to you. Hold the ends of the DIMM between your thumb and forefinger. (See Figure 7-54.)
Step 6 Tilt the DIMM to the same angle as the socket and insert the entire connector edge into the socket. The two notches (keys) on the bottom edge of the module ensure that the DIMM edge connector is registered properly in the socket. (See Figure 7-54.)
| Caution When inserting DIMMs, use firm but not excessive pressure. If you damage a socket, you will have to return the GRP to the factory for repair. |
Step 7 Gently push the DIMM into the socket until the lever is flush against the side of the DIMM socket and the DIMM's edge connector is fully inserted. (See Figure 7-55.) If necessary, rock the DIMM gently back and forth to seat it properly.
Step 8 When the DIMM is installed, check that the release lever is flush against the side of the DIMM socket. If it is not, the DIMM might not be seated properly. If the DIMM appears to be misaligned, carefully remove it and reseat it in the socket. Push the DIMM firmly back into the socket until the release lever is flush against the side of the DIMM socket.
Repeat Step 4 through Step 8 for the remaining DIMM, as required.
Step 9 Reinstall the GRP in its dedicated slot in the card cage according to the procedure in the "Replacing the GRP in the Upper Card Cage" section.
Step 10 Attach any interface cables to the GRP according to the procedure in the sections "Connecting to the GRP Console Port," "Connecting to the GRP Auxiliary Port," and "Connecting to the Ethernet Port" in "Installing a Cisco 12016 GSR."
Step 11 Restart the router for an installation check.
If the router fails to restart properly after several attempts, contact a Cisco customer service representative for assistance. Before you call, please make note of any error messages, unusual LED states, or any other indications that might help solve the problem.
The Cisco 12000 series GSR line cards use the following types of user-configurable memory:
Both route memory and packet memory can be upgraded in the field. Before beginning the DRAM or SDRAM replacement procedures in this section, ensure that you have the proper tools and equipment at hand, and that you are using appropriate ESD-prevention equipment and techniques. Refer to Table 7-2 for the available DRAM DIMM options or Table 7-4 for the available SDRAM DIMM options that you can use for configuring memory, and observe the following guidelines.
This section contains the following procedures:
Remove a line card from the upper or lower card cages as described in the "Removing and Replacing a Line Card" section.
Line card memory consists of DRAM DIMMs for the line card's processor, as well as SDRAM DIMMs for the line card's transmit and receive buffers. The locations of the DIMM sockets for these two types of line card memory are shown in Figure 7-51 and Figure 7-52.
To remove a DIMM from a line card, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Place the line card on an antistatic mat so that the faceplate is nearest to you.
Step 3 Locate the DIMM sockets on the line card. (See Figure 7-51 and Figure 7-52.)
Step 4 For the DIMM you want to remove, use the socket release levers to eject the DIMM.
Step 5 As one end of the DIMM is released, grasp the top corners of the DIMM with the thumb and forefinger of each hand and pull the DIMM completely out of its socket.
Step 6 Immediately place the module in an antistatic bag to protect it from ESD damage.
Repeat Step 3 through Step 6 for any remaining DIMMs that you want to remove.
Proceed to the following section to install new DIMMs in the line card.
To install new DRAM or SDRAM DIMMs in a Cisco 12000 series GSR line card, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Place the line card on an antistatic mat so that the faceplate is nearest to you.
| Caution To prevent router and memory problems, all DIMMs installed in the line card must be 3.3-volt, 60-nanosecond devices. Do not attempt to install other devices in the DIMM sockets. |
Step 3 Remove the new DIMM from its protective antistatic bag.
Step 4 Grasp the edges of the DIMM only. (See Figure 7-54.) Do not touch the integrated circuit devices on the DIMM, the metal traces, or fingers, along the edge of the DIMM, or the pins in the DIMM socket.
Step 5 To position the DIMM for insertion, orient it at the same angle as the DIMM socket. The two notches (keys) on the bottom edge of the module ensure that the DIMM edge connector is registered properly in the socket.
If necessary, rock the DIMM back and forth gently to align it in the socket.
| Caution When inserting DIMMs into a socket, apply firm, but not excessive, pressure. If you damage a DIMM socket, you must return the line card to the supplier for repair. |
Step 6 Gently insert the DIMM into the socket and push until the DIMM snaps into place and the release lever is flush against the side of the socket. (See Figure 7-55).
Step 7 Verify that the release lever is flush against the side of the socket. If it is not, the DIMM might not be seated properly. On a socket with dual release levers, both levers should be flush against the sides of the DIMM.
If the module appears misaligned, carefully remove it and reseat it, ensuring that the release lever is flush against the side of the DIMM socket.
Repeat Step 3 through Step 7 for any remaining DIMMs that you want to insert for your memory configuration, then proceed to Step 8.
Step 8 Reinstall the line card in the card cage and attach any interface cables to the line card.
If the line card is installed in the upper card cage, refer to the "Replacing a Line Card in the Upper Card Cage" section and the "Reconnecting Cables to a Line Card in the Upper Card Cage" section.
If the line card is installed in the lower card cage, refer to the "Replacing a Line Card in the Lower Card Cage" section and the "Reconnecting Cables to a Line Card in the Lower Card Cage" section.
If the line card does not reinitialize properly after upgrading DRAM or SDRAM on the line card, or if the console terminal displays a checksum or memory error, verify that you have installed the correct DRAM or SDRAM DIMMs and that they are installed correctly on the line card.
Follow these steps:
Step 1 Remove the line card from the card cage as previously described.
Step 2 Check the packet buffer memory SDRAM DIMMs to verify that both DIMMs are the same size and speed.
If you have upgraded line card packet buffer memory, both DIMM sockets of a given pair of transmit (Tx) or receive (Rx) buffers must contain SDRAM DIMMs of the same size and speed; otherwise, the router will not operate properly. SDRAM DIMMs must operate at 60 ns or faster. The speed of the DIMM is printed along one of its edges.
Step 3 Check the alignment of the DRAM and SDRAM DIMMs by looking at them across the horizontal plane of the card. The DIMMs should be aligned at the same angle and be fully inserted into their respective sockets.
If a DIMM is not correctly aligned, remove it and reinsert it.
Step 4 Reinstall the line card in the card cage as described earlier in this chapter and perform another installation check.
If the router fails to restart properly after several attempts and you are unable to resolve the problem, contact your Cisco service representative for assistance. Before calling, however, please make note of any console error messages, unusual LED states, or other system indications or behaviors that might help to resolve the problem.
Posted: Mon Jun 5 13:57:15 PDT 2000
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