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After your Cisco 12008 has been operational for a period of time, you might need to perform specific maintenance tasks, replace certain field replaceable units (FRUs), upgrade memory components, or perform other tasks to ensure that the router continues to operate properly and reliably.
This chapter includes the following sections:
 | Caution Before performing any of the procedures in this chapter, review the section entitled "Safety Recommendations" in Chapter 2 to prevent problems, damage to equipment, or injury to personnel. |
The Cisco 12008 has a removable air filter assembly that forms part of the outer enclosure of the lower card cage (see Figure 7-1). This card cage accommodates a fan tray containing six fans that provide cooling air for all of the router's internal electronic circuitry, including all of the cards installed in the upper card cage slots and the optional set of three SFCs that you can install in the lower card cage slots.
The air filter assembly removes dust and particulate matter from the ambient air being drawn into the router by the card cage fan tray. Once a month (or more often in dusty environments) you should examine the air filter and replace it if it is dirty. You can clean or replace the air filter while the Cisco 12008 remains powered up and fully operational.
A new air filter (product number ACS-GSR8-FLTR=) is the only part that you will need if you decide that the old filter needs replacing.
To service the air filter, you need only remove the plastic bezel to gain access to the filter proper (see Figure 7-1). A vacuum cleaner is the only tool you need to perform air filter maintenance.
The closure for the lower card cage is designed in a way that permits you to detach the plastic bezel and the air filter without removing the underlying EMI frame. Thus, you can perform filter maintenance without disrupting the EMI integrity of the router enclosure.
The EMI frame, which contains a honeycomb screen for EMI suppression, should remain in place at all times during normal router use to ensure EMI compliance. However, this frame can be removed at any time should it become necessary to access the components in the lower card cage. The EMI frame is secured to the router by means of two panel fasteners (see Figure 7-1).
To remove or replace the air filter, perform the following steps:
Step 1 Using both hands, exert upward pressure on the two lower spring clips (see Figure 7-1) to disengage them from the body of the bezel; swing the bezel upward to release it from the upper spring clips. Set the bezel aside temporarily.
Step 2 Inspect the condition of the air filter and decide if it should be removed and cleaned.
Step 3 To remove the filter, slide it off the two panel fasteners (see Figure 7-1).
| Caution Exercise care to prevent damage to the honeycomb screen in the EMI frame. Damage to the honeycomb screen might reduce its EMI suppression characteristics and restrict the flow of cooling air through the router. |
Step 4 Vacuum both sides of the filter thoroughly.
If the filter is damaged or cannot be adequately cleaned, discard it and replace it with a new one.
Step 5 As appropriate, reinstall the old filter or install the new filter in the EMI frame; grasp the filter by its sides, position it for insertion over the two panel fasteners, and seat it against the EMI frame.
Step 6 Grasp the plastic bezel by its sides; position the two slots in the lower surface of the bezel over the two lower spring clips of the EMI frame.
Step 7 Rotate the bezel upward, making sure that the two slots in the upper surface of the bezel are properly aligned with the two spring clips at the top of the EMI frame.
Step 8 Exert inward pressure on the bezel to snap it firmly into place.
The Cisco 12008 must be fully enclosed to ensure that cooling air is circulated properly throughout the interior of the router. Fully enclosing the router prevents overheating of electronic components in the upper and lower card cages and suppresses EMI radiation.
To cover any vacant slot in the upper card cage of the Cisco 12008, you must install a blank filler panel (see Figure 7-2).
To install a blank filler panel, perform the following steps:
Step 1 Grasp the filler panel and position it vertically for insertion into the vacant slot.
Step 2 Slide the filler panel into the slot until its faceplate is flush against the top and bottom of the card cage.
Step 3 Tighten the captive installation screws on the faceplate of the filler panel to secure it in place.
If you need to install a circuit board in place of the blank filler panel, remove the panel by performing the reverse of the procedure outlined above.
The Cisco 12008 can operate with either one or two AC-input power supplies. Although the router supports an online insertion and removal (OIR) capability for field replaceable units (FRUs), you must observe the following rules regarding the AC-input power supplies:
You need the following to add, remove, or replace an AC-input power supply:
| Caution You cannot use an AC-input power supply and a DC-input power supply in the same chassis. |
In the following procedure, it is assumed that you will be adding a second AC-input power supply to the router. In this case, it is also assumed that a blank filler panel has previously been installed in the vacant power supply bay.
To add a second (redundant) AC-input power supply to the router, perform the following steps:
Step 1 Locate the source AC circuit breaker that will service the AC-input power supply; ensure that this circuit breaker is set to the OFF position.
For added safety, tape the circuit breaker handle in the OFF position.
Step 2 Using a 1/4-inch flat-blade screwdriver, loosen the captive installation screw on the blank filler panel covering the vacant (upper) power supply bay; remove the filler panel and retain it for possible future use.
Presumably, you will install the new power supply in the upper power supply bay, since, by convention, a single AC-input power supply is installed in the lower bay.
Step 3 Ensure that the rotary power switch on the faceplate of the new power supply that you intend to install is set to the standby (OFF) position (see Figure 7-3).
Step 4 Grasp the carrying handle on the new power supply with one hand; while lifting the power supply, place your free hand beneath the unit to support its weight.
 | Warning The AC-input power supply weighs 17 lb (7.73 kg). For safety, use both hands to install the unit in the power supply bay. |
Step 5 Position the power supply appropriately for insertion into the vacant upper bay.
Step 6 Gently slide the unit into the bay, carefully seating it so that the power supply faceplate rests flush against the sheet metal of the power supply bay.
| Caution To prevent damage to the blind-mating connector at the rear of the power supply, do not use excessive speed or force when inserting the power supply into the bay. |
Step 7 Using a 1/4-inch flat-blade screwdriver, tighten the captive installation screw on the faceplate of the power supply (see Figure 7-3).
Step 8 Connect the source AC power cord to the AC receptacle on the power supply faceplate (see Figure 7-4a). Secure the bail latch over the source AC power cord (see Figure 7-4b).
Step 9 Connect the other end of the source AC power cord to its power source (see Figure 7-4c).
Step 10 Set the rotary power switch on the new AC-input power supply to the ON (1) position.
To verify that the new AC-input power supply is operating properly, proceed to the section entitled "Verifying the Installation of an AC-Input Power Supply."
For the following procedure, it is assumed that you will remove an AC-input power supply from a Cisco 12008 that is equipped with a single such unit. In this case, you must power down the router before removing the power supply.
It is also assumed that the power supply to be removed is installed in the lower power supply bay, which, by convention, is the normal configuration for a single power supply. Lastly, in such a single power supply configuration, it is assumed that the upper power supply bay has been previously covered by a blank filler panel to ensure EMI compliance and the proper flow of cooling air through the router.
To remove the AC-input power supply from the router, perform the following steps:
Step 1 Set the rotary power switch on the power supply faceplate to the standby (OFF) position.
Step 2 Locate and turn off the source AC circuit breaker that is currently servicing the AC-input power supply.
Step 3 Tape the circuit breaker handle in the OFF position as an added safety precaution.
Step 4 Release the bail latch that secures the source AC power cord to the AC receptacle on the power supply faceplate.
Step 5 Disconnect the source AC power cord from the AC receptacle.
Step 6 Using a flat-blade screwdriver, loosen the captive installation screw on the power supply faceplate that secures the power supply in the bay.
Step 7 With one hand, grasp the power supply carrying handle and pull the unit halfway out of the bay to disengage the female blind-mating connector at the back of the power supply from the backplane.
| Warning The AC-input power supply weighs 17 lb (7.73 kg). For safety, use both hands to remove the unit from the power supply bay. |
Step 8 Place your free hand beneath the power supply to support its weight and withdraw the unit completely from the bay.
Step 9 Set the power supply aside, pending further disposition.
If you intend to return the removed power supply to the factory for repair or replacement, repackage the unit properly for return shipment using the original packing materials, if available.
In the following procedure, it is assumed that you will replace an existing power supply in a router that is configured with two (redundant) AC-input power supplies.
In this configuration, the router's online insertion and removal (OIR) capability enables you to replace one of the power supplies without removing power from the other. Thus, the router can remain fully operational during the power supply replacement procedure.
To replace one of the AC-input power supplies in a redundant power supply configuration, perform the following steps:
Step 1 On the power supply to be replaced, set the rotary power switch to the standby (OFF) position.
Step 2 Locate and turn off the source AC circuit breaker that is currently servicing the AC-input power supply.
Step 3 Tape the circuit breaker handle in the OFF position as an added safety precaution.
Step 4 Using a 1/4-inch flat-blade screwdriver, loosen the captive installation screw on the power supply faceplate.
Step 5 Release the bail latch that secures the source AC power cord to the AC receptacle on the power supply faceplate.
Step 6 Remove the power cord from the AC receptacle.
Step 7 Grasp the power supply carrying handle with one hand and pull the unit halfway out of the bay to disengage the blind-mating connector at the back of the power supply from the backplane.
| Warning The AC-input power supply weighs 17 lb (7.73 kg). For safety, use both hands to withdraw the unit from the bay. |
Step 8 Place your free hand beneath the power supply to support its weight and withdraw the unit completely from the bay.
Step 9 Pending further action, set the unit aside.
If you intend to return the removed power supply to the factory for repair or replacement, repackage the unit properly for return shipment using the original packing materials, if available.
Step 10 On the new AC-input power supply that you intend to install in the now vacant bay, set the rotary power switch on the new power supply to the standby (OFF) position.
Step 11 Grasp the carrying handle on the power supply with one hand; place your free hand beneath the unit to support its weight.
Step 12 Position the unit appropriately for insertion into the power supply bay.
Step 13 Gently slide the new power supply into the bay, carefully seating it so that the power supply faceplate is flush against the sheet metal of the power supply bay. Doing so ensures that the blind-mating connector at the rear of the power supply is firmly seated in the backplane connector.
| Caution To prevent damage to the blind-mating connectors, do not use excessive speed or force when inserting the new power supply into the bay. |
Step 14 Using a 1/4-inch flat-blade screwdriver, tighten the captive installation screw on the power supply faceplate.
Step 15 Connect the source AC power cord to the AC receptacle on the power supply faceplate.
Step 16 Secure the bail latch over the source AC power cord to secure it in the AC receptacle.
Step 17 Set the rotary power switch on the new AC-input power supply to the ON (|) position.
To verify that the new power supply is operating properly, perform the procedure in the following section.
To verify the operation of a newly-installed AC-input power supply, first apply power to the unit and then observe the status of the LEDs on the power supply faceplate.
To verify the operation of a newly-installed AC-input power supply, perform the following steps:
Step 1 First, verify that the following conditions have been satisfied:
Step 2 Set the rotary power switch on the newly-installed power supply to the ON position.
Step 3 Observe the behavior of the green AC INPUT OK LED on the power supply faceplate for the following conditions:
(a) The source AC circuit breaker is on.
(b) The source AC power cord is securely connected from the source AC circuit breaker to the AC receptacle on the power supply faceplate.
Step 4 Observe the behavior of the red OUTPUT FAIL LED on the power supply faceplate after you apply power to the unit. This LED should flash on momentarily, then go off and remain so.
If the new AC-input power supply fails to operate properly after several attempts to power it up as described above, contact your Cisco service representative for assistance.
The Cisco 12008 can operate with either one or two DC-input power supplies. Although the router supports an online insertion and removal (OIR) capability for field replaceable units (FRUs), you must observe the following rules regarding the DC-input power supplies:
To add, remove, or replace a DC-input power supply, you need the following tools:
The replacement DC-input power supply (product number PWR-GSR8-DC=) is the only part that you will need during the following procedures.
| Caution You cannot use an AC-input power supply and a DC-input power supply in the same chassis. |
In the following procedure, it is assumed that you will be adding a second DC-input power supply to the router. It is also assumed that a blank filler panel is installed in the vacant power supply bay.
| Warning Before attempting to install a redundant DC-input power supply, you must have a second, independent DC power source available to service the unit. |
To install a second (redundant) DC-input power supply, you must first satisfy the following requirements:
| Caution AC-input and DC-input power supplies cannot be used together in the same router. Such a configuration is not supported and may damage the system. |
To add a second (redundant) DC-input power supply to the router, perform the following steps:
Step 1 Locate the source DC circuit breaker that will service the DC-input power supply; ensure that this circuit breaker is set to the OFF position. For added safety, tape the circuit breaker handle in the OFF position.
| Warning To be completely sure that power has been removed from the source DC circuit that will be used to service the new power supply, use a voltmeter to measure the voltage across the negative (-) and positive (+) source DC leads to be connected to the power supply. Set the voltmeter to a range that makes it capable of measuring up to 75 VDC. The measurement across the positive and negative leads should be zero (0) volts. |
Step 2 Using a 1/4-inch flat-blade screwdriver, loosen the captive installation screw on the blank filler panel covering the vacant (upper) power supply bay; remove the filler panel and retain it for possible future use.
Presumably, you will be installing the new power supply in the upper power supply bay, since, by convention, a single DC-input power supply is installed in the lower bay.
Step 3 Ensure that the rotary power switch on the faceplate of the new power supply that you will be installing is set to the OFF (O) position.
Step 4 Grasp the carrying handle on the new power supply with your left hand; while lifting the power supply, place your right hand beneath the unit to support its weight.
| Warning The DC-input power supply weighs 14 lb (6.36 kg). For safety, use both hands to install the unit in the power supply bay. |
Step 5 Position the power supply appropriately for insertion into the vacant upper bay.
Step 6 Gently slide the unit into the bay, carefully seating it so that the power supply faceplate rests flush against the sheet metal of the power supply bay.
| Caution To prevent damage to the blind-mating connector at the rear of the power supply, do not use excessive speed or force when inserting the power supply into the bay. |
Step 7 Using a 1/4-inch flat-blade screwdriver, tighten the captive installation screw on the power supply faceplate (see Figure 7-6).
Step 8 Remove the plastic safety shield (see Figure 7-7) that covers the alarm terminal block and the positive (+) and negative (-) terminals on the power supply faceplate.
To remove the plastic safety shield, take the following actions:
(a) Loosen the knurled thumbwheel on the bottom left standoff that secures the safety shield to the power supply faceplate.
(b) Grasp the safety shield and move it to the right and obliquely upward, positioning the shield so that it can be freed from the three standoffs on the power supply faceplate.
(c) Remove the shield from the standoffs and set it aside temporarily.
Step 9 Unscrew the loosely mounted lockwashers and nuts from all six terminals on the power supply faceplate; set this hardware aside temporarily.
Step 10 As an added safety precaution, it is recommended that you add a length of shrink tubing to the crimp area on each power cable lug (see Figure 7-5) before connecting the leads to the power supply.
The shrink tubing acts as an insulator to prevent the crimp area on the source DC power cable lugs from coming in contact with the faceplate of the DC-input power supply.
Step 11 Connect the source DC power leads to the terminals on the power supply faceplate. In so doing, strictly observe the following order in connecting the leads to the power supply:
(a) Ground
(b) + (positive)
(c) - (negative)
Step 12 Using the lockwashers and nuts removed from the terminals in Step 9, connect each power supply cable to the appropriate terminals on the power supply faceplate.
Observe the order shown in Figure 7-8 in connecting the source DC power cables to the terminals on the power supply.
Step 13 After installing each cable, securely tighten the associated lockwashers and nuts on the power supply terminals using a 10 mm nutdriver (or a 1/4-inch socket wrench with a 10 mm deep-well socket).
| Caution Do not overtighten the nuts on the power supply terminals. |
Step 14 If you intend to attach an external alarm monitoring facility to the alarm terminal block on the power supply, connect the leads from the external monitoring facility to the circuit breaker alarm terminal block. Figure 7-9 shows an example of how these leads can be connected.
The functions and uses of the circuit breaker alarm terminal block are described in detail in the subsection entitled "Circuit Breaker Alarm Terminal Block" in Chapter 1.
Step 15 Reinstall the plastic safety shield (see Figure 7-7) on the power supply faceplate by taking the following actions:
(a) Seat the shield over the standoffs on the power supply faceplate.
(b) Move the shield to the left and obliquely downward so that it registers properly on the three standoffs on the power supply faceplate.
(c) Tighten the knurled thumbscrew on the bottom left standoff to secure the shield to the power supply faceplate.
Step 16 Remove the tape from the main circuit breaker supplying source power to the new power supply (see Step 1).
Step 17 Set the circuit breaker to the ON position.
Step 18 Set the rotary power switch on the new DC-input power supply to the ON (|) position.
To verify that the new DC-input power supply is operating properly, proceed to the section below entitled "Verifying the Installation of a DC-Input Power Supply."
For the following procedure, it is assumed that you will be removing a DC-input power supply from a Cisco 12008 router that is equipped with a single such unit. In this case, you must power down the router before removing the power supply.
It is assumed further that the power supply to be removed is installed in the lower power supply bay, which, by convention, is the recommended bay for installing a single power supply.
To remove the DC-input power supply from the router, perform the following steps:
Step 1 Set the rotary power switch on the power supply faceplate to the OFF (O) position.
Step 2 Locate and turn off the source DC circuit breaker that is servicing the DC-input power supply.
Step 3 Tape the circuit breaker handle in the OFF position as an added safety precaution.
Step 4 Remove the plastic safety shield (see Figure 7-7) that covers the alarm terminal block and the positive (+) and negative (-) terminals on the power supply faceplate.
To remove the plastic safety shield (see Figure 7-7), take the following actions:
(a) Loosen the knurled thumbwheel on the bottom left standoff that secures the safety shield to the power supply faceplate.
(b) Grasp the safety shield and move it to the right and obliquely upward, positioning the shield so that it can be freed from the three standoffs on the power supply faceplate.
(c) Remove the shield from the standoffs and set it aside temporarily.
| Warning To be completely sure that power has been removed from the source DC circuit that is presently servicing the power supply, use a voltmeter to measure the voltage across the negative (-) and positive (+) source DC leads on the power supply. Set the voltmeter to a range that makes it capable of measuring up to 75 VDC. The measurement across the positive and negative leads should be zero (0) volts. |
Step 5 Before removing the power cables, write the name of each cable on a piece of tape, as follows:
Step 6 Attach each piece of tape to the appropriate cable to identify it for later reconnection.
Step 7 Remove the power cables from the power supply terminals; strictly observe the following order in removing the cables:
(a) - (negative)
(b) + positive)
(c) Ground
Step 8 Using a 10 mm nutdriver (or a 1/4-inch socket wrench with a 10 mm deep-well socket) loosen the nuts securing the negative (-) power cable to the bottom terminals on the power supply faceplate; remove the nuts and locking washers from the terminals and set this hardware aside temporarily.
Step 9 Proceed in like manner to remove the remaining power cables from the positive (+) terminals and the grounding terminals, making sure that you remove the earth ground cable last.
Step 10 For added safety, place tape over the exposed lugs of the power cables to prevent contact between the leads.
Step 11 If leads are attached to the circuit breaker alarm terminal block on the power supply faceplate (see Figure 7-9), make a note of how these leads are connected so that they can be properly reconnected later.
Step 12 Using a 1/4-inch flat-blade screwdriver, loosen the captive installation screw on the power supply faceplate (see Figure 7-6).
Step 13 Grasp the power supply carrying handle with your left hand and pull the unit halfway out of the bay to disengage the blind-mating connector at the back of the power supply from the backplane.
| Warning The DC-input power supply weighs 14 lb (6.36 kg). For safety, use both hands to remove the unit from the power supply bay. |
Step 14 Place your right hand beneath the power supply to support its weight; withdraw the unit completely from the bay.
Step 15 Set the power supply aside in a safe place, pending further disposition.
If you intend to return the removed power supply to the factory for repair or replacement, repackage the unit properly for return shipment using the original packing materials, if available.
In the following procedure, it is assumed that you will be replacing an existing power supply in a router containing redundant DC-input power supplies. In this configuration, the router's online insertion and removal (OIR) capability enables you to replace a given power supply without removing power from the router.
To replace a power supply in a redundant DC-input power supply configuration, perform the following steps:
Step 1 Set the rotary power switch on the faceplate of the power supply to be removed to the OFF (O) position.
Step 2 Locate and turn off the source DC circuit breaker that is currently servicing the DC-input power supply.
Step 3 Tape the circuit breaker handle in the OFF position as an additional safety precaution.
Step 4 Remove the plastic safety shield (see Figure 7-7) that covers the alarm terminal block and the positive (+) and negative (-) terminals on the power supply faceplate.
To remove the plastic safety shield, take the following actions:
(a) Loosen the knurled thumbwheel on the bottom left standoff that secures the safety shield to the power supply faceplate.
(b) Grasp the safety shield and move it to the right and obliquely upward, positioning the shield so that it can be freed from the three standoffs on the power supply faceplate.
(c) Remove the shield from the standoffs and set it aside temporarily.
| Warning To be completely sure that power has been removed from the source DC circuit presently servicing the power supply that you intend to remove, use a voltmeter to measure the voltage across the negative (-) and positive (+) source DC leads. Set the voltmeter to a range that makes it capable of measuring up to 75 VDC. The measurement across the positive and negative leads should be zero (0) volts. |
Step 5 Before removing the power cables, write the name of each cable on a piece of tape, as follows:
Step 6 Attach each piece of tape to the appropriate cable to identify it for later reconnection.
Step 7 Remove the power cables from the power supply terminals, strictly observing the following order of removal:
(a) - (negative)
(b) + (positive)
(c) Ground
Step 8 Using a 10 mm nutdriver (or a 1/4-inch socket wrench with a 10 mm deep-well socket), loosen the nuts securing the negative (-) power cable to the bottom terminals on the power supply faceplate; remove the nuts and locking washers from the terminals; set this hardware aside temporarily and remove the power cable from the negative terminals.
Step 9 Proceed in like manner to remove the positive (+) and grounding cables from the power supply terminals, making sure that you remove the ground cable last.
Step 10 For added safety, place tape over the exposed lugs of the power cables to prevent contact between the leads.
Step 11 If an external alarm monitoring facility is attached to the circuit breaker alarm terminal block on the power supply faceplate (see Figure 7-9), make a note of how the leads are connected. Doing so enables you to properly identify each lead for later reconnection.
Step 12 Disconnect the leads from the circuit breaker alarm terminal block.
Step 13 Using a 1/4-inch flat-blade screwdriver, loosen the captive installation screw on the power supply faceplate (see Figure 7-6).
Step 14 Grasp the power supply carrying handle with your left hand and pull the unit halfway out of the bay to disengage the blind-mating connector at the back of the power supply from the backplane.
| Warning The DC-input power supply weighs 14 lb (6.36 kg). For safety, use both hands to withdraw the unit from the bay. |
Step 15 Place your right hand beneath the power supply to support its weight and completely withdraw the unit from the bay.
Step 16 Pending further action, set the unit aside in a safe place.
If you intend to return the removed power supply to the factory for repair or replacement, restore the nuts and lock washers to the power supply terminals, and reinstall the plastic safety shield (see Figure 7-7) on the faceplate standoffs. Repackage the unit properly for return shipment using the original packing materials, if available.
Step 17 On the new DC-input power supply that you intend to install in the now vacant power supply bay, set the rotary power switch on the power supply faceplate to the OFF (0) position.
Step 18 Grasp the carrying handle on the power supply with one hand; place your free hand beneath the unit to support its weight.
Step 19 Position the unit appropriately for insertion into the power supply bay.
Step 20 Gently slide the new power supply into the vacant bay, carefully seating it so that the power supply faceplate is flush against the sheet metal of the power supply bay. This action ensures that the blind-mating connector at the rear of the power supply is firmly seated into the backplane connector.
| Caution To prevent damage to the blind-mating connectors, do not use excessive speed or force when inserting the new power supply into the bay. |
Step 21 Using a 1/4-inch flat-blade screwdriver, tighten the captive installation screw on the power supply faceplate.
Step 22 Remove the plastic safety shield (see Figure 7-7) from the new power supply, taking the same actions as specified in Step 4 above.
| Warning To be completely sure that power has been removed from the source DC circuit that you intend to reconnect to the new power supply, use a voltmeter to measure the voltage across the negative (-) and positive (+) source DC leads. Set the voltmeter to a range that makes it capable of measuring up to 75 VDC. The measurement across the negative and positive leads should be zero (0) volts. |
Step 23 Unscrew the loosely mounted lockwashers and nuts from all six terminals on the new power supply faceplate; set this hardware aside temporarily.
Step 24 Before connecting each cable to the appropriate terminals on the power supply faceplate, remove the tape (that you applied in Step 10 above) from the lug. Strictly observe the following order in reconnecting the leads to the power supply terminals:
(a) Ground
(b) + (positive)
(c) - (negative)
Step 25 Secure each cable to the terminals using the previously removed lockwashers and nuts. Tighten the lockwashers and nuts on each terminal using a 10 mm nutdriver (or a 1/4-inch socket wrench with a 10 mm deep-well socket).
| Caution Do not overtighten the nuts on the power supply terminals. |
Step 26 If you intend to reconnect the external alarm monitoring facility to the circuit breaker alarm terminal block on the new power supply, reconnect the leads as they were on the old power supply (see Step 11).
Step 27 Remove the tape securing the main source DC circuit breaker in the OFF (0) position (see Step 3).
Step 28 Set the main source DC circuit breaker to the ON (1) position.
Step 29 Set the rotary power switch on the new DC-input power supply to the ON (|) position.
To verify that the new DC-input power supply is operating properly, perform the procedure in the following section.
To verify the operation of a newly-installed DC-input power supply, first apply power to the unit and observe the status of the LEDs on the power supply faceplate.
To verify the operation of a newly-installed DC-input power supply, perform the following steps:
Step 1 First, verify that the following conditions are satisfied:
Step 2 Assuming that you have not already done so, set the rotary power switch of the newly installed power supply to the ON position.
Step 3 Observe the behavior of the green INPUT OK LED on the power supply faceplate for the following conditions:
(a) The main source DC circuit breaker is on.
(b) The source DC power cables are connected properly to the terminals on the power supply faceplate.
Step 4 Observe the behavior of the red OUTPUT FAIL LED on the power supply faceplate after applying power to the unit. This LED should flash on momentarily, then go off and remain so.
If the new DC-input power supply fails to operate properly after several attempts to power it up as described above, contact your Cisco service representative for assistance.
This section presents the procedures for removing and installing the following fan trays incorporated into the Cisco 12008:
The Cisco 12008 supports online insertion and removal of field-replaceable units (FRUs); thus, you can remove and replace a fan tray while the rest of the system remains powered up and fully operational.
You will need the following tools and parts to remove or install a fan tray:
To remove the fan tray from the lower card cage, perform the following steps.
Step 1 Loosen the two panel fastener screws on each side of the air filter assembly (see Figure 7-10); remove the assembly to expose the interior of the lower card cage and set it aside.
Step 2 Loosen the two captive installation screws at the sides of the fan tray.
Step 3 With one hand, grasp the ring-shaped insertion/extraction tab in the middle of the fan tray carrier; gently slide the fan tray halfway out of the guide rails to disengage the fan tray connector from the backplane (see Figure 7-10).
Step 4 Place your free hand beneath the fan tray to support its weight and slide the module completely out of the card cage.
Step 5 Set the fan tray aside.
| Caution The card cage fan tray weighs approximately 12 lb (5.45 kg). For safety, use both hands when handling this assembly. |
If you plan to return the removed fan tray to the factory for repair or replacement, repackage the unit in the original shipping container, if available, and prepare the package for return shipment.
For the following procedure, it is assumed that you have removed a defective fan tray from the lower card cage and that you intend to replace it with a new one.
To install a new fan tray in the lower card cage, perform the following steps.
| Caution For safety, use both hands when handling the card cage fan tray. |
Step 1 With one hand, grasp the ring-shaped insertion/extraction tab in the middle of the new fan tray carrier and raise the front end of the assembly.
Step 2 Place your free hand beneath the assembly to support its weight; position the assembly in front of the guide rails in the lower card cage.
Step 3 Carefully insert the assembly into the guiderails (see Figure 7-11).
Step 4 Using gentle pressure on the insertion/extraction tab, fully insert the assembly until the sheet metal carrier rests against the stops for the captive installation screws.
If the router is operational, you should hear the fans come up to normal rotational speed at this time.
Step 5 Tighten the two captive installation screws at the sides of the fan tray carrier.
Step 6 Restore the air filter assembly so that it covers the lower card cage and fully encloses the router. Secure the assembly in place by tightening its two panel fastener screws.
To verify that the card cage fan tray is operating properly, go to the section entitled "Checking the Installation of a Fan Tray."
To remove the power supply fan tray from the router, perform the following steps.
Step 1 Loosen the captive installation screw on the honeycomb faceplate of the power supply fan tray (see Figure 7-12).
Step 2 With one hand, grasp the loosened installation screw on the power supply fan tray faceplate; gently pull the fan tray halfway out of the guide rails to disengage the fan tray connector from the backplane (see Figure 7-12).
| Caution For safety, make sure that the fans have stopped spinning before grasping the fan tray assembly. It will take several seconds for the fans to stop spinning once the assembly is disengaged from the backplane. |
Step 3 Using one hand, grasp the fan tray from above and slide the assembly completely out of the router (see Figure 7-12).
Step 4 Set the fan tray aside.
If you plan to return the removed fan tray to the factory for repair or replacement, repackage the fan tray in the original shipping container, if available, and prepare the package for return shipment.
For the following procedure, it is assumed that you have already removed a defective power supply fan tray and that you intend to replace it with a new one.
To install the new power supply fan tray, perform the following steps.
Step 1 Using one hand, grasp the the power supply fan tray from above (as shown in Figure 7-13).
Step 2 Position the assembly in front of the guide rails in the fan tray bay.
Step 3 Carefully insert the fan tray into the guide rails in the bay (see Figure 7-13).
Step 4 Using gentle pressure, fully insert the assembly into the bay until the sheet metal carrier of the fan tray rests against the stop for the captive installation screw.
Step 5 Tighten the captive installation screw on the fan tray faceplate (see Figure 7-13).
To verify that the power supply fan tray is operating properly, proceed to the following section.
To verify that a replacement fan tray is operating properly, perform the following steps:
Step 1 Check the following components to make sure that they are secure:
Step 2 Observe the status LEDs on the CSC faceplate (see the following section entitled "Status LEDs for the Fan Trays").
Step 3 Listen for the sound of the running cooling fans in the card cage fan tray and the power supply fan tray. In a noisy environment, it may be difficult to hear the fans running. If so, proceed to Step 4.
Step 4 Run your hand along the width of the top rear of the router enclosure to verify that air is being exhausted from the vents for the upper card cage and the power supply bays.
If either fan tray fails to operate properly, contact your Cisco service representative for assistance.
The status LEDs for the fan trays are arranged side-by-side on the CSC faceplate (see Figure 7-14). The positions of these LEDs correspond to the positions of the fan trays in the router.
The left LED indicates the status of the card cage fan tray, and the right LED indicates the status of the power supply fan tray.
Table 7-1 lists the status LEDs for the fan trays and describes their m eaning in the on/off state.
| Status LEDs | State | Description |
|---|---|---|
| Left LED | On (amber) | Indicates that a fault exists in the card cage fan tray |
| Right LED) | On (amber) | Indicates that a fault exists in the power supply fan tray |
| Both LEDs | Off | Indicates that both fan trays are operating normally |
If a fan in one of the fan trays fails, the following occurs:
You can check the status of the fan tray LEDs by issuing the show environment leds command at the privileged EXEC mode prompt. You can check the status of the fan trays themselves by issuing the show environment all command at the privileged EXEC mode prompt.
The following sections present the procedures for removing and replacing the GRP. The GRP can be installed in any of the upper card cage slots 0 through 3 and 4 through 7. By convention, however, it is normally installed in slot 0 (the left-most slot in the upper card cage).
| Caution Removing the GRP while the system is operating will cause the system to stop forwarding packets and might cause the system to cease network operation. Therefore, it is recommended that you not remove the GRP while the system is operating. To avoid system problems, it is best to power down the router before removing or replacing the GRP. |
You will need the following tools and parts to remove and replace the GRP.
| Caution A GRP that is only partially removed from the backplane can halt the system. |
| Caution Before replacing the GRP with another, back up the running configuration file to a Trivial File Transfer Protocol (TFTP) file server or an installed Flash memory card. Doing so enables you to retrieve the file later for reuse. If you do not back up the configuration file, it will be lost and you will have to manually reenter the configuration information for the router. If you are temporarily removing the GRP and will be reinstalling it shortly, you need not back up the configuration file, because lithium batteries on the GRP retain the configuration file in NVRAM until the GRP is reinstalled. |
Although Figure 7-15 appearing later in this section illustrates a GRP being removed from a Cisco 12012, the procedure for removing a GRP from a Cisco 12008 is essentially identical. For purposes of the Cisco 12008 GRP removal procedure, it is assumed that the GRP is installed in slot 0 of the upper card cage.
To remove the GRP from the Cisco 12008, perform the following steps:
Step 1 Set the rotary power switch(es) on the installed power supply(ies) to the Standby position (AC-input power supply) or the OFF position (DC-input power supply).
Step 2 If you are removing the GRP from the system with the intent to replace it with another GRP, copy the currently running configuration file to a TFTP server in the network or to a Flash memory card installed in either PCMCIA slot 0 or 1. Backing up the configuration file in this manner enables you to retrieve it later so that it can be copied to NVRAM on the new GRP.
Step 3 Put on an antistatic wrist strap and make sure that it makes ample contact with your skin. Insert the equipment end of the wrist strap (the banana jack) into the ESD socket in the lower left corner of the upper card cage.
Step 4 If you are removing the GRP with the intent to upgrade its memory (and will be reinstalling it shortly), you can leave any interface cables (for the console port, auxiliary port, and Ethernet ports) attached to the GRP, provided that doing so will not strain the cables when you place the GRP on an antistatic mat or foam pad to perform the memory upgrade procedure.
If the interace cables are not long enough to allow you to place the GRP on an antistatic mat or foam pad without undue stress to the cables, disconnect the cables before removing the GRP and proceeding with the memory upgrade task.
Step 5 Using a 3/16-inch flat-blade screwdriver, loosen the two captive screws at the top and bottom of the GRP faceplate (see Figure 7-15a).
Step 6 Place your thumbs on each of the ejector levers and simultaneously pivot them away from the GRP faceplate (see Figure 7-15b). This action disengages the GRP from the backplane.
Step 7 Grasp the GRP faceplate with one hand and pull the GRP straight out of the slot; place your free hand beneath the GRP to support its weight (see Figure 7-15c). Avoid touching the GRP printed circuit board, its components, or its edge connector pins.
Step 8 Place the removed GRP on an antistatic mat or foam pad.
If you plan to return the GRP to the factory for repair or replacement, immediately place it in an antistatic bag for ESD protection.
If you removed the GRP with the intent to upgrade its onboard memory, proceed to the section entitled "Installing a New DIMM on the GRP."
As noted in the preceding section, Figure 7-15 illustrates a GRP being removed from a Cisco 12012. For purposes of the GRP installation procedure presented in this section, it is assumed that you will be performing the reverse of the procedure illustrated in Figure 7-15, but in the context of the Cisco 12008. It is also assumed that you will be installing the GRP in slot 0 of the upper card cage of the Cisco 12008.
To install the GRP in the Cisco 12008, perform the following steps:
Step 1 Put on an antistatic wrist strap and make sure that it makes ample contact with your skin. Insert the equipment end of the wrist strap (the banana jack) into the ESD socket in the lower left corner of the upper card cage.
Step 2 Grasp the GRP faceplate with one hand and place your free hand under the card carrier to support the weight of the card; avoid touching the GRP printed circuit board, its components, or its edge connector pins.
Step 3 Position the GRP for insertion into slot 0; align the top and bottom edges of the card carrier with the guiderails at the top and bottom of slot 0.
Step 4 Carefully slide the GRP into slot 0 until the ejector levers make contact with the top and bottom lip of the upper card cage enclosure.
Step 5 Using the thumb and forefinger of each hand, simultaneously pivot both ejector levers toward the center of the GRP faceplate until they are perpendicular to the faceplate. This action fully seats the GRP in the backplane.
| Caution A GRP that is only partially seated in the backplane can halt the system. |
Step 6 Using a 3/16-inch flat-blade screwdriver, tighten the captive installation screws at the top and bottom of the GRP faceplate.
Step 7 If you previously disconnected the interface cables from the console, auxiliary, and Ethernet ports to remove the GRP, or if you are installing a new GRP, connect the interface cables to the appropriate ports on the GRP.
Step 8 Ensure that the console terminal is turned on.
Step 9 Turn the rotary power switch(es) on the power supply(ies) to the ON position to apply system power.
This completes the GRP replacement procedure.
To verify that the new (or reinstalled) GRP is functioning properly, perform the following steps:
Step 1 Verify the following conditions:
Step 2 Ensure that a console terminal is connected to the console port on the GRP and that the console is turned on, or that you are able to accomplish a remote login to the router from another host in the network by means of a telnet session.
Step 3 Check the startup banner and displays to ensure that the system restarts properly and that all the router interfaces reinitialize in the proper state.
Procedures for removing and replacing line cards are described in conjunction with the memory upgrade procedures presented in the section entitled "Upgrading Memory on a Line Card."
This section presents the procedures for removing, installing, and verifying the installation of the CSC and the SFC.
When you install a new CSC or SFC, the router's OIR capability enables the new card to be recognized, initialized, and become operational in a transparent manner.
For the procedures in this section, it is assumed that you will be removing and replacing a switch card from a fully redundant and operational router.
When you replace a failed switch card, only four switch planes remain available to the router. For the duration of the replacement procedure, no redundant plane exists to take over if any other switch plane fails.
Under normal operating conditions in a fully redundant system, you would not leave a CSC slot or an SFC slot vacant for any length of time beyond that required to replace a failed card.
Two dedicated slots (CSC0 and CSC1) in the middle of the upper card cage are reserved for exclusive use by CSCs. Three dedicated slots (SFC0, SFC1, and SFC2) in the lower card cage are reserved for exclusive use by SFCs.
You will need the following tools and parts to install or replace a switch card:
To remove an SFC from the router, perform the following steps.
Step 1 Loosen the two panel fastener screws on each side of the air filter assembly (see Figure 7-16); remove the assembly and set it aside.
Step 2 Grasp the front of the card carrier's metal faceplate, unseat the card from the backplane, and slide the SFC out of the slot, supporting the weight of the card by placing your other hand underneath the card carrier. Store the SFC in an antistatic bag or in an antistatic rack.
Step 3 If you intend to return the card for repair or replacement, leave the card in its antistatic bag and prepare a return package for shipment.
| Caution Do not place any tools in the lower card cage. Also, be careful not to damage the honeycomb screen in the air filter assembly. Damaging this screen might restrict the flow of cooling air through the switch router, causing an overtemperature condition in the router. |
To install an SFC in the router, perform the following steps:
Step 1 With one hand, grasp the new SFC by its faceplate; support the weight of the card by placing your free hand beneath the card carrier.
Step 2 Position the card horizontally and insert it into the vacant slot until the SFC is firmly seated in the backplane (see Figure 7-17).
Step 3 Restore the air filter assembly to the router to fully enclose the lower card cage. Secure the assembly in place by tightening its two panel fastener screws.
This completes the procedure for removing and installing an SFC.
To verify the operability of the new SFC, perform the procedure in the section entitled "Checking the Installation of Switch Cards."
To remove a CSC from the router, perform the following steps.
Step 1 Loosen the two captive installation screws beneath the card ejector levers at the top and bottom of the card (see Figure 7-18).
Step 2 Grasp the ejector levers and pull them away from the card faceplate to unseat the card from the backplane (see Figure 7-18).
Step 3 Touching only the ejector levers or the metal card carrier proper, slide the card out of the slot and store it in an antistatic bag or in an antistatic card rack (see Figure 7-18).
Step 4 If you intend to return the card for repair or replacement, leave the card in its antistatic bag and prepare a return package for shipment.
At the conclusion of this procedure, you must either install a replacement CSC or a blank filler panel to maintain the integrity of the router enclosure. Doing so is essential to maintain the proper flow of cooling air through the router and to ensure EMI compliance.
To install a CSC in the router, perform the following steps.
Step 1 With one hand, grasp the new CSC by its faceplate; support the weight of the card by placing your free hand beneath the card carrier.
Step 2 Position the card vertically and insert it into the vacant slot in the upper card cage until the card's ejector levers meet the retention lips at the top and bottom of the enclosure (see Figure 7-19).
Step 3 Pivot the ejector levers toward the card faceplate to engage the retention lips at the top and bottom of the enclosure and firmly seat the card in the backplane (see Figure 7-19).
This completes the procedure for removing and installing a CSC.
To verify that the new CSC is operating properly, perform the procedure in the following section.
This section tells you how to verify the operability of a newly installed switch card. Refer to Figure 7-20 while performing the following procedures.
To verify that a new switch card is operating properly, perform the following steps:
Step 1 Observe the LEDs on the faceplate of the CSC(s), as follows:
| Status LEDs | State | Description |
|---|---|---|
| Top LED (FAIL) | On (amber) | Indicates that the CSC is faulty |
| Bottom LED (ENABLED) | On (green) | Indicates that the CSC is operational |
| Status LEDs | State | Description |
|---|---|---|
| Top LED (FAIL) | On (amber) | Indicates that a fault has been detected in one or more of the SFCs. |
| Bottom LED (ENABLED | On (green) | Indicates that the SFCs are installed and operating normally. |
| Both LEDs | Off | Indicates that no SFCs are installed in the router. |
Step 2 The secondary indication of SFC status is provided by two LEDs on each SFC (see Figure 7-21).
Observe each pair of LEDs on each SFC for the following indications:
Step 3 If the new switch card is faulty, perform the following steps, as appropriate:
In Step 2 above, since the SFCs are not visible during normal operation, you must remove the air filter assembly from the router to observe the status LEDs on each SFC (see Figure 7-21). These LEDs are arranged side-by-side behind a raised tab near the middle of the card (as you view the SFC from the front of the router).
Alternatively, you could issue the following command at the privileged EXEC mode prompt to show the status of all the router's LEDs:
router# show environment leds
If the CSC indicates a fault with an SFC, you must still remove the air filter assembly from the switch router and observe the status LEDs on the SFCs themselves to determine which card is at fault.
This section presents procedures for removing and installing a cable-management tray or a cable-management bracket for the Cisco 12008.
To perform these procedures, you will need the following tools:
The cable-management tray (ACS-GSR8-CCBLM) is actually three pieces: end cap, top trim, and tray (see Figure 7-22).
To remove the cable-management tray while the system is operating, perform the following steps.
Step 1 Proceeding from left to right in the upper card cage, select the first line card. Starting with the interface cable for the bottom port on the line card (for cards with multiple ports), remove it from the associated finger on the cable-management tray (see Figure 7-23). Continue this for each interface cable.
Step 2 Once the interface cables are removed from the cable-management tray, position the interface cables out of the way in preparation for removal of the cable-management tray.
Step 3 Remove the four installation screws securing the cable-management tray to the recessed router enclosure (see Figure 7-24). Save the screws for possible future use.
Step 4 Remove the top trim piece from the chassis by pulling it away from the chassis fasteners (see Figure 7-24, part 1).
Step 5 Remove the end cap (left-most, large finger piece) from the chassis by pulling it away from the chassis fasteners (see Figure 7-24, part 2).
Step 6 Pivot the bottom of the cable-management tray away from the recessed router enclosure (see Figure 7-24, part 3).
Step 7 Remove the cable-management tray from the router and set it aside.
This completes the removal procedure for the Cisco 12008 cable-management tray.
This section tells you how to install a cable-management tray in the Cisco 12008.
To install a cable-management tray while the system is operating, perform the following steps:
Step 1 Remove the replacement cable-management tray from its shipping container.
Step 2 Position the cable-management tray at an angle so that its top is oriented toward the tray recess in the router enclosure (see Figure 7-25).
Step 3 Pivot the bottom of the cable-management tray inward toward the router until it is flush against the sheet metal in the tray recess (see Figure 7-25, part 1).
Step 4 Secure the cable-management tray in the recess with the two right-most installation screws that you set aside in the previous section entitled "Removing a Cable-Management Tray."
Step 5 Install the end cap onto the chassis by pushing it onto the chassis fasteners (see Figure 7-25, part 2).
Step 6 Secure the cable-management tray in the recess with the remaining two installation screws that you set aside in the previous procedure entitled "Removing a Cable-Management Tray."
Step 7 Install the top trim piece onto the chassis by pushing it onto the chassis fasteners (see Figure 7-25, part 3).
Step 8 Carefully arrange the attached interface cables in the bottom of the cable-management tray so that they emerge from the tray directly over the intended line card (see Figure 7-29).
This completes the installation procedure for the Cisco 12008 cable-management tray.
This section tells you how to remove a cable-management bracket from the Cisco 12008.
To remove a cable-management bracket from a line card, perform the following steps:
Step 1 On a piece of paper, list the current interface cable connections to the port(s) on each line card.
Step 2 Starting with the interface cable for the bottom port on the line card (for cards with multiple ports), disconnect the cable from the bottom line card port (see Figure 7-26a).
Step 3 Proceeding upward, remove the interface cable from between all the metal fingers supporting the cable keeper clips (see Figure 7-26b).
Step 4 Remove the interface cable from the associated cable keeper clip, as shown in Figure 7-26c). Set the cable aside for later use.
Step 5 Go back to Step 2 and proceed through the cable removal procedure in a bottom to top direction until you have removed all of the interface cables from the line card ports.
Step 6 Once all of the line card interface cables are removed, loosen the captive installation screws at the top and bottom of the cable-management bracket (see Figure 7-27).
Step 7 Remove the cable-management bracket from the line card.
This completes the removal procedure for the Cisco 12008 cable-management bracket.
For the procedure in this section, it is assumed that you have installed a new line card in the router, in which case you must also install a cable-management bracket on the card. A small hook on the top of the cable-management bracket allows you to hook the bracket onto small cutouts on the cable-management tray during a line card replacement procedure.
To install a cable-management bracket on a line card, perform the following steps:
Step 1 Attach the cable-management bracket to the line card by means of the two captive installation screws at the top and bottom of the cable-management bracket (see Figure 7-28).
Step 2 Carefully arrange the interface cables in the cable-management tray (for line cards with multiple ports); determine the appropriate length of each cable for the intended port and route the cables down to the line card ports.
Step 3 Starting with the bottom port on the line card, connect the interface cables to the intended port (see Figure 7-29, part 1).
Step 4 Carefully press the interface cable into the associated cable keeper clip on the cable-management bracket clip (see Figure 7-29, part 2). Avoid any kinks or sharp bends in the cable.
Step 5 Proceeding upward, carefully press the interface cable between the metal fingers that support the cable keeper clips (see Figure 7-29, part 3).
Step 6 Go back to Step 3 and proceed through the cable attachment procedure in a bottom-to-top direction until you have attached all the interface cables to the line card ports.
This completes the installation procedure for the Cisco 12008 cable-management bracket.
This section presents the procedures for upgrading the DRAM DIMMs on the GRP. To upgrade these memory modules, you must power down the system and remove the GRP from the router.
The GRP incorporates main memory (DRAM) that enables an onboard processor to execute Cisco IOS software and store network routing tables. By populating the two available DRAM DIMM sockets on the GRP, you can configure main memory ranging from 64 MB (the default configuration) to 256 MB.
You will need the following tools to install or replace memory on the GRP:
Before beginning the memory upgrade procedure in this section, refer to Table 7-4, which outlines the available DRAM DIMMs for upgrading GRP memory.
The two DRAM DIMM sockets on the GRP (see Figure 7-31), labeled U39 (P4 DRAM bank 1) and U42 (P4 DRAM bank 2), respectively, enable you to configure DRAM in desired increments ranging from 64 MB to 256 MB.
Table 7-4 lists the available DRAM configurations and associated product numbers for upgrading memory on the GRP. The default DRAM configuration is 64 MB--one 64-MB DIMM installed in socket U39.
| DRAM DIMM Sockets | DIMM Module | Memory Provided | Product Number |
| U39 | 1 64-MB DIMM | 64 MB | MEM-GRP/LC-641 |
| U39 and U42 | 2 64-MB DIMM2 | 128 MB | MEM-GRP/LC-64= |
| U39 | 1 128-MB DIMM | 128 MB | MEM-GRP/LC-128= |
| U39 and U42 | 2 128-MB DIMMs | 256 MB | MEM-GRP/LC-256= |
Use the following procedure to remove a GRP from the router:
Step 1 Turn the power switch on each power supply to the OFF position.
On an AC-input power supply, this action turns the rotary power switch to the Standby position.
Step 2 Put on an antistatic wrist strap and make sure that it makes adequate contact with your skin. Insert the equipment end of the wrist strap (the banana jack) into the ESD socket in the lower left edge of the upper card cage.
Step 3 Disconnect the console terminal cable and any auxiliary or Ethernet interface cables attached to the ports on the faceplate of the GRP. Set the cables aside.
Step 4 Loosen the captive screw at each end of the GRP faceplate (see Figure 7-30a).
Step 5 Pivot the two ejector levers out, away from the GRP faceplate to unseat the card from the backplane connector (see Figure 7-30b).
Step 6 Grasp the GRP faceplate with one hand and pull the GRP straight out of the slot, keeping your other hand under the GRP to support its weight. Avoid touching the GRP printed circuit board, it components, or its edge connector pins (see Figure 7-30c).
Step 7 Place the removed GRP on an antistatic mat or foam pad.
This completes the GRP removal procedure. Go to the next section for the procedure to remove the DRAM DIMMs from the GRP.
When removing DRAM DIMMs from the GRP, first place them on an antistatic mat and then transfer them to an antistatic bag for ESD protection. Removed DRAM DIMMs can be used in other compatible equipment.
Use the following procedure to remove a DIMM from a GRP:
Step 1 Attach an antistatic wrist strap to yourself and to the bare metal on the GRP carrier.
Position the GRP on the antistatic mat so that the faceplate is toward you and the backplane connector is away from you.
Step 2 Locate the DRAM DIMMs on the GRP (see Figure 7-31). The DIMMs occupy U39 (bank 1) and U42 (bank 2).
Step 3 For the DIMM you want to remove, pull down the lever on the DIMM socket to release the DIMM from the socket (see Figure 7-32).
Step 4 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. Handle the edges of the DIMM only; avoid touching the memory module or pins and the metal traces, or fingers, along the socket edge (see Figure 7-33).
Step 5 Place the DIMM in an antistatic bag to protect it from ESD damage.
Repeat Step 3 through Step 5 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 presents the procedure for installing a new DIMM on the GRP.
| Caution To prevent system and memory problems when installing DRAM, the card's DRAM DIMMS must be 3.3-volt, 60-ns, extended data output (EDO) devices. Do not attempt to install other DRAM devices in the GRP's DIMM sockets. |
| Caution DIMMs are susceptible to ESD damage and can be shorted by mishandling. Handle DIMMs by their edges only; avoid touching the DIMMs, pins, or traces (the metal fingers along the connector edge of the DIMM). |
Perform the following steps to install the new DIMMs:
Step 1 Attach an antistatic wrist strap to yourself and to the bare metal on the GRP carrier.
Step 2 Place the GRP on an antistatic mat or pad.
Step 3 Position the GRP so that the faceplate is toward you and the backplane connector is away from you.
Step 4 Locate the two DRAM DIMM sockets on the GRP, labeled as follows (see Figure 7-31):
Step 5 Remove a new DIMM from the antistatic bag.
Step 6 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 7-33).
Step 7 Tilt the DIMM to approximately the same angle as the socket and insert the entire connector edge into the socket. Note the two notches (keys) on the connector edge of the DIMM. These keys are intended to ensure correct orientation of the DIMM in the socket.
| 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 8 Gently push the DIMM into the socket until the lever is flush against the side of the DIMM socket and the DIMM's backplane connector is fully inserted. If necessary, rock the DIMM gently back and forth to seat it properly (see Figure 7-34).
Step 9 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 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 5 through Step 9 for the remaining DIMM, as required.
This completes the DIMM replacement procedure. Proceed to the next section to replace the GRP in the slot from which it was removed.
After verifying that the DRAM DIMMs are properly installed in the GRP, perform the following steps to reinstall the GRP in its original slot:
Step 1 Grasp the faceplate of the GRP with one hand and place your free hand under the card carrier to guide the GRP into the appropriate slot.
Step 2 Slowly slide the card carrier into the slot until the ejector levers make contact with the front of the card cage.
Step 3 Ensure that the ejector levers engage the lip on the front of the card cage.
Step 4 Grasp the two card ejector levers and pivot them toward the GRP faceplate until they are perpendicular to the faceplate. This seats the GRP completely in the backplane.
Step 5 Tighten the captive installation screws at the top and bottom of the GRP faceplate.
Step 6 Reconnect the console terminal cable and any auxiliary or Ethernet interface cables to the appropriate connectors on the GRP faceplate.
Step 7 Set the rotary power switch on each power supply faceplate to the ON position.
Proceed to the next section to verify the installation of the DRAM DIMMs on the GRP.
Turn on system power and allow the system to reboot. If the system fails to boot properly or if the console terminal displays a checksum or memory error after you have installed new DIMMs, check the following:
This section presents the procedures for upgrading memory on a Cisco 12000 series line card.
The Cisco 12000 series line cards used with the Cisco 12008 incorporate the following types of onboard memory:
Both types of memory in the Cisco 12000 series line cards can be upgraded in the field.
You will need the following tools to install or replace memory on the Cisco 12000 series line cards:
Before attempting to upgrade line card memory, consult Table 7-5 or Table 7-6 to determine the particular DIMM module(s) that you will need to achieve the desired memory configuration.
Table 7-5 lists the available configurations and associated product numbers of DRAM DIMMs for upgrading processor memory on a line card.
Table 7-6 lists the available configurations and associated product numbers of SDRAM DIMMs for upgrading the transmit and receive buffer memory on a line card.
| DRAM DIMM Sockets | DIMM Module | Memory Provided | Product Number |
| P4 DIMM0 | 1 32-MB DIMM | 32 MB | MEM-LC-321 |
| P4 DIMM1 | 1 32-MB DIMM | 64 MB2 | MEM-LC-32=2 |
| P4 DIMM0 | 1 64-MB DIMM | 64 MB | MEM-GRP/LC-64= |
| P4 DIMM0 | 1 128-MB DIMM | 128 MB | MEM-GRP/LC-128= |
| P4 DIMM0 and P4 DIMM1 | 2 128-MB DIMMs | 256 MB | MEM-GRP/LC-256= |
| SDRAM DIMM Sockets for Receive (RX) or Transmit (TX) Buffers | DIMM Module | Memory Provided | Product Number |
| DIMM0 and DIMM1 | 2 8-MB DIMMs | 16 MB | MEM-LC-PKT-16=1 |
| DIMM0 and DIMM1 | 2 16-MB DIMMs | 32 MB | MEM-LC-PKT-32= |
| DIMM0 and DIMM1 | 2 32-MB DIMMs | 64 MB | MEM-LC-PKT-64= |
| DIMM0 and DIMM1 | 2 64-MB DIMMs | 128 MB | MEM-LC-PKT-128= |
Also ensure that you have the proper tools at hand and that you are wearing appropriate ESD-prevention equipment.
This section presents the procedures for removing a line card from the router. The router supports online insertion and removal (OIR) of line cards; thus,you can remove and replace any line card while the system remains powered up and operational.
To remove a line card from the router, perform the following steps:
Step 1 Put on an antistatic wrist strap and make sure that it makes adequate contact with your skin. Insert the equipment end of the wrist strap (the banana jack) into the ESD socket in the lower left corner of the upper card cage.
Step 2 Disconnect all network interface cables from the ports on the line card faceplate.
Step 3 Before you remove a line card from the router, you must first remove the vertical cable-management bracket attached to the line card faceplate. To do so, perform the following steps:
(a) Loosen the two captive installation screws at the top and bottom of the vertical cable-management bracket (see Figure 7-36).
(b) Detach the bracket from the line card and hook it in the cutout located on the front of the horizontal cable-management tray (above the upper card cage).
Step 4 Loosen the captive installation screw at the top and bottom of the line card faceplate (see Figure 7-37a).
Step 5 Pivot the two card ejector levers out, away from the line card faceplate to unseat the card from the backplane (see Figure 7-37b).
Step 6 Grasp the line card faceplate with one hand and pull the line card straight out of the slot, keeping your other hand under the line card to support its weight. Avoid touching the line card printed circuit board, its components, or its edge connector pins (see Figure 7-37c).
Step 7 Place the removed line card on an antistatic mat or foam pad.
This completes the line card removal procedure. Proceed to the next section to remove the DRAM DIMMs from the line card.
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 7-35.
The following guidelines apply to line card processor DRAM:
The following guidelines apply to line card transmit and receive buffer SDRAM:
| Caution To prevent system and memory problems, all DIMMs installed in the line card must be 3.3-volt devices. |
To remove a DIMM from a line card, perform the following steps:
Step 1 Put on an antistatic wrist strap and attach the equipment end of the strap to the bare metal surface of the line card carrier.
Step 2 Position 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 7-35).
Step 4 For the DIMM you want to remove, pull down the release lever on the DIMM socket (see Figure 7-32).
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 4 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 the Cisco 12008, perform the following steps:
Step 1 Put on an antistatic wrist strap and attach the equipment end of the strap to the bare metal surface of the line card carrier.
Step 2 Remove the new DIMM from its protective antistatic bag.
Step 3 Grasp the DIMM only by its top corners; do not touch the memory chips or the keyed insertion fingers along the bottom edge of the DIMM (see Figure 7-33).
Step 4 To position the DIMM for insertion, orient it at the same angle as the DIMM socket. Note the two notches (keys) on the bottom edge of the module. These keys ensure proper registration of the DIMM in the socket.
Step 5 Gently insert the DIMM into the socket until the release lever is flush against the side of the socket (see Figure 7-34). If necessary, rock the DIMM back and forth gently to ensure that it is fully seated.
| 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 Verify that the release lever is flush against the side of the socket. If it is not, the DIMM might not be seated properly.
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 this procedure for any remaining DIMM(s) that you want to install to complete your desired memory configuration.
Proceed to the following section to reinstall the line card in the router.
To reinstall a line card in your router, perform the following steps:
Step 1 Put on an antistatic wrist strap and make sure that it makes ample contact with your skin. Insert the equipment end of the wrist strap (the banana jack) into the ESD socket in the lower left corner of the upper card cage.
Step 2 Grasp the faceplate of the line card with one hand and place your free hand under the card carrier to support the weight of the card; position the card for insertion into the card cage slot.
Step 3 Gently insert the card into the slot until the card ejector levers make contact with the lip of the card cage.
Step 4 Grasp the card ejector levers at the top and bottom of the line card faceplate and pivot them inward until they are perpendicular to the faceplate. This action firmly seats the card in the backplane.
Step 5 Tighten the captive screws at the top and bottom of the line card faceplate.
Step 6 Replace the vertical cable-management bracket, as follows:
(a) Unhook the line card vertical cable-management bracket from the horizontal cable tray.
(b) Position the bracket over the front of the line card faceplate.
(c) Tighten the two captive screws at the top and bottom of the vertical cable-management bracket to secure it to the line card.
Step 7 Restore the network interface cables to their original ports on the line card faceplate.
Proceed to the next section to check the installation of the line card memory.
After installing the new line card memory, replace the card and turn on system power. The system should reboot properly.
If the system fails to boot properly after the upgrading of DRAM or SDRAM on the line card, or if the console terminal displays a checksum or memory error, ensure that the DRAM or SDRAM DIMMs are installed properly on the line card by performing the following steps:
Step 1 If necessary, shut the system down and remove the line card from the upper card cage, as previously described.
Step 2 Check the alignment of the DRAM and SDRAM DIMMs by looking at them across the horizontal plane of the card. The DIMMs should reside in their sockets at the same angle and be fully inserted into their respective sockets.
Step 3 If a DIMM is not correctly aligned, remove it and reinsert it.
Step 4 Reinstall the line card in the upper card cage as previously described, reboot the system, and perform another installation check.
If you have upgraded line card 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 system 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.
If the system 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, make note of any console error messages, unusual LED states, or other system indications or behaviors that might help to resolve the problem.
The time that the system requires to initialize may vary with different router configurations and memory configurations. For example, a router with a larger complement of memory might take longer to boot.
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