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This chapter provides the procedures for installing the Cisco 12012 and contains the following sections:
Before you install your Cisco 12012, your installation site should already be prepared. Ensure that you have planned a compatible location for the Cisco 12012 and that you have considered the following:
 | Warning The Cisco 12012 must be installed in a rack that is secured to the building structure. |
 | Caution To prevent system problems, do not mix power supply input types in the Cisco 12012 router. All power supplies installed in a router must be either AC-input or DC-input. |
The Cisco 12012, fully configured, can weigh 380 lb (172.3 kg). The system installation process is structured to reduce the weight of the system by removing components from the card cage assembly and the frame, then installing the empty frame in the rack, and finally, reinstalling all of the components in the card cage assembly and the frame.
To make the installation process easier, reduce the weight of the system. The installation procedure requires you to remove all of the components from the card cage assembly and the frame, then install the empty frame in the rack, and finally reinstall all of the components in the card cage assembly and the frame.
An optional brace bar is shipped with every Cisco 12012 as part of the accessory kit. You install the brace bar across the front of the rack to support the frame while you secure the frame is in the rack.
| Caution The brace bar can only support the weight of an empty frame. It is not designed to support the full weight of the Cisco 12012. |
This is an optional procedure; you can install the Cisco 12012 in the rack without a brace bar. If you choose not to use the brace bar, proceed to the next section "Removing the Cisco 12012 Components before Installing the Frame."
Perform the following steps to install the brace bar (see Figure 3-1):
Step 1 Determine the proper height to install the brace bar in the rack. We recommend that you install the brace bar not more than 12 inches (30.5 cm) above the floor to maintain a low center of gravity for the system.
Step 2 Position the brace bar between the front posts of a four-post rack or telco-style rack; make sure that the bar is level.
Step 3 Secure the brace bar to the rack using the two screws provided in the accessory kit.
To make the frame installation process easier, reduce the total weight of the system. The installation process requires you to remove all of the components from the card cage assembly and the frame, then install the empty frame in the rack, and finally reinstall all of the components in the card cage assembly and the frame.
Before you can remove the Cisco 12012 components, you must position the Cisco 12012, mounted on its shipping pallet (with the shipping container disassembled), as close to the installation site as possible.
A Cisco 12012 system configured for either source AC or source DC power is shipped with power supplies installed in the power supply bay. Redundant AC-input power supplies (third and fourth power supplies) are shipped in a large cardboard box on the front of the pallet.
Procedures in the following sections provide the steps for removing the Cisco 12012 components:
The Cisco 12012 has two blower modules, which provide cooling air to the card cage assembly. The blower modules slide on rails into and out of the top and bottom of the frame and attach to the frame with two captive screws each. A snap-on blower-module front cover is mounted over the faceplate of each blower module.
Perform the following steps to remove a blower module:
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 Grasp both edges of the blower module front cover and pull it straight out to detach the front cover from the blower module faceplate. (See Figure 3-2.) Set the front cover aside.
Step 3 Loosen the two captive screws on the blower module faceplate. (See Figure 3-3.)
| Caution The blower module weighs 22 lb (10 kg). Use two hands when handling a blower module. |
Step 4 Grasp the blower module handle and pull it straight out to disconnect the blower module from the connector at the back of the frame. Slide the blower module halfway out of the frame.
Step 5 Place your free hand underneath the blower module for support and slide the blower module completely out of the frame. Set the blower module aside.
Repeat Step 2 through Step 5 for the second blower module.
Before you can remove the card cage assembly, you must remove the cards installed in it. This section contains procedures for removing cards from the upper and lower card cages. The card cage assembly is a single assembly that includes the upper card cage, the lower card cage, and the power supply bay. (See Figure 3-4.) The card cage assembly slides on rails into and out of the front of the frame and attaches to the frame with six captive screws.
The upper card cage has 12 user-configurable slots (numbered 0 through 11, from left to right) that can support a combination of line cards and a GRP. The upper card cage also has a non-configurable slot (rightmost slot, labeled Alarm card) for an alarm card.
To reduce the weight of the card cage assembly, you need to remove the cards from slots 0 through 11.
Perform the following steps to remove a card from the upper card cage:
Step 1 Attach an ESD wrist strap to your wrist and to one of the two ESD connection sockets located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 Proceeding from left to right, identify each card and note its slot number on a piece of paper. (This step will make reinstallation easier and will ensure that you reinstall cards in their proper slots.)
Step 3 Starting from slot 0 (left side of the upper card cage), select a card and loosen the two captive screws located at the top and bottom of the card. (See Figure 3-5a.)
Step 4 Pivot the two card ejector levers out, away from the card to unseat the card from the backplane connector. (See Figure 3-5b.)
Step 5 Grasp the card carrier edge with one hand and place your other hand under the carrier to support it. (See Figure 3-5c.) Slide the card out of the slot and place it immediately on the antistatic mat.
Repeat Step 3 through Step 5 for the rest of the cards in the upper card cage .
The lower card cage is located below the upper card cage, behind the air filter tray on the front of the card cage assembly. Mounted in the lower card cage is an air deflector, which directs airflow in the card cage assembly. The lower card cage has five keyed, color-coded, horizontal card slots for the clock and scheduler cards and switch fabric cards.
Clock and scheduler cards (light blue) are installed in the upper two card slots (slot 0 and slot 1); switch fabric cards (magenta) are installed in the lower three slots (slot 2, slot 3, and slot 4). When you want to remove or install either type of card, you must first open the air filter tray and pivot the air deflector up, out of the way to gain access to the lower card cage.
Perform the following steps to access the lower card cage and remove the clock and scheduler cards and switch fabric cards:
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 To gain access to the lower card cage, loosen the two captive screws at the top of the air filter tray and pivot the tray down, away from the lower card cage. (See Figure 3-6.)
| Caution To prevent damage, do not place any tools on the air filter tray or inside the lower card cage. Damaging the honeycomb screen on the air filter tray or in the lower card cage could restrict the air flow causing an overtemperature condition in the Cisco 12012. |
Step 3 To access the cards in the lower card cage, you must first move the air deflector up, out of the way. Lift the air deflector up and secure it to the top of the lower card cage by turning the air deflector latch knob counterclockwise. (See Figure 3-7.)
Step 4 Select one of the cards in the lower card cage. Grasp the two card ejector levers and simultaneously pivot both ejector levers 90 degrees away from the sides of the card cage to unseat the card from the backplane connector. (See Figure 3-8.)
Step 5 Touching only the metal card carrier, slide the card out of the slot and place it immediately on an antistatic mat.
Repeat Step 4 and Step 5 for the rest of the cards in the lower card cage, then proceed to Step 6.
Step 6 Release the air deflector latch (turn the latch clockwise) and lower the air deflector down to its stops.
Step 7 Pivot the air filter tray up so that it is flush with the front of the lower card cage and tighten the two captive screws.
If you ordered a Cisco 12012 configured for source DC power, the system is shipped with one or two DC-input power supplies installed in the power supply bays.
Perform the following steps to remove a DC-input power supply from the power supply bay:
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 Turn the power supply power switch to OFF (O).
Step 3 Using a flat-blade screwdriver or 10-mm nutdriver, turn the jackscrew on the power supply faceplate counterclockwise (eject) to unseat the power supply from the backplane connector.
Step 4 Grasp the power supply handle and pull the power supply halfway out of the bay. (See Figure 3-9.)
| Caution The DC-input power supply weighs 19 lb (8.3 kg). Use two hands when handling the power supply. |
Step 5 Place your free hand underneath the power supply to support it, and slide the power supply completely out of the bay. Set the power supply aside.
Repeat Step 2 through Step 5 for a second DC-input power supply.
If you ordered a Cisco 12012 configured for source AC power, the system is shipped with two AC-input power supplies installed in the power supply bay. Systems configured with redundant AC-input power supplies have two power supplies shipped installed in the power supply bay and one or two redundant power supplies shipped in a large cardboard box on the front of the pallet.
Perform the following steps to remove an AC-input power supply from the power supply bay:
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 Turn the power supply power switch to the STANDBY position.
Step 3 Loosen the captive screw on the power supply faceplate.
| Caution The AC-input power supply weighs 18 lb (8 kg). Use two hands when handling the power supply. |
Step 4 Grasp the power supply handle and pull straight out to disconnect the power supply from the backplane connector. Slide the power supply halfway out of the bay.
Step 5 Place your free hand underneath the power supply for support and slide the power supply completely out of the bay. Set the power supply aside.
Repeat Step 2 through Step 5 for the second AC-input power supply.
Perform the following steps to remove the card cage assembly (see Figure 3-10).
| Caution An empty card cage assembly weighs 65 lb (29.5 kg). You need two people to safely lift the assembly. To prevent injury, keep your back straight and lift with your legs, not your back. |
Step 1 Loosen the six captive screws on the front edges of the card cage assembly that secure it to the frame. (See Figure 3-10.)
Step 2 With one person positioned on each side of the frame, grasp the handle at the top of each side of the card cage assembly and carefully slide the card cage assembly half way out the front of the frame.
Step 3 With your free hand, grasp the handhold cutout on each side of the card cage assembly and carefully slide the card cage assembly completely out the front of the frame. Set the card cage assembly aside.
This section provides the procedure for installing the Cisco 12012 frame in a rack. Each side of the frame has mounting holes to secure the frame to the rack. For ease of installation, the holes on each side of the frame are divided into four groups: group A, B, C, and D. (See Figure 3-11.)
The mounting holes are drilled in the frame so that one mounting hole in each group aligns with a mounting hole in the rack. By using the corresponding mounting hole (in the same group) on the opposite side of the frame, you can level the frame in the rack.
| Caution An empty frame weighs 75 pounds (34 kg). You need two people to safely lift the frame. To prevent injury, keep your back straight and lift with your legs, not your back. |
Perform the following steps to remove the frame from the shipping pallet and install it in a rack:
Step 1 Remove the four bolts and retainer clips that secure the base of the frame to the pallet.
Step 2 With one person positioned on each side of the frame, grasp the front and side of the frame, lift the frame off of the pallet, and position the frame in the rack. (See Figure 3-12.)
Step 3 If you installed the optional brace bar, rest the frame on the brace bar while you perform the next step. If you did not install the optional brace bar, two people are needed to support the weight of the frame while a third person performs the next step.
Step 4 Look at the bottom group of mounting holes (group A) on the frame. (See Figure 3-11.) Align one of the holes in group A with a mounting hole in the rack.
Step 5 Install one of the mounting screws provided.
Step 6 Go to the other side of the frame and adjust the position of the frame so that the same mounting hole in the bottom group of mounting holes (group A) is aligned with a hole in the rack.
Step 7 Install one of the mounting screws provided.
Repeat Step 4 through Step 7 for mounting hole groups B, C, and D.
After you rack-mount the frame, you must reinstall all Cisco 12012 components. This section contains the procedures for reinstalling the card cage assembly, the line cards, the GRP, the clock and scheduler cards, the switch fabric cards, and the blower modules.
This section contains the instructions for reinstalling the card cage assembly in the frame.
| Caution The empty card cage assembly weighs 65 pounds (29.5 kg). You need two people to safely lift the card cage assembly. To prevent injury, keep your back straight and lift with your legs, not your back. |
Perform the following steps to reinstall the card cage assembly:
Step 1 With one person positioned on each side of the card cage assembly, grasp the handle on the front of the card cage assembly and the handhold cutout on the side of the card cage assembly.
Step 2 Lift the card cage assembly and position it on the rails inside the front of the frame. Slide the card cage assembly fully into the frame until the card cage assembly front flanges make contact with the front of the frame.
Step 3 Secure the card cage assembly to the frame by tightening the six captive screws.
The blower modules slide into the frame on rails located at the top and bottom of the frame. You must position the blower module correctly in the upper or lower frame rails so that the blower module electrical connector (recessed in the back of the blower module) mates with the connector mounted on the frame.
Perform the following steps to reinstall a blower module in the frame:
| Caution The blower module weighs 22 lb (10 kg). Use two hands when handling a blower module. |
Step 1 Attach a antistatic wrist strap to yourself and to one of the two ESD connection sockets located above the handles on the front edges of the upper card cage or to bare metal on the frame.
Step 2 Using two hands to support the blower module, position it in front of the frame so that the blower module connector (recessed in the back corner of the blower module) is aligned with the connector mounted on the back corner of the frame.
Step 3 Slide the blower module on the frame rails into the frame. Stop when the module makes contact with the frame connector.
Step 4 Firmly push on the blower module handle to seat the module connector in the frame connector. (When completely seated, the blower module faceplate flanges make contact with the front of the frame.)
Step 5 Tighten the two captive screws on the blower module faceplate.
Step 6 Position the blower module front cover over the four alignment holes in the blower module faceplate and snap the front cover onto the faceplate.
Repeat Step 2 through Step 6 for the other blower module.
Before you begin reinstalling cards in the upper card cage, identify slot assignments by referring to the list you prepared when you removed the cards.
Perform the following steps to reinstall a card in the upper card cage:
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 Select a card from the antistatic mat. Starting from slot 11 (right side of card cage), refer to your list of occupied card slots to determine which slot the card goes in.
Step 3 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 card cage slot.
Step 4 Carefully slide the card carrier into the slot until the ejector levers make contact with the front of the card cage, then stop.
Step 5 Grasp the two line card ejector levers and pivot them away from the card until they are perpendicular to the line card faceplate to completely seat the card in the backplane connector.
Step 6 Tighten the two captive screws at the top and bottom of the line card.
Repeat Step 2 through Step 6 for the rest of the cards in the upper card cage.
The lower card cage slots are keyed and color coded; clock and scheduler cards are installed in the upper two slots (light blue), and switch fabric cards are installed in the lower three slots (magenta).
Perform the following steps to reinstall the clock and scheduler cards and switch fabric cards in the lower card cage:
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 To access the lower card cage, loosen the two captive screws at the top of the air filter tray and pivot the tray down, away from the lower card cage. (See Figure 3-6.)
| Caution To prevent damage, do not place any tools on the air filter tray or inside the lower card cage. Damaging the honeycomb screen on the air filter tray or in the lower card cage could restrict the air flow causing an overtemperature condition in the Cisco 12012. |
Step 3 To access the card slots in the lower card cage, you must first move the air deflector out of the way. Lift the air deflector up and secure it to the top of the lower card cage by turning the air deflector latch knob counterclockwise. (See Figure 3-7.)
Step 4 Select a card from the antistatic mat. Determine which card slot the card should be installed in by checking the color of the label attached to the edge of the card carrier (near the ejector levers). Light blue labels identify clock and scheduler cards; magenta labels identify switch fabric cards.
Step 5 Grasp the card carrier edge with one hand and place your other hand under the carrier to support and guide it into the correct slot. Slide the card halfway into the slot. Avoid touching the card circuitry or any connectors.
Step 6 Pivot the card ejector levers out ninety degrees away from the sides of the card carrier.
Step 7 Continue sliding the card into the card cage slot until the card ejector levers engage the alignment grooves in the card cage slot.
Step 8 Grasp both card ejector levers and pivot them outward (toward the sides of the card cage) until they are parallel to the card carrier edge to seat the card in the backplane connector. Snap the card ejector levers into the sides of the card carrier.
Repeat Step 4 through Step 8 for the rest of the cards in the lower card cage, then proceed to Step 9.
Step 9 Release the air deflector latch and lower the air deflector down to its stops.
Step 10 Pivot the air filter tray up so that it is flush with the front of the lower card cage and tighten the two captive screws.
This completes the procedures for reinstalling components in the upper and lower card cages.
This section contains the instructions for placing the network interface cables in the Cisco 12012 cable-management system and attaching the network interface cables to the line card ports.
Additional line card information is contained in the respective configuration note for each line card. For example, if you are connecting the cables for a Quad OC-3c/STM-1c Packet-Over-SONET (POS) line card, refer to the configuration note Quad OC-3c/STM-1c Packet-Over-SONET Line Card Installation and Configuration (Document Number 78-4333-xx), which accompanies every Quad OC-3c/STM-1c POS line card that is shipped from the factory as a FRU or as an installed item in a Cisco 12012.
Perform the following steps to install the network interface cables in the Cisco 12012 cable-management system and connect the network interface cables to the line cards:
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets on the front edges of the upper card cage or to bare metal on the frame.
Step 2 Proceeding from left to right in the upper card cage, identify the network interface cables that attach to the first line card.
Step 3 One network interface cable at a time, carefully route the identified cable through the horizontal cable-management tray and down to the line card interface port. (See Figure 3-13.)
Step 4 Proceeding from bottom port to the top port (on line cards with multiple ports only), identify the network interface cable that connects to each line card port. Connect the network interface cable to the line card port. (See Figure 3-13a.)
Step 5 Proceeding from the bottom port to the top port (on line cards with multiple ports only), carefully press the network interface cable into the vertical cable bracket cable clip. Avoid any kinks or sharp bends in the cable. (See Figure 3-13b.)
Step 6 Proceeding from bottom port to the top port (on line cards with multiple ports only), route the network interface cable up the vertical cable bracket carefully pressing the interface cable into the rest of the cable clips. (See Figure 3-13c.) Avoid any kinks or sharp bends in the cable.
Repeat Step 2 through Step 6 for the rest of the line card interface cables.
The console and auxiliary ports for the Cisco 12012 are located on the GRP. The GRP also has an optional Ethernet port. This section contains connection equipment and pinout information for the console, auxiliary, and Ethernet ports on the GRP.
The GRP has two EIA/TIA-232 ports: a DCE-mode console port and a DTE-mode auxiliary port. The console port is a DCE DB-25 receptacle for connecting a console terminal, which you need to configure the Cisco 12012. The auxiliary port is a DTE DB-25 plug for connecting a modem or other DCE device (such as a channel service unit/data service unit (CSU/DSU) or other router) to the Cisco 12012 (see Figure 3-14).
For console and auxiliary port pinouts, refer to Table 3-1 and Table 3-2, respectively.
Both Data Set ready (DSR) and Data Carrier Detect (DCD) signals are active when the system is running. The console port does not support modem control or hardware flow control. The console port requires a straight-through EIA/TIA-232 cable. Table 3-1 lists the signals used on this port
| Pin | Signal | Direction | Description |
|---|---|---|---|
1 | GND | - | Ground |
2 | TxD | <--- | Transmit Data |
3 | RxD | ---> | Receive Data |
6 | DSR | ---> | Data Set Ready (always on) |
7 | GND | - | Ground |
8 | DCD | ---> | Data Carrier Detect (always on) |
20 | DTR | <--- | Data Terminal Ready |
The auxiliary port on the GRP is a DB-25 plug DTE port for connecting a modem or other DCE device (such as a CSU/DSU or other router) to the Cisco 12012. The port is located above the console port on the GRP faceplate. The auxiliary port supports hardware flow control and modem control. An example of a modem connection is shown in Figure 3-14. Table 3-2 lists the signals used on the auxiliary port.
| Pin | Signal | Direction | Description |
|---|---|---|---|
1 | Signal Ground | - | Signal Ground |
2 | TxD | ---> | Transmit Data |
3 | RxD | <--- | Receive Data |
4 | RTS | ---> | Request To Send (used for hardware flow control) |
5 | CTS | <--- | Clear To Send (used for hardware flow control) |
6 | DSR | <--- | Data Set Ready |
7 | Signal Ground | - | Signal Ground |
8 | CD | <--- | Carrier Detect (used for modem control) |
20 | DTR | ---> | Data Terminal Ready (used for modem control only) |
22 | RING | <--- | Ring |
The Ethernet port on the GRP has both a media independent interface (MII), 40-pin, D-shell type receptacle and a media dependent interface (MDI) RJ-45 receptacle that are capable of data transmission rates from 10 and 100 megabits per second (Mbps). (See Figure 3-15.)
Both the MII and RJ-45 receptacles support IEEE 802.3u Ethernet interfaces compliant with the 100Base-TX and 10Base-T standards. The MII receptacle requires an external transceiver that permits connection to multimode fiber for 100Base-FX or 100Base-T4 physical media. Only one Ethernet receptacle, either RJ-45 or MII, can be used at a time. Two LEDs on the GRP faceplate show which Ethernet receptacle is active.
Depending on the type of media you use between the MII receptacle and your switch or hub, the network side of your 100-Mbps transceiver should be appropriately equipped with ST-type connectors (for optical fiber), BNC connectors, and so forth.
Figure 3-16 shows the pin orientation of the female MII receptacle on the Ethernet port.
The MII receptacle uses 2-56 screw-type locks, called jackscrews, to secure the cable or transceiver to the MII port. MII cables and transceivers have knurled thumbscrews that you fasten to the jackscrews on the MII connector and tighten with your fingers. Use the jackscrews to secure your MII cable to the MII receptacle.
Table 3-3 lists the signals used on the MII receptacle, and Table 3-4 lists the signals used on the RJ-45 receptacle.
| Pin1 | In | Out | Input/Output | Description |
|---|---|---|---|---|
14-17 | - | Yes | - | Transmit Data (TxD) |
12 | Yes | - | - | Transmit Clock (Tx_CLK)2 |
11 | - | Yes | - | Transmit Error (Tx_ER) |
13 | - | Yes | - | Transmit Enable (Tx_EN) |
3 | - | Yes | - | MII Data Clock (MDC) |
4-7 | Yes | - | - | Receive Data (RxD) |
9 | Yes | - | - | Receive Clock (Rx_CLK |
10 | Yes | - | - | Receive Error (Rx_ER) |
8 | Yes | - | - | Receive Data Valid (Rx_DV) |
18 | Yes | - | - | Collision (COL) |
19 | Yes | - | - | Carrier Sense (CRS) |
2 | - | - | Yes | MII Data Input/Output (MDIO) |
22-39 | - | - | - | Common (ground) |
1, 20, 21, 40 | - | - | - | +5.0 volts (V) |
| 1Any pins not indicated are not used. 2Tx_CLK and Rx_CLK are provided by the external transceiver. |
| Pin | Signal |
|---|---|
1 | TX+ |
2 | TX- |
3 | RX+ |
4 | Termination Network |
5 | Termination Network |
6 | RX- |
7 | Termination Network |
8 | Termination Network |
Figure 3-17 shows the pin orientation of the female RJ-45 receptacle on the Ethernet port.
| Warning The ports labeled "Ethernet," "10BASE-T," "Token Ring," "Console," and "AUX" are safety extra-low voltage (SELV) circuits. SELV circuits should only be connected to other SELV circuits. Because the BRI circuits are treated like telephone-network voltage, avoid connecting the SELV circuit to the telephone network voltage (TNV) circuits. |
The alarm card has two, 25-pin D-sub connectors, labeled ALARM 1 and ALARM 2, mounted on the alarm card faceplate. (See Figure 3-18.)
The alarm card connectors enable you to connect the Cisco 12012 to a site alarm maintenance system. Critical, major, and minor alarms generated in the Cisco 12012 system are displayed by LEDs on the alarm card faceplate. The generated alarms also control alarm relays mounted on the alarm card. The alarm relay contacts are accessible through the two alarm card connectors.
Table 3-5 lists the available common, normally open, and normally closed relay contacts available through the alarm 1 and alarm 2 connectors.
| Pin Group | Common | Normally Open | Normally Closed |
|---|---|---|---|
Critical audible alarm | 2 | 1 | 14 |
Major audible alarm | 16 | 3 | 15 |
Minor audible alarm | 5 | 4 | 17 |
Critical visual alarm | 19 | 6 | 18 |
Major visual alarm | 8 | 7 | 20 |
Minor visual alarm | 22 | 9 | 21 |
Alarm input | 13 | 25 | - |
| Warning The ports labeled "Ethernet," "10BaseT," "Token Ring," "Console," and "AUX" are safety extra-low voltage (SELV) circuits. SELV circuits should only be connected to other SELV circuits. Because the BRI circuits are treated like telephone-network voltage, avoid connecting the SELV circuit to the telephone network voltage (TNV) circuits. |
Before you connect power or turn on power to the Cisco 12012, we strongly recommend that you provide an adequate system grounding (earth) connection for your system. Two system grounding receptacles are provided on each Cisco 12012. (See Figure 3-19.)
To ensure the system grounding connection that you provide is adequate, you will need the following parts:
Perform the following steps to attach the grounding lugs to the grounding receptacles on your Cisco 12012:
Step 1 Locate the grounding receptacles on your Cisco 12012. (See Figure 3-19.)
Step 2 Position one of the grounding lugs over the grounding receptacle holes.
Step 3 Insert the two bolts through the holes in the grounding lug. (See Figure 3-20.) Ensure that the grounding lug does not interfere with the other router hardware.
Step 4 Install the locking washers and nuts and tighten to secure the grounding lug to the frame.
Step 5 Prepare the other end of the grounding wire and connect it to the appropriate grounding point at your site to ensure an adequate ground.
Repeat Step 2 through Step 5 for the second system grounding connection.
This section provides procedures for installing an AC-input power supply and a DC-input power supply. Select the procedure appropriate for your system.
| Caution Do not mix AC-input and DC-input power supplies in a Cisco 12012. |
| Caution To maintain agency compliance requirements and meet EMI emissions standards in the Cisco 12012 with fewer than four AC-input power supplies or only one DC-input power supply, power supply blanks must be installed in any empty power supply bays. Do not remove a blank from the bay except to install a power supply. |
| Warning AC operation requires a minimum configuration of two AC-input power supplies. |
This section provides the procedure for reinstalling an AC-input power supply in the Cisco 12012. The Cisco 12012 power supply bays are labeled A1, A2, B1, B2 (from left to right). You should reinstall the AC-input power supplies in the bays in the following order: A1, B1, A2, and B2.
Perform the following steps to reinstall an AC-input power supply:
| Caution The AC-input power supply weighs 18 lb (8 kg). Use two hands when handling the power supply. |
Step 1 Attach an antistatic wrist strap to yourself and to one of the two ESD connection sockets located on the front edges of the upper card cage or to bare metal on the frame.
Step 2 Verify that the power supply power switch is in the STANDBY position.
| Caution To prevent damaging the power supply backplane connector, do not use excessive force when installing a power supply into the bay. |
Step 3 Using two hands to support and guide the power supply, slide it into the vacant bay. Push the power supply all the way into the bay until the faceplate is flush with the front of the bay.
Step 4 Tighten the captive screw on the power supply faceplate. (See Figure 3-21a.)
Step 6 Plug the AC power cord into the power supply AC receptacle. (See Figure 3-21b.)
Step 7 Clip the spring clip over the power cord plug to secure the plug in place. (See Figure 3-21c.)
Step 8 Connect the other end of the AC power cord to the source AC receptacle. (See Figure 3-21d.)
Step 9 Verify that the source AC circuit breaker servicing the source AC receptacle is switched on.
Repeat Step 2 through Step 9 for the rest of the AC-input power supplies.
This completes the Cisco 12012 hardware installation procedure.
Proceed to the next chapter for procedures for observing system startup and performing a basic configuration.
This section provides the procedures for reinstalling a DC-input power supply in the Cisco 12012. You must meet the following site power and source DC power cable requirements prior to installing the DC-input power supply:
The card cage assembly power supply bays are labeled A1, A2, B1, and B2 (from left to right). If your Cisco 12012 is configured with only one DC-input power supply, reinstall the power supply in power supply bays A1/A2. If your Cisco 12012 is configured with a second (redundant) DC-input power supply, reinstall it in power supply bays B1/B2.
Perform the following steps to reinstall a DC-input power supply:
| Caution The DC-input power supply weighs 19 lb (8.3 kg). Use two hands when handling the power supply. |
Step 2 Verify that the DC-input power supply power switch is turned OFF (O).
Step 3 Place the DC-input power supply faceplate-up, in front of the empty power supply bay.
Step 4 Loosen the two screws securing the power supply front cover in place. Lift up the cover slightly, then pull it away from the power supply faceplate. Set the front cover aside. (See Figure 3-23.)
Step 5 Remove the two screws that secure the source DC power cable bracket to the power supply faceplate and remove the bracket. (See Figure 3-23.) Set the two screws and bracket aside.
| Caution Before proceeding to the next step, verify that the source DC circuit breaker servicing the source DC power cable you are attaching to the DC-input power supply is in the OFF position. Also verify that the power switch on the DC-input power supply is OFF (O). As an additional check, measure the voltages across the DC power cable leads you intend to attach to the power supply. All readings should be zero volts. |
Step 6 Thread the source DC power cable leads up underneath the power supply handle. Allow sufficient slack in the power cable for strain relief.
| Warning When installing the unit, the ground connection must always be made first and disconnected last. |
Step 7 Remove the nut and locking washer from each of the six power supply threaded terminals on the front of the power supply. Attach the source DC power cable lug to the power supply terminal in the following order (see Figure 3-24):
Step 8 Thread the power supply circuit breaker external alarm leads (if present) up through the power supply handle and attach them to the circuit breaker alarm terminal block on the power supply faceplate. (Some sites might not be equipped with a power supply circuit breaker external alarm.)
Step 10 Place the DC power cable bracket over the power cable leads and secure the cable leads and the cable bracket to the power supply faceplate with the two screws that you removed earlier.
Step 11 Verify that the source DC wiring from the source DC breaker to the power supply is correct and that the terminal connections on the power supply are correct and tight.
Step 12 Position the power supply front cover so that the keyholes are over the two standoff screws on the power supply faceplate. Slide the cover down slightly to engage the two screws and secure it in place by tightening the two screws.
| Caution To prevent damaging the backplane power connector, do not use excessive force when sliding the power supply into the bay. |
Step 13 Using two hands to support and guide the power supply, align it with the grooves in the power supply bay, and slide the power supply into the vacant bay. (See Figure 3-25.) Push it into the bay until the power supply captive jackscrew makes contact with the power supply bay.
Step 14 Using a flat-blade screwdriver or 10-mm nutdriver, turn the captive jackscrew on the power supply faceplate clockwise (insert) to seat the power supply into the backplane power connector. Do not overtighten the jackscrew.
Repeat Step 2 through Step 14 for a second DC-input power supply, then proceed to Step 15.
Step 15 Turn on the source DC circuit breaker servicing each DC-input power supply. Do not turn on the DC-input power supply power switch at this time.
This completes the Cisco 12012 hardware installation procedure.
Proceed to the next chapter for procedures for observing system startup and performing a basic configuration.
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