Cisco 12008 Gigabit Switch Router Installation and Configuration Guide
Installing a Cisco 12008
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Installing a Cisco 12008

Table Of Contents

Installing a Cisco 12008

Installation Considerations

Installing the Mounting Brackets

Removing Components from the Router

Removing Cards from the Upper Card Cage

Removing a Power Supply from the Router

Rack-Mounting the Cisco 12008

Reinstalling Components in the Router

Reinstalling the Cards in the Upper Card Cage

Reinstalling the Power Supplies in the Router

Connecting the Line Card Cables

Connecting Route Processor Cables

GRP Console and Auxiliary Port Connection Equipment

GRP Console Port Signals

GRP Auxiliary Port Signals

GRP Ethernet Connection Equipment

PRP Console and Auxiliary Port Connection Guidelines

PRP Console Port Signals

PRP Auxiliary Port Signals

PRP Ethernet Connection Equipment

PRP Ethernet Connections

Connecting an External Alarm Monitoring Facility

Connecting System Ground

Connecting Source Power to the Power Supplies

Connecting Source Power to an AC-Input Power Supply

Connecting Source Power to a DC-Input Power Supply

Starting the Cisco 12008


Installing a Cisco 12008


This chapter presents the procedures for installing and starting the Cisco 12008. It contains the following sections:

Installation Considerations

Installing the Mounting Brackets

Removing Components from the Router

Rack-Mounting the Cisco 12008

Reinstalling Components in the Router

Connecting the Line Card Cables

Connecting Route Processor Cables

Connecting an External Alarm Monitoring Facility

Connecting System Ground

Connecting Source Power to the Power Supplies

Starting the Cisco 12008

Installation Considerations

The Cisco 12008 offers the following mounting options:

A 2-post, telco-style rack

A 4-post, full-height equipment rack

Shelf-top mounting

Freestanding system

The installation procedures presented in this chapter pertain only to the first two of these mounting options.

Before attempting to install your Cisco 12008, you should determine the mounting option that you intend to use. It is assumed that you have already moved the shipping pallet containing the router to the intended installation area.

Ensure that you have selected and prepared a compatible location for installing the router. Consider the following:

Will the selected location interfere with the flow of ambient cooling air through the router?

You must ensure at least 6 inches (15.2 cm) of clearance in the front and back of the router enclosure for the air intake and exhaust vents.

Does the selected location provide a temperature-controlled, air-conditioned, and dust-free operating environment?

Are the power cables and power supplies to be used with your router compatible with the source power available in the selected location?

Check the labels on the faceplate of the router's power supply(ies) and ensure that the source power available at the site is compatible.

Is the proper source voltage (AC or DC) available at the site?

Do you intend to install the router in a telco-style rack or a 4-post equipment rack?

Have you allowed sufficient access and clearance around the router enclosure to meet maintenance requirements?

You must allow at least 24 inches (61 cm) of clearance in front of the router enclosure for installing or replacing line cards, fan trays, and power supplies, and for attaching network interface cables or equipment.


Caution   
You cannot use an AC-input power supply and a DC-input power supply in the same router. All power supplies installed in a router must be of the same type. Do not attempt to install an AC-input power supply in a router with a DC-input power supply, or vice versa.

Installing the Mounting Brackets

Mounting brackets are shipped with every Cisco 12008 as part of an accessory kit. These mounting brackets are designed for use with either a telco-style (2-post) or a 4-post equipment rack. For simplicity, the procedure in this section describes the use of the mounting brackets in conjunction with a telco-style rack.

Use of the mounting brackets is optional; you can install the Cisco 12008 in the rack without using these brackets. However, due to the size and weight of the router, it is recommended that these brackets not only be used, but also that two or more people install the router to minimize the risk of personal injury or damage to the equipment.


Note   The mounting brackets temporarily bear the weight of the router while it is being positioned in the rack for permanent installation. These brackets can be left in place following router installation.


To prepare for router installation, you can install the mounting brackets directly opposite each other in the rack at any desired height. The height chosen should take into account the following factors:

The network cabling and equipment installation requirements

Whether or not other equipment is (or will be) installed in the rack

Whether or not more than one router will be installed in the rack

You can install a single Cisco 12008 at any height in the rack, or you can "stack" as many as three routers in the rack to make maximum use of available rack space. Each installed router requires 25 inches of rack space (63.5 cm). The height of each router is 24.85 inches (63.1 cm), leaving a minimum of tolerance between each rack-mounted router.

In all cases, you should consider current and future equipment needs in determining the appropriate height for installing your router, while at the same time attempting to maintain as low a center of gravity as possible for all rack-mounted equipment.

If you choose not to install the mounting brackets, proceed to the following section entitled "Removing Components from the Router."

To install the mounting brackets (see ), perform the following steps:


Step 1 Determine the proper height to install the mounting brackets in the rack.

To promote rack stability and a low center of gravity once the router is installed, attach the mounting brackets at the minimum practical height suitable to your equipment and cabling requirements.

Step 2 Position a mounting bracket on one of the posts at the desired level.

The mounting bracket is designed in a way that enables one of the lowest three holes in the bracket to match a hole in the mounting posts of the rack; the same is true for the highest three holes in the mounting bracket. Thus, you can secure the mounting bracket to the mounting post in the rack with two screws.

Step 3 Secure the bracket to the post using two screws provided in the accessory kit.

Step 4 Repeat Step 2 and Step 3 to secure a second mounting bracket on the opposite post, making sure that both brackets are installed at the same height.


Note   If you intend to mount the router in a 4-post equipment rack, you have the option to install four mounting brackets on the posts. In this case, you can follow the general procedure outlined above to install the two additional mounting brackets.


Figure 3-1 Installing the Mounting Brackets (Telco-Style Rack Shown)

Removing Components from the Router

For the procedures in this section, it is assumed that you have unpacked the router, as instructed in the document Cisco 12008 Gigabit Switch Router System Packing and Unpacking Instructions posted on the outside of the shipping container.

It is assumed further that you have positioned the router near the intended installation site and that you have accomplished all other preparatory installation tasks, as described in Chapter 2, "."

A Cisco 12008 arrives in its shipping container configured as ordered, complete with power supplies and circuit boards. Since even a minimally configured system is quite heavy, it is strongly recommended that you remove the following components from the router before attempting to install it in a rack:

Installed circuit boards in the upper card cage—Each circuit board and its associated card carrier weigh approximately 10 lb (4.54 kg).

Installed power supply(ies)—The AC-input power supply weighs approximately 17 lb (7.73 kg); the DC-input power supply weighs approximately 14 lb (6.36 kg).

The card cage fan tray (12 lb), the power supply fan tray (2 lb), and the SFCs (2 lb each) in the lower card cage (if installed) contribute approximately 20 lb (9.1 kg) to the overall weight of the router; these components can be removed from the router at the discretion of the installer prior to mounting the router in the rack.

Removing Cards from the Upper Card Cage

The upper card cage, which forms an integral part of the router enclosure (see ), houses the following router components:

One Route Processor (RP)

One or two clock and scheduler cards (CSCs)

Up to seven Cisco 12000 series line cards of any type and in any combination

This section contains procedures for removing these cards from the upper card cage preparatory to mounting the router enclosure in a rack.


Caution   
As you remove the cards from the upper card cage, place them on antistatic mats for ESD protection until they are reinstalled in the router.


Note   Each line card has a vertical cable-management bracket affixed to it that enables you to neatly "dress" the network interface cables attached to line card ports. Leave this bracket in place when removing the line cards from the router. The RP and the CSC do not require vertical cable-management brackets.


To remove a card from the upper card cage, perform the following steps:


Step 1 Attach an antistatic ESD wrist strap to your wrist; ensure that it makes good contact with your skin.

Step 2 Insert the equipment end of the wrist strap (the banana jack) into the ESD connection socket near the lower left corner of the upper card cage. shows the location of this socket in the body of the router enclosure.

Step 3 Proceeding from left to right for all of the installed cards in the upper card cage, write down each card's type and its location in the card cage.

Step 4 Starting with the left-most card, loosen the two captive installation screws located at the top and bottom of the card (see a).

Step 5 Pivot the two card ejector levers away from the faceplate to unseat the card from the backplane (see b).

Step 6 Touching only the metal card carrier and the card faceplate, slide the card out of its slot (see c) and carefully place it (component side up) on an antistatic mat for ESD protection.


Note   You need not remove any line card blanks that are installed in the upper card cage.


Go back to Step 3 and repeat the procedure as many times as necessary to completely depopulate the upper card cage. Stack the removed cards on the antistatic mat in their order of removal, thus leaving them properly ordered for later reinstallation.

Figure 3-2 Removing Cards from the Upper Card Cage (CSC Shown)

Removing a Power Supply from the Router

The router is shipped with all the circuit boards and the AC-input or the DC-input power supply(ies) already installed, as ordered, but without any cables connected.

To remove a power supply from the router, perform the following steps:


Step 1 Set the rotary power switch on each power supply, as follows:

For an AC-input power supply—Set the switch to the Standby position.

For a DC-input power supply—Set the switch to the OFF (O) position.


Note   Turning the rotary power switch to the Standby position on the AC-input power supply is equivalent to setting the same switch on the DC-input power supply to the OFF position. In either case, turning the rotary power switch to the full counterclockwise position releases a mechanical interlock (latching mechanism), enabling you to remove the unit from the bay.


Step 2 Using a flat-blade screwdriver, turn the captive installation screw on the power supply faceplate counterclockwise until it is freed from the sheet metal flange of the power supply bay.

Step 3 Grasp the power supply carrying handle with one hand and pull the unit halfway out of the bay (see ).


Caution   
Use both hands in removing a power supply.

Step 4 Place your free hand beneath the power supply to support its weight and slide the unit completely out of the bay.

Step 5 Set the power supply aside temporarily until you are ready to reinstall it following completion of the rack-mounting procedure described in the following section entitled "Rack-Mounting the Cisco 12008."

Go back to Step 1 and repeat the procedure to remove the second power supply, if one is present.

Figure 3-3 Removing a Power Supply from the Router


Note   If you ordered your system with a single AC-input or DC-input power supply, the system arrives with a power supply blank installed in the vacant power supply bay. Do not remove this blank panel in preparing to rack-mount the router.


If you intend to use your router with a single power supply of either type, the power supply blank must remain in place at all times for EMI compliance and to ensure that cooling air flows properly through the router.

Rack-Mounting the Cisco 12008

This section presents the procedures for mounting the Cisco 12008 in a rack.

For the purposes of this procedure, it is assumed that you have installed the two mounting brackets in a telco-style rack at the desired height in preparation for installing the router (see the earlier section entitled "Installing the Mounting Brackets"). It is also assumed that you have removed the power supplies and all of the components in the upper card cage to minimize the weight of the router.


Caution   
The Cisco 12008, including the backplane, the power supply fan trays, and the SFCs (if installed), weighs approximately 75 pounds (34.1 kg). For safety, a minimum of two people should install the router in the rack. To prevent injury when lifting the router, keep your back straight and lift with your legs.

To remove the router from the shipping pallet and mount it in a rack, perform the following steps:


Step 1 Remove the four lag screws and retainer clips that secure the router to the shipping pallet.

Step 2 Affix the two lifting handles provided in the accessories box to the sides of the router enclosure, as shown in .

Step 3 With one person standing at either side of the router, grasp the lifting handle affixed to the side of the router and lift the router off the shipping pallet.

Step 4 With the assistance of a third person, position the router in the rack. Temporarily rest the weight of the router on the mounting brackets (see ).

Figure 3-4 Lifting Handles for the Cisco 12008


Note   If you did not install the optional mounting brackets in the rack, two people must support the weight of the router while holding it in position for installation; a third person must then secure the router in the rack using the screws provided in the accessories box.


Figure 3-5 Installing the Router in the Rack

Step 5 Remove the two lifting handles from the side panels of the router before attempting to slide the router into the rack.

Step 6 Slide the router into the rack until the rack-mounting flanges on each side of the router rest against the rack-mounting posts.

Adjust the position of the router slightly, as necessary, to align two holes at both the top and the bottom of each rack-mounting flange on the router with corresponding holes in each mounting post.

In standard EIA and telco-style racks, the holes in each mounting post should align with the holes in each rack-mounting flange on the router, as follows:

The pattern of holes at the top of the left and the right router mounting flanges should match at least two holes in each of the two mounting posts.

The pattern of holes at the bottom of the left and the right router mounting flanges should match at least two holes in each of the two mounting posts.

Thus, to properly secure the router to the mounting posts in a telco-style rack, you should use a total of 8 screws—four per mounting flange.

Step 7 Secure the router to the mounting posts using the screws provided in the accessories box.

Reinstalling Components in the Router

This section presents the procedures for reinstalling the components removed from the router in preparation for rack mounting the chassis.

Reinstalling the Cards in the Upper Card Cage

Before attempting to reinstall the cards in the upper card cage, refer to the notes you made when you depopulated the upper card cage (see Step 3 in the section entitled "Removing Cards from the Upper Card Cage").

To replace a card in the upper card cage, perform the following steps:


Step 1 Attach an antistatic ESD wrist strap to your wrist; ensure that it makes good contact with your skin.

Step 2 Insert the equipment end of the wrist strap (the banana jack) into the ESD connection socket near the lower left corner of the upper card cage. shows the location of this socket in the body of the router enclosure.

Step 3 Select the top card from the antistatic mat. It is assumed that you will reinstall the cards in the upper card cage in reverse order. That is, the top card that you placed earlier on the antistatic mat should be the first card to be reinstalled in the router (see Step 6 in the section entitled "Removing Cards from the Upper Card Cage").

Step 4 Grasp the front edge of the metal card carrier with one hand and place your other hand under the carrier to support the card's weight and guide it into the card cage slot.


Note   Alignment grooves at the top and bottom of each slot in the upper card cage help you to align the cards properly for insertion. Make sure you properly align the card carrier with these alignment grooves to facilitate card insertion.


Step 5 Carefully slide the card carrier into the slot until the ejector levers make contact with the top and bottom edges of the card cage.

Step 6 Grasp the line card ejector levers and pivot them toward the card faceplate until they are perpendicular to the faceplate. This action completely seats the card in the backplane.

Step 7 Tighten the two captive installation screws at the top and bottom of the card faceplate.

Go back to Step 3 and repeat the procedure until you have fully repopulated the upper card cage with the previously removed cards.


Note   Card blanks must be installed in the upper card cage to cover any unoccupied slots. The card blanks help to maintain proper air flow through the router and ensure EMI compliance.


Reinstalling the Power Supplies in the Router

In this section, it is assumed that you will be reinstalling a power supply that you removed from the power supply bay in preparation for rack mounting the router (see the section entitled "Removing a Power Supply from the Router"). It is also assumed that the router has been mounted in the rack and that you are reinstalling the previously removed components.

The process of reinstalling a power supply is the reverse of the removal procedure depicted in .

To reinstall a power supply that was removed prior to rack mounting the router, perform the following steps:


Step 1 Verify that the rotary power switch on the power supply to be reinstalled is set, as follows:

For an AC-input power supply—Set to the Standby position.

For a DC-input power supply—Set to the OFF position.


Note   Turning the rotary power switch to the Standby position for the AC-input power supply is operationally equivalent to setting the same switch on the DC-input power supply to the OFF position. In either case, turning the rotary power switch to the full counterclockwise position retracts a mechanical interlock into the body of the power supply, thus enabling you to insert the power supply into the power supply bay.


Step 2 Grasp the power supply carrying handle with one hand.


Caution   
The AC-input power supply weighs 17 lb (7.72 kg); the DC-input power supply weighs 14 lb (6.36 kg). Use both hands when handling these units.

Step 3 While lifting the power supply by its carrying handle, place your free hand beneath the unit to support its weight.

Step 4 Position the power supply appropriately for insertion into the power supply bay.


Note   If you are reinstalling only a single AC-input or DC-input power supply, it is recommended that you install the unit in the bottom bay.


Step 5 Gently slide the power supply into the bay until its faceplate meets the sheet metal flange of the power supply bay.

This action engages the blind mating connector at the rear of the power supply with its companion backplane connector.


Caution   
To prevent damage to the backplane, do not use excessive speed or force when sliding the power supply into the bay.

Step 6 Using a flat-blade screwdriver, turn the captive installation screw on the power supply faceplate clockwise until it is tight, thus securing the power supply in the bay.

Connecting the Line Card Cables

This section presents the procedures for installing the network interface cables in the cable-management system and attaching the cables to the appropriate line card ports.

The cable-management system consists of two components:

A horizontal cable-management tray that is mounted directly above the upper card cage

A vertical cable-management bracket that is attached to each line card

Additional line card installation information is contained in the configuration note that accompanies each line card that is shipped from the factory as an installed component or that is ordered and shipped separately as an FRU.

For example, for additional line card information, you can consult the appropriate configuration note(s) for the line card(s) installed in your router, as outlined below:

Quad OC-3c/STM-1c Packet-Over-SONET (POS) line card—Refer to the document entitled Quad OC-3c/STM-1c Packet-Over-SONET Line Card Installation and Configuration (document number 78-4333-02).

OC-12c/STM-4c Packet-Over-SONET (POS) line card—Refer to the document entitled OC-12c/STM-4c Packet-Over-SONET Line Card Installation and Configuration (document number 78-4341-02).

OC-12c/STM-4c Asynchronous Transfer Mode (ATM) line card—Refer to the document entitled OC-12c/STM-4c Asynchronous Transfer Mode Line Card Installation and Configuration (document number 78-4344-02).

To install the network interface cables in the cable-management system and connect the cables to the line cards, perform the following steps:


Step 1 Attach an antistatic ESD wrist strap to your wrist; ensure that it makes good contact with your skin.

Step 2 Insert the equipment end of the wrist strap (the banana jack) into the ESD connection socket near the lower left corner of the upper card cage. shows the location of this socket in the body of the router enclosure.

Step 3 Beginning with the left-most line card in the upper card cage, identify the interface cables that attach to this line card.

Step 4 Select one interface cable at a time and carefully route it through the left end of the horizontal cable-management tray and down through the vertical cable-management bracket to the appropriate line card port.


Note   On multiport line cards, the interface cables should be routed down through the vertical cable-management bracket to the appropriate ports on the card faceplate, starting with the bottom port and working upward.


Step 5 Starting with the bottom port (on multiport line cards only), connect the interface cable to the port (see a).

Step 6 Carefully press the interface cable into the cable keeper clip nearest the port of connection (see b).

Make sure that you do not introduce any sharp bends or kinks into the cable in securing the cable to the keeper clip.

Step 7 Carefully press the cable into the bottom of the raceway in the vertical cable-management bracket (see c).

Again, make sure that you do not introduce any kinks or sharp bends in the interface cable. The cable should lie in the bottom of the raceway without slack.

Step 8 Repeat the procedure in Step 4 through Step 7 for the remaining ports on the left- most line card.

Figure 3-6 Attaching Network Interface Cable to Line Card (Cisco 12012 Shown)

When you have completed installing the network interface cables on the left-most line card, proceed to the next card in turn in the upper card cage. Repeat this procedure until you have installed all of the network interface cables on all of the line cards present in the upper card cage.

Connecting Route Processor Cables

The console and auxiliary ports for the Cisco 12008 are located on the RP. The GRP has an optional Ethernet port and the PRP has two Ethernet ports. This section contains connection equipment and pinout information for the console, auxiliary, and Ethernet ports on the GRP and PRP.

GRP Console and Auxiliary Port Connection Equipment

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 12008. 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 12008 (see ).

Figure 3-7 Console and Auxiliary Port Connections


Note   The console and auxiliary ports are asynchronous serial ports; any devices connected to these ports must be capable of asynchronous transmission. (Asynchronous is the most common type of serial device; for example, most modems are asynchronous devices.)



Note   In order to maintain Class B EMI compliance, shielded cables must be used on the console and auxiliary ports of the GRP= and GRP-B=. An updated version of the GRP-B= board (Rev. F0) is available. This version does not require shielded cables for Class B compliance.


Before connecting a terminal to the console port, check your terminal's documentation to determine the baud rate of the terminal you plan to use. The baud rate of the terminal must match the default rate (9600 baud). Set up the terminal as follows: 9600 baud, 8 data bits, no parity, 2 stop bits (9600 8N2). You need an EIA/TIA-232 DCE console cable to connect the terminal to the console port. Cisco Systems does not provide console and auxiliary port cables; cables are available from commercial sources.


Note   You must provide the EIA/TIA-232 cables to connect the terminal to the GRP console port or other devices to the auxiliary port. Cisco Systems does not provide console and auxiliary port cables; cables are available from other vendors. For compliance with GR-1089 (intra-building surge), you must use shielded cables on the GRP console and auxiliary ports.

Because the connectors on some standard cables are tall enough to interfere with the front covers installed on the card cages, Cisco includes a lower-profile cable adapter that permits you to connect a flat cable with modular RJ-45 plugs to the GRP console port.


For console and auxiliary port pinouts, refer to and , respectively.

GRP Console Port Signals

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

Table 3-1 GRP Console Port Signals

Pin
Signal
Direction
Description

1

GND

-

Ground

2

TxD

Output

Transmit Data

3

RxD

Input

Receive Data

6

DSR

Input

Data Set Ready (always on)

7

GND

-

Ground

8

DCD

Input

Data Carrier Detect (always on)

20

DTR

Output

Data Terminal Ready


GRP Auxiliary Port Signals

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 12008. 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 . Table 3-2 lists the signals used on the auxiliary port.

Table 3-2 Auxiliary Port Signals

Pin
Signal
Direction
Description

1

Signal Ground

-

Signal Ground

2

TxD

Output

Transmit Data

3

RxD

Input

Receive Data

4

RTS

Output

Request To Send (used for hardware flow control)

5

CTS

Input

Clear To Send (used for hardware flow control)

6

DSR

Input

Data Set Ready

7

Signal Ground

-

Signal Ground

8

CD

Input

Carrier Detect (used for modem control)

20

DTR

Output

Data Terminal Ready (used for modem control only)

22

RING

Input

Ring


GRP Ethernet Connection Equipment

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 .)


Note   At the auto-sensed data transmission rate of 100 Mbps, the Ethernet port provides maximum usable bandwidth that is less than 100 Mbps; a maximum usable bandwidth of approximately 20 Mbps should be expected from either the RJ-45 or MII connections. Transmission speed is determined by the network to which the Ethernet interface is connected and is not user-configurable.


Figure 3-8 RJ-45 and MII Ethernet Connections

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.


Note   The Ethernet port can use either unshielded twisted-pair or screened twisted-pair cables. In sites where extremely high immunity to noise is required, screened twisted-pair cable is recommended.


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.

shows the pin orientation of the female MII receptacle on the Ethernet port.

Figure 3-9 Ethernet MII Receptacle

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.

Table 3-3 Ethernet MII Pinout 

Pin 1
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)

1 Any pins not indicated are not used.

2 Tx_CLK and Rx_CLK are provided by the external transceiver.


Table 3-4 Ethernet RJ-45 Pinout

Pin
Signal

1

TX+

2

TX-

3

RX+

4

Termination Network

5

Termination Network

6

RX-

7

Termination Network

8

Termination Network


shows the pin orientation of the female RJ-45 receptacle on the Ethernet port.

Figure 3-10 Ethernet RJ-45 Receptacle


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.


PRP Console and Auxiliary Port Connection Guidelines

The system console port on the PRP is a DCE RJ-45 receptacle for connecting a data terminal, which you must configure. The console port is labeled Console, as shown in . Before connecting the console port, check your terminal's documentation to determine the baud rate of the terminal you plan to use.

The baud rate of the terminal must match the default baud rate (9600 baud). Set up the terminal as follows: 9600 baud, 8 data bits, no parity, and 2 stop bits (9600, 8N2). The console port requires a straight-through RJ-45 cable.

Figure 3-11 PRP Console and Auxiliary Port Connections

1

Modem

4

Auxiliary port

2

Console terminal

5

Console port

3

RJ-45 Ethernet cables

   


Note   The console and auxiliary ports are both asynchronous serial ports; any devices connected to these ports must be capable of asynchronous transmission. (Asynchronous is the most common type of serial device; for example, most modems are asynchronous devices.)


PRP Console Port Signals

The console port on the PRP is a DCE RJ-45 receptacle. lists the signals used on this port.

Table 3-5 PRP Console Port Signals

Console Port Pin
Signal
Input/Output
Description

11

2

DTR

Output

Data Terminal Ready

3

TxD

Output

Transmit Data

4

GND

Signal Ground

5

GND

Signal Ground

6

RxD

Input

Receive Data

7

DSR

Input

Data Set Ready

81

1 These pins are not connected.


PRP Auxiliary Port Signals

The auxiliary port on the PRP is a DTE, RJ-45 plug for connecting a modem or other DCE device (such as a CSU/DSU or another router) to the router. The port is labeled Aux, as shown in . The asynchronous auxiliary port supports hardware flow control and modem control. lists the signals used on the auxiliary port.

Table 3-6 PRP Auxiliary Port Signals 

Auxiliary Port Pin
Signal
Input/Output
Description

1

RTS

Output

Request To Send

2

DTR

Output

Data Terminal Ready

3

TxD

Output

Transmit Data

4

GND

Signal Ground

5

GND

Signal Ground

6

RxD

Input

Receive Data

7

DSR

Input

Data Set Ready

8

CTS

Input

Clear To Send


PRP Ethernet Connection Equipment

There are two RJ-45 Ethernet interface receptacles on the PRP, providing media-dependent interface (MDI) Ethernet ports. These connections support IEEE 802.3 and IEEE 802.3u interfaces compliant with 10BASE-T and 100BASE-TX standards. The transmission speed of the Ethernet ports is auto-sensing by default and is user configurable.

The RJ-45 receptacles on the PRP provide two physical connection options for Ethernet interfaces. RJ-45 cables are not available from Cisco Systems; they are available from outside commercial cable vendors. To connect cables to the PRPs Ethernet interfaces (ports labeled ETH0 and ETH1), attach the Category 5 UTP cable directly to a RJ-45 receptacle on the PRP.

The Ethernet interfaces on the PRP are end-station devices, not repeaters; therefore, you must connect an Ethernet interface to a repeater or hub.


Note   Only connect cables that comply with EIA/TIA-568 standards. (See and for cable recommendations and specifications.)



Caution   
The Ethernet ports are primarily used as a Telnet port into the Cisco 12000 series Internet Router, and for booting or accessing Cisco IOS software images over a network to which an Ethernet port is directly connected. Cisco Express Forwarding (CEF) functions are switched off by default for security reasons. Cisco strongly cautions you to consider the security implications of switching on CEF routing functions on these ports.

shows an example of the functionality of an Ethernet port. In this example, you cannot access Network 2.0.0.0 via the Ethernet port (ETH0) on the PRP in Router A; you can only access the hosts and Router C, which are in Network 1.0.0.0. (See dotted arrows in .)

To access Network 2.0.0.0 from Router A, you must use an interface port on one of your line cards (in this example, a Packet-over-SONET (POS) line card in Router A) to go through Router B, through Router C, and into Network 2.0.0.0. (See solid arrows in .)

Figure 3-12 Using the Ethernet Port on the PRP

PRP Ethernet Connections

shows a PRP RJ-45 receptacle and cable connectors. The RJ-45 connection does not require an external transceiver. The RJ-45 connection requires Category 5 unshielded twisted-pair (UTP) cables, which are not available from Cisco Systems, but are available from commercial cable vendors. lists the pinout for the RJ-45 receptacle.

Figure 3-13 RJ-45 Receptacle and Plug (Horizontal Orientation)

1

RJ-45 receptacle

2

Category 5 UTP cable with plug



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.


Table 3-7 PRP RJ-45 Ethernet Receptacle Pinout

Ethernet Port Pin
Signal
Description

1

TxD+

Transmit data +

2

TxD-

Transmit data -

3

RxD+

Receive data +

4

Termination Network

No connection

5

Termination Network

No connection

6

RxD-

Receive data -

7

Termination Network

No connection

8

Termination Network

No connection


Depending on your RJ-45 cabling requirements, use the cable pinouts shown in or .

Figure 3-14 Straight-Through Cable Pinout (Connecting MDI Ethernet Port to MDI-X Wiring)

Figure 3-15 Crossover Cable Pinout (for Connecting Two PRPs)

lists the cabling specifications for 100-Mbps transmission over unshielded twisted-pair (UTP) cables.


Note   The transmission speed of the Ethernet ports is auto-sensing by default and is user configurable.


Table 3-8 Specifications and Connection Limits for 100-Mbps Transmission 

Parameter
RJ-45

Cable specification

Category 51 UTP, 22 to 24 AWG2

Cable length (max)

Segment length (max)

328 feet (100 m) for 100BASE-TX

Network length (max)

656 feet (200 m)3 (with 1 repeater)

1 EIA/TIA-568 or EIA-TIA-568 TSB-36 compliant. Not supplied by Cisco.

2 AWG = American Wire Gauge. This gauge is specified by the EIA/TIA-568 standard.

3 This length is specifically between any two stations on a repeated segment.


lists IEEE 802.3u physical characteristics for 100BASE-TX.

Table 3-9 IEEE 802.3u Physical Characteristics

Parameter
100BASE-TX

Data rate (Mbps)

100

Signaling method

Baseband

Maximum segment length

100 m between DTE1 and repeaters

Media

Category 5 UTP (for RJ-45)

Topology

Star/Hub

1 DTE = data terminal equipment.


Connecting an External Alarm Monitoring Facility

The clock and scheduler card (CSC) incorporates a 25-pin D-sub connector on the card faceplate (see ) that enables you to attach a site-wide external alarm monitoring facility to the Cisco 12008. This facility is described in Chapter 1 in the section entitled "Housekeeping and Alarm Monitoring Functions of the CSC."

The alarm signals sent to this DB-25 connector correspond to those sent to the system alarm LEDs on the CSC faceplate (see ). Thus, a critical, major, or minor alarm condition detected in the router can trigger a simultaneous fault indication in some or all of the following ways:

System alarm LEDs—The three system alarm LEDs on the CSC faceplate constitute the standard method of alarm notification in the router.

These LEDs indicate router status at all times, but you must directly observe these LEDs to become aware of a router alarm condition. Thus, these LEDs provide only a passive alarm notification capability.

External alarm monitoring facility—By equipping your router with a telco-style external alarm monitoring facility, you can provide a more overt indication of router status.

For example, the same alarm signal that illuminates one of the three system alarm LEDs on the CSC faceplate for a critical, major, or minor alarm condition is also sent to the DB-25 connector by means of an associated alarm relay in the CSC.

An external alarm monitoring facility uses this signal to activate a visible alarm (such as a flashing light) or an audible alarm (such as a Klaxon) that immediately alerts site personnel to the existence of a router alarm condition.

Figure 3-16 DB-25 Connector and System Alarm LEDs on the CSC

shows an expanded view of the DB-25 connector on the CSC faceplate.

Figure 3-17 Expanded View of the DB-25 Connector

Table 3-10 lists the common, normally open, and normally closed relay contacts accessible to an external alarm monitoring facility by means of the DB-25 connector.

Table 3-10 DB-25 Connector Pinout Assignments

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 visible alarm

19

6

18

Major visible alarm

8

7

20

Minor visible alarm

22

9

21

Alarm input

13

25

 


Note   Only safety extra-low voltage (SELV) circuits can be connected to the DB-25 connector. The maximum current rating for the DB-25 connector is 1A at 60 VDC.


Connecting System Ground

This section presents the procedures for connecting the Cisco 12008 to earth ground. It is strongly recommended that you complete this procedure before connecting system power or turning on your router.

shows the location of the grounding holes on the side panel of the router. Matching holes appear in the opposite side panel, enabling you to attach the grounding cable to either one side of the router or the other, but not both.

To ensure that the system grounding connection is adequate, you need the following parts and tools:

Two 2-hole grounding lugs—These grounding lugs must have two M6 (metric) screw holes centered 0.625-inch to 0.75-inch apart and have a wire receptacle large enough to accommodate the recommended 4-AWG, multistrand, copper wire.

The grounding lugs can be similar to the terminals used with the source DC power cables for the DC-input power supply (see ).

These grounding lugs are not available from Cisco Systems; they are common items that can be obtained from any electrical equipment vendor, such as Panduit.

Four Phillips head, M6 (metric) machine screws with locking washers and nuts—This mounting hardware is not available from Cisco Systems; it can be obtained readily from any commercial electrical equipment vendor.

Two grounding wires—It is recommended that you use 4 AWG, 0.204-inch (5.18-mm) diameter wire for grounding purposes. However, you may use a grounding wire of smaller gauge. The actual wire diameter and length depend on your router location and the installation environment.

This grounding wire is not available from Cisco Systems; it is commonly available from commercial cable vendors.

Number 2 Phillips head screwdriver.

A 1/4-inch flat-blade screwdriver (to loosen/tighten the captive installation screws at the bottom of the rear access cover of the router)

Crimping tool—This tool must be large enough to accommodate the girth of the grounding lug when you crimp the grounding cable into the lug.

Wire stripping tool.

To attach the grounding lug and cable to the grounding receptacle on the Cisco 12008, perform the following steps:


Step 1 Use a wire-stripping tool to remove approximately 0.75 inch (19 mm) of the covering from the end of the grounding wire.

Step 2 Insert the stripped end of the grounding wire into the open end of the grounding lug.

Step 3 Use the crimping tool to secure the grounding wire in place in the grounding lug.

Step 4 Using a 1/4-inch flat-blade screwdriver, remove the rear access cover of the router. To do so, loosen the two captive installation screws at the bottom of the cover; pivot the cover up and away from the router to release the three access cover tabs from their slots. Set the access cover aside temporarily.

Step 5 Locate the grounding receptacle on the side panel of the router (see ).

Figure 3-18 Connecting System Ground on the Cisco 12008

Step 6 Place the grounding lug against the grounding receptacle on the side panel of the router.

Step 7 Insert two screws through the holes in the grounding lug and the grounding receptacle. Ensure that the grounding lug will not interfere with other router hardware or rack equipment.

Step 8 Install the locking washers and nuts; tighten them to secure the grounding lug to the grounding receptacle.

Step 9 Reinstall the rear access cover on the router. To do so, insert the three tabs of the access cover into their corresponding slots in rear of the router enclosure; pivot the cover downward until it rests against the bottom of the router enclosure. Using a 1/4-inch flat-blade screwdriver, tighten the two captive installation screws in the bottom of the rear cover to securely fasten the cover in place.


Note   If you remove the rear access cover temporarily for any reason, be sure you reinstall it and secure it in place by firmly tightening the captive installation screws with a screwdriver. Doing so prevents casual removal of the access cover without the use of a tool.


Step 10 Prepare the other end of the grounding wire and connect it to an appropriate grounding point in your site to ensure adequate earth ground for the router.

Connecting Source Power to the Power Supplies

This section presents the procedures for applying source power to either an AC-input power supply or a DC-input power supply. It is assumed that you have already installed one or two AC-input power supplies or one or two DC-input power supplies, and that your task now is to connect source power to them.


Note   You should not install two power supplies of either type unless you intend to use both units. In other words, you should not install two power supplies and power the router with only one of the units. Powering the router with a single power supply while using the other bay to "store" an inert unit may disrupt the normal flow of cooling air through the power supply bays.


Depending on the power supply type installed in your router, refer to one of the two following sections for instructions on connecting source power to the power supply.


Note   Detailed instructions for installing or replacing power supplies are also contained in the configuration notes entitled Cisco 12008 Gigabit Switch Router AC-Input Power Supply Replacement Instructions (document number 78-4954-01) and Cisco 12008 Gigabit Switch Router DC-Input Power Supply Replacement Instructions (document number 78-4955-01). A configuration note accompanies each power supply that is ordered and shipped from the factory as a field-replaceable unit (FRU). These configuration notes are also available on the Cisco Documentation CD and on Cisco Connection Online (CCO).


Connecting Source Power to an AC-Input Power Supply

In the following procedure, you are assumed to have an AC-input power supply already installed in your router; you need to connect it to an AC power source. If an AC-input power supply is not already installed, perform the procedures in the earlier section entitled "Reinstalling the Power Supplies in the Router" before attempting to connect source AC power to the unit.

If you equip your router with a single AC-input power supply, install it in the bottom power supply bay.


Note   All electrical connections between the power supply and the backplane are accomplished automatically when the power supply is installed in the power supply bay.


To connect source power to an AC-input power supply, perform the following steps:


Step 1 Verify that the rotary power switch on the power supply is in the Standby (OFF) position.


Note   A power supply bay not occupied by a power supply must have a power supply blank installed for EMI compliance and to ensure proper airflow through the router.


Step 2 Locate the AC power cord shipped with your system and verify that it is the correct type for your particular site.

For this purpose, refer to the section in Chapter 2 entitled "AC-Powered Systems."


Note   If the proper power cord was not shipped with your system, contact your service representative.


Step 3 First ensure that the bail latch is pushed down; then plug the AC power cord into the AC receptacle on the power supply faceplate (see ).


Note   If you have a redundant AC-input power supply configuration, we recommend that you connect each power supply to an independent AC power source and install an uninterruptable power source (UPS) in your site to protect your router against power failure. Each AC-input power supply operating between 200 VAC and 240 VAC requires a dedicated 20A service.


Step 4 Position the bail latch over the power cord plug by pulling the latch up and over the plug to secure the plug in the AC receptacle on the power supply faceplate (see ).

Step 5 Connect the other end of the AC power cord to the source AC outlet for your site (see ).

Step 6 Go back to Step 1 and repeat the procedure to connect source AC power to the second (redundant) AC-input power supply, if one is present.


Caution   
At this time, do not turn the rotary power switch to the ON (|) position on either a single or a redundant AC-input power supply.

Figure 3-19 Connecting a Source AC Power Cord to an AC-Input Power Supply

Step 7 Turn on the source AC circuit breaker that services the AC-input power supply(ies).

Before applying power to your Cisco 12008, go to the section entitled "Starting the Cisco 12008."

Connecting Source Power to a DC-Input Power Supply

In the following procedure, you are assumed to have a DC-input power supply already installed in your router; you need to connect it to a DC power source. If a DC-input power supply is not already installed, perform the procedures in the earlier section entitled "Reinstalling the Power Supplies in the Router" before attempting to connect source DC power to the unit.

If you equip your router with a single DC-input power supply, install it in the bottom power supply bay.


Note   An unoccupied power supply bay must have a power supply blank installed to ensure EMI compliance and the proper flow of cooling air through the router.


Before attempting to connect your DC-input power supply to a DC power source, ensure that your site meets the following requirements:

DC power service—A dedicated 40A service must be available for each DC-input power supply.

Power cables (three per power supply)—The power cables must have the following characteristics:

Size—4 AWG (recommended)

Diameter—0.204-inch (5.18-mm)

Construction—High-strand-count copper wire

The length of the power cable depends on the location of your router within the site and the proximity of source DC power to the router.

Power lugs (one for each of the three power cables)—The lugs for the power cables must have the following characteristics:

Contain dual holes centered 0.625-inch apart

Be able to fit over M6 (metric) threaded terminal studs on the router faceplate

Be made of copper (not aluminum) with electro-tin plating for corrosion resistance; equivalent power lugs are acceptable

Also, before attempting to connect source power to a DC-input power supply, review the content of the section in Chapter 2 entitled "DC-Powered Systems," which deals with the following topics:

Specifications for source DC input power (see in Chapter 1)

Specifications of the source DC power cable and lug (see in Chapter 2)

Dimensions of the lugs used with the source DC power cables (see in Chapter 2)

To connect source power to a DC-input power supply, perform the following steps:


Step 1 Verify that the rotary power switch on the DC-input power supply is in the OFF (O) position.


Caution   
Before proceeding to the next step, verify that the source DC circuit breaker servicing the source DC power cables you are attaching to the DC-input power supply is in the OFF position. As an additional check, measure the voltage across the DC power cable leads that you intend to connect to the power supply. The voltage reading should be zero.

Step 2 Loosen the knurled thumbscrew that secures the plastic safety cover to the faceplate of the power supply. Slide the plastic safety cover to the right and upward until it can be removed from the knurled thumbscrew and the two standoffs in the power supply faceplate. Set the cover aside temporarily.

Step 3 Attach the source DC power cables to the power supply terminals in the following order:

(a) Ground

(b) + (positive)

(c) - (negative)


Note   This order of connection of source DC power to the power supply terminals must be strictly observed.



Note   The color coding scheme used for the source DC power cables for the DC-input power supply depends on the scheme used for the site DC power source. Typically, green or green/yellow is used for earth ground, red is used for positive (+), and black is used for negative (-). Make certain that you properly map the color coding scheme used at the site for the DC power source to the proper terminals on the DC-input power supply faceplate.


Step 4 Remove the loosely mounted nuts and locking washers from the earth ground terminals on the power supply faceplate; place the grounding cable over the ground terminals; secure the cable in place on the terminals with the supplied nuts and locking washers (see a); tighten the nuts with a 10-mm nut driver or 1/4-inch socket wrench. Dress the cable up to the right and away from the power supply faceplate.


Caution   
Do not overtighten the nuts; a firm tightening only is recommended.

Step 5 Repeat the procedure outlined in Step 4 to connect the proper power cable to the + (positive) terminals on the power supply faceplate (see b).

Step 6 Repeat the procedure outlined in Step 4 to connect the proper power cable to the - (negative) terminals on the power supply faceplate (see c).


Note   When securing the earth ground, positive (+), and negative (-) power cables to the power supply terminals, leave a small service loop in the earth ground cable. Doing so helps to ensure that the grounding cable will be the last one to be stressed or disconnected from the power supply if excessive strain is placed on the DC power cables.


Figure 3-20 Connecting Source DC Power Cables to a DC-Input Power Supply

Step 7 If you intend to attach an external alarm monitoring facility to the circuit breaker alarm terminal block on the power supply, do so at this time. For an illustration of how the leads from the alarm monitoring facility are connected to the alarm terminal block, refer to in the section entitled "Adding a DC-Input Power Supply" in Chapter 7.

The section in Chapter 1 entitled "Circuit Breaker Alarm Terminal Block" describes the alarm monitoring facility in greater detail. This facility provides an overt (visible or audible) indication that an overcurrent (fault) condition has occurred in the DC-input power supply.

Step 8 Verify that the source DC cables from the source DC circuit breaker to the power supply terminals are properly installed and that the locking washers and nuts are securely fastened to the terminals.

Step 9 Reinstall the plastic safety cover by placing it over the two standoffs and the knurled thumbscrew on the power supply faceplate, sliding the cover to the left and downward until it is seated, and hand tightening the knurled thumbscrew.

Step 10 Repeat the procedure in Step 1 through Step 8 to connect source DC power to the second (redundant) DC-input power supply, if one is present.


Caution   
At this time, do not turn the rotary power switch to the ON (|) position for either a single or a redundant DC-input power supply.

Step 11 Turn on the source DC circuit breaker that services the DC-input power supply(ies).

You are now ready to start up your Cisco 12008, as described in the following section.

Starting the Cisco 12008

This section presents the procedures for starting up your Cisco 12008. It is assumed that you have completed all essential site preparation and installation tasks, including the connection of network interface cables to line cards and the connection of source power cables to the power supply(ies).

To start up your Cisco 12008, perform the following steps:


Step 1 Verify that the following conditions are satisfied:

Each line card is fully seated and its captive installation screws are tightened.

The RP is fully seated and its captive installation screws are tightened.

Each CSC, including the second (redundant) unit, if one is present, is fully seated in its dedicated slot in the middle of the upper card cage, and its captive installation screws are tightened.

A vertical cable-management bracket is attached to each installed line card and the bracket's captive installation screws are tightened.

All network interface cables are connected properly to line card ports and routed appropriately through the vertical cable-management brackets.

The console interface cable is properly connected to the console port on the RP faceplate, and the installation screws on the connector are tightened.

The source AC power cable is properly connected to the AC receptacle on the AC-input power supply and secured in place with the attached spring clip; likewise, verify the connections for the optional (redundant) AC-input power supply, if one is present.

The source DC power cable leads are properly connected to the terminals on the power supply, and the protective plastic cover is in place over the power supply terminals; similarly, verify that these conditions are satisfied for the optional (redundant) AC-input power supply, if one is present.

The main source power circuit breakers for the site are on.

The console terminal is on.

A Flash memory card containing the default Cisco IOS software is installed in PCMCIA slot 0 on the RP faceplate.

Step 2 Turn the rotary power switch on the power supply(ies) to the ON (|) position and observe the status of the LEDs on the power supply faceplate.

For the AC-input power supply(ies), the green AC INPUT OK LED should go on.

For the DC-input power supply(ies), the green INPUT OK LED should go on.

Step 3 Listen for the fans in the card cage fan tray and the power supply fan tray to power up. You should hear the fans come up to normal rotational speed in about 2 seconds.

In a noisy environment, you can check fan operation by placing your hand in front of the air filter assembly and the power supply fan tray to determine if air is being drawn into the interior of the router. Alternatively, you can place your hand at the top rear of the router to determine if air is being exhausted from the vents in the rear panel of the router enclosure.

This completes the initial installation procedures for the Cisco 12008. You can now proceed with the basic router configuration tasks, as presented in Chapter 4, "."