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This chapter explains the procedures for installing and starting the Cisco 7204. The chapter contains the following sections:
A rack-mount and cable-management kit is included in the shipping container. The rack-mount brackets in the kit are for mounting the Cisco 7204 in standard, 19-inch-wide, 4-post equipment racks or telco-type equipment racks. The rack-mount brackets are not suitable for use with other racks, such as 23-inch telco racks. The cable-management brackets are designed to relieve the strain on port adapter interface cables that are installed on port adapters in a Cisco 7204. If you are installing an equipment shelf or using mounting hardware other than that supplied with the chassis, review the guidelines in the section "Equipment Racks" in the chapter "Preparing for Installation," then proceed to the section "General Installation" in this chapter.
If you do not plan to install your Cisco 7204 in an equipment rack, proceed to the section "General Installation" later in this chapter.
The chassis mounts to two rack posts with brackets that attach to either the front or the rear sides of the chassis. The inside width between the two posts or mounting strips (left and right) must be at least 17.00 inches (43.18 cm).
Some equipment racks provide a power strip along the length of one of the mounting strips. Figure 3-1 shows a typical 4-post equipment rack with a power strip along one of the back posts. If your rack has this feature, consider the position of the strip when planning fastener points and ensure that you will be able to pull port adapters and other FRUs straight out of their respective slots.
The inlet and exhaust ports for cooling air are located on the right and left of the chassis, respectively, so multiple routers can be stacked in a rack with little or no vertical clearance.
If you want the port adapter end (the front) of the chassis recessed in the rack, install the rack-mount brackets at the front or rear of the chassis in the orientation shown in
Figure 3-2. If you want the front of the chassis protruding out of the rack, install the rack-mount brackets at the front or rear of the chassis in the orientation shown in Figure 3-3.
If you plan to install the cable-management brackets on a Cisco 7204 that you are rack-mounting, you must install the cable-management brackets and the rack-mount brackets on the chassis before you install the chassis in the rack.
There are two cable-management bracket configurations when rack-mounting the Cisco 7204 from the front. In the first configuration, the cable-management brackets are installed over the rack-mount brackets, and four screws secure both sets of brackets to the chassis. (Refer to Figure 3-4.) In the second configuration, two screws secure each rack-mount bracket to the chassis, and two additional screws secure each cable-management bracket to a rack-mount bracket. (Refer to Figure 3-5.)
If you are rack-mounting a Cisco 7200 series router from the rear, the rack-mount brackets are installed at the rear of the chassis, and the cable-management brackets are installed at the front of the chassis. You must install both sets of brackets before you install the chassis in the rack.
This section explains how to install the rack-mount and cable-management brackets at the front and the rear of the Cisco 7204. Before installing the chassis in the rack, you must install a rack-mount bracket on each side of the front or rear of the chassis. If you are rack-mounting the chassis from the front and you plan to use the cable-management brackets, you must install the cable-management brackets when you install the rack-mount brackets on the chassis.
If you are rack-mounting the chassis from the rear, you may install the rack-mount and cable-management brackets separately; however, both sets of brackets must be installed on the chassis before the chassis is installed in the rack.
The parts and tools required for installing the rack-mount and cable-management brackets are listed in the section "Tools for Installation" in the chapter "Preparing for Installation" of this guide.
 | Warning After attaching the brackets, and to avoid injury, we recommend that two people install the chassis in the rack. (One person should support the chassis in the rack while the second person installs the fasteners.) |
To install the rack-mount and cable-management brackets on a Cisco 7204 for a front rack-mount configuration, complete the following steps:
Step 1 Locate the threaded holes in the front sides of the chassis. If you plan to use the cable-management brackets in your rack-mount configuration, proceed with Step 2. If you do not plan to use the cable-management brackets, skip to Step 3.
Step 2 If you want the front of the chassis protruding out of the rack, align the first rack-mount bracket and the first cable-management bracket to the threaded holes in the right side of the chassis as shown in Figure 3-6.
If you want the front of the chassis recessed in the rack, align the first rack-mount bracket to the threaded holes in the right side of the chassis as shown in Figure 3-7.
Step 3 If you aligned the first rack-mount bracket and cable-management bracket to the right side of the chassis, thread two M4 x 8-mm Phillips flathead screws through both brackets and into the side of the chassis. Use a number 2 Phillips screwdriver to tighten the screws. (Refer to Figure 3-6.)
If you aligned only the first rack-mount bracket to the right side of the chassis, thread two M4 x 8-mm Phillips flathead screws through the bracket into the side of the chassis and use a number 2 Phillips screwdriver to tighten the screws. Then align the first cable-management bracket to the rack-mount bracket and thread two M4 x 8-mm Phillips flathead screws through the two brackets. Use a number 2 Phillips screwdriver to tighten the screws. (Refer to Figure 3-7.)
Step 4 Repeat Step 1 through Step 3 for the other cable-management bracket (if required) and rack-mount bracket.
This completes the procedure for installing the rack-mount and cable-management brackets on a Cisco 7204 for a front rack-mount configuration.
To install the rack-mount and cable-management brackets on a Cisco 7204 for a rear rack-mount configuration, complete the following steps:
Step 1 Locate the threaded holes in the rear sides of the chassis.
Step 2 Align the first rack-mount bracket to the threaded holes in the right side of the chassis.
If you want the front of the chassis protruding out of the rack, align the rack-mount bracket to the chassis as shown in Figure 3-8. If you want the front of the chassis recessed in the rack, align the rack-mount bracket to the chassis as shown in Figure 3-9.
Step 3 Thread two M4 x 8-mm Phillips flathead screws through the rack-mount bracket and into the side of the chassis. Use a number 2 Phillips screwdriver to tighten the screws.
Step 4 Repeat Step 1 through Step 3 for the other rack-mount bracket.
Step 5 If you plan to include the cable-management brackets in your rear rack-mount configuration, align the first cable-management to the threaded holes in the front sides of the chassis. (Refer to Figure 3-8 and Figure 3-9.)
Step 6 Thread two M4 x 8-mm Phillips flathead screws through the bracket and into the chassis. Use a number 2 Phillips screwdriver to tighten the screws.
Step 7 Repeat Step 5 and Step 6 for the other cable-management brackets.
This completes the procedure for installing the rack-mount brackets and cable-management brackets on the Cisco 7204. Proceed to the following section "Installing the Chassis in the Rack."
| Warning To prevent injury, review the safety precautions in the chapter "Preparing for Installation," before installing the router in a rack. |
After installing the brackets on the chassis, mount the router by securing the rack-mount brackets to two posts or mounting strips in the rack using the six slotted screws provided. Because the brackets support the weight of the entire chassis, be sure to use all six slotted screws to fasten the two rack-mount brackets to the rack posts. Figure 3-2, Figure 3-3, Figure 3-4, and Figure 3-5 show typical installations in 19-inch, 4-post and telco-type equipment racks.
We recommend that you allow at least one or two inches of vertical clearance between the router and any equipment directly above and below it.
| Warning To maintain a low center of gravity, ensure that heavier equipment is installed near the bottom of the rack. |
| Warning To prevent the rack from tipping when installing the router in telco-type racks, ensure that the rack is bolted to the floor and, if necessary, anchored with appropriate fixtures. |
To install the chassis in the rack, complete the following steps:
Step 1 On the chassis, ensure that all captive screws on the network processing engine, the I/O controller, and each power supply are tightened and the port adapter levers are in the locked position.
Step 2 Make sure that your path to the rack is unobstructed. If the rack is on wheels, ensure that the brakes are engaged or that the rack is otherwise stabilized.
| Warning To prevent damage to the chassis or personal injury, never attempt to lift or tilt the Cisco 7204 using the port adapter handles or the I/O controller handle; they are not designed to support the weight of the router. Always have someone help you when installing the Cisco 7204. |
Step 3 Position the chassis so that the front end is closest to you; then lift the chassis and move it to the rack. To prevent injury, avoid sudden twists or moves.
Step 4 Slide the chassis into the rack, pushing it back until the brackets (installed at the front or rear of the chassis) meet the mounting strips or posts on both sides of the equipment rack.
Step 5 While keeping the brackets flush against the posts or mounting strips, position the router so the holes in the brackets are aligned with those in the mounting strips.
Step 6 Insert all six 10-32 x 3/8 slotted screws (three on each side) through the brackets and into the mounting strip (use the top and bottom bracket holes, as shown in Figure 3-2, Figure 3-3, Figure 3-4, and Figure 3-5). Using a 1/4-inch, flat-blade screwdriver, tighten all the screws.
This completes the procedure for installing the chassis in the rack. Proceed to the section "Connecting Port Adapter Cables," in this chapter, to continue the installation.
The router should already be in the area where you will install it, and your installation location should already be determined. If not, refer to the section "Site Requirements" in the chapter "Preparing for Installation."
When installing the Cisco 7204 on a workbench or tabletop, ensure that the surface is clean and in a safe location and that you have considered the following:
Following are the steps for installing the Cisco 7204 on a workbench or tabletop:
Step 1 Remove any debris and dust from the tabletop or workbench, as well as the surrounding area. Also make sure your path between the router and its new location is unobstructed.
Step 2 On the chassis, ensure that all captive screws on the network processing engine, the I/O controller, and each power supply are tightened and the port adapter levers are in the locked position.
| Warning To prevent damage to the chassis or personal injury, never attempt to lift or tilt the Cisco 7204 using the port adapter handles or the I/O controller handle; they are not designed to support the weight of the router. Always have someone help you when installing the Cisco 7204. |
Step 3 Lift the chassis by placing your hands around the chassis sides and lifting the chassis from underneath. To prevent injury, avoid sudden twists or moves.
Step 4 Place the router on the tabletop or workbench.
Step 5 Ensure that there is at least three inches of clearance at the inlet and exhaust vents of the router and no exhaust air from other equipment will be drawn into the chassis. Also, ensure that there is approximately 19 inches of clearance at the front and rear of the chassis.
This completes the general installation.
To install the cable-management brackets on the Cisco 7204, complete the following steps:
Step 1 Locate the threaded holes in the front sides of the chassis.
Step 2 Align the first cable-management bracket to the threaded holes in the right side of the chassis. (Refer to Figure 3-5.)
Step 3 Thread two M4 x 8-mm Phillips flathead screws through the bracket and into the chassis. Use a number 2 Phillips screwdriver to tighten the screws.
Step 4 Repeat Step 1 through Step 3 for the other cable-management bracket.
This completes the steps for installing the cable-management brackets on the Cisco 7204.
To secure port adapter interface cables to the cable-management brackets, complete the following steps:
Step 1 Select a tie wrap and release its locking mechanism.
Step 2 Carefully lace the interface cables from a port adapter installed in the chassis between the two ends of the unlocked tie wrap.
Step 3 With the interface cables between the ends of the tie wrap and the interface cables' service loop in place, tighten the cable tie down around the interface cables until they are secured against the cable-management bracket. (Refer to Figure 3-5.)
Step 4 Repeat Step 1 through Step 3 for any other port adapter interface cables installed in the router.
This completes the procedure for securing port adapter interface cables to the cable-management brackets. Proceed to the following section, "Providing a Chassis Ground Connection for the Router Chassis," to continue the installation.
Before you connect power or turn on power to your router, we strongly recommend that you provide an adequate chassis ground (earth) connection for your router's chassis. Chassis grounding receptacles are provided on each Cisco 7204 router chassis. (Refer to
Figure 1-3.)
To ensure the chassis grounding connection that you provide is adequate, you will need the following parts and tools:
Use the following procedure to attach the grounding lug to the chassis grounding receptacles on your router chassis:
Step 1 Locate the chassis grounding receptacles on your router chassis (refer to Figure 1-3 in the chapter "Product Overview").
Step 2 Insert the two screws through the holes in the grounding lug. (See Figure 3-11.) Ensure that the grounding lug does not interfere with other router hardware, such as power supplies or the network processing engine.
Step 3 Use the Phillips screwdriver to carefully tighten the screws until the grounding lug is held firmly to the chassis. Do not overtighten the screws.
(See Figure 3-11.)
Step 4 Use the wire stripping tool to strip one end of the 6-AWG wire approximately 0.75 inches (19.05 mm).
Step 5 Insert the 6-AWG wire into the wire receptacle on the grounding lug. (See Figure 3-11.)
Step 6 Use the crimping tool to carefully crimp the wire receptacle around the wire; this step is required to ensure a proper mechanical connection.
Step 7 Connect the opposite end of the grounding wire to the appropriate grounding point at your site to ensure an adequate chassis ground.
This completes the procedure for providing a chassis ground connection.
The instructions for connecting the cables for each port adapter installed in the Cisco 7204 are contained in the respective configuration note for each port adapter (service adapters do not have cables). For example, if you are connecting the cables for a PA-A3 enhanced ATM port adapter, refer the configuration note PA-A3 Enhanced ATM Port Adapter Installation and Configuration. This configuration note accompanies every PA-A3 enhanced ATM port adapter that is shipped from the factory as an installed item in a Cisco 7204 or as a FRU. The document is also available on the Cisco Connection Documentation CD-ROM and on Cisco Connection Online (CCO).
Instructions for securing port adapter interface cables to the cable-management brackets are contained in the section "General Installation" earlier in this chapter.
The console and auxiliary ports for the Cisco 7204 are located on the I/O controller. The
I/O controller also has an optional Fast Ethernet port (refer to Figure 3-12). This section contains connection equipment and pinout information for the console, auxiliary, and Fast Ethernet ports on the I/O controller.
The I/O controller has two EIA/TIA-232 ports: a DCE-mode console port and a DTE-mode auxiliary port. (Refer to Figure 3-13.) The console port is a DCE DB-25 receptacle for connecting a data terminal, which you will use to configure the interfaces and bring up the router. The auxiliary port is a DTE DB-25 plug for connecting a modem or other DCE device (such as a CSU/DSU or other router) to the Cisco 7204.
Before connecting a terminal to the console port, configure the terminal to match the router console port 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. After you establish normal router operation, you can disconnect the terminal.
You must supply your own interface cable between the auxiliary port and the equipment you are connecting. For console and auxiliary port pinouts, refer to the following sections "Console Port Signals" and "Auxiliary Port Signals."
Table 3-1 lists the signals used on the console port. The console port does not support modem control or hardware flow control. Both Data Set Ready (DSR) and Data Carrier Detect (DCD) signals are active when the system is running. The Request To Send (RTS) signal tracks the state of the Clear to Send (CTS) input. The console port requires a straight-through EIA/TIA-232 cable.
| 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) |
Table 3-2 lists the signals used on the auxiliary port. The auxiliary port supports hardware flow control and modem control.
| Pin | Signal | Direction | Description |
|---|---|---|---|
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) |
The I/O controller is available with or without a Fast Ethernet port. The I/O controller with a Fast Ethernet port is equipped with either a single MII receptacle or an MII receptacle and an RJ-45 receptacle (only one receptacle can be used at a time). Although still supported by Cisco Systems, the I/O controller equipped with the single MII receptacle was discontinued as an orderable product in May 1998. The following sections explain Fast Ethernet MII and RJ-45 connection equipment.
The MII receptacle on the I/O controller is a 40-pin, D-shell type connector that is configurable for 100 megabits per second (Mbps) full-duplex or half-duplex (half-duplex is the default). The MII receptacle supports IEEE 802.3u interfaces compliant with the 100BASE-X and 100BASE-T standards. The MII connection requires an external transceiver that permits connection to multimode fiber for 100BASE-FX or 100BASE-T4 physical media (refer to Figure 3-14).
Depending on the type of media you use between the MII connection and your switch or hub, the network side of your 100BASE-T transceiver should be appropriately equipped with ST-type connectors (for optical fiber), BNC connectors, and so forth.
Figure 3-15 shows the pin orientation of the MII receptacle on the I/O controller.
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 pinouts and signals for the I/O controller MII receptacle.
| Pin1 | In | Out | I/O | 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. |
The RJ-45 receptacle on the I/O controller is configurable for 100 Mbps full-duplex or
half-duplex (half-duplex is the default) and supports IEEE 802.3, Ethernet, and IEEE 802.3u interfaces complaint with 10BASE-T and 100BASE-TX specifications.
The RJ-45 receptacle supports standard straight-through and crossover Category 5 UTP cables (refer to Figure 3-14). Cisco Systems does not supply Category 5 UTP cables; these cables are available commercially.
Figure 3-16 shows the RJ-45 connector. Table 3-4 lists the pinouts and signals for the RJ-45 receptacle.
| Warning To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables. |
| Pin | Description |
|---|---|
1 | Receive Data + (RxD+) |
2 | RxD- |
3 | Transmit Data + (TxD+) |
6 | TxD- |
Depending on your I/O controller RJ-45 interface cabling requirements, use the pinouts shown in Figure 3-17 and Figure 3-18 for straight-through and crossover twisted-pair cable connections.
To identify the RJ-45 cable type, hold the two ends of the cable next to each other so you can see the colored wires inside the ends, as shown in Figure 3-19.
Examine the sequence of colored wires to determine the type of RJ-45 cable as follows:
| Warning Read the installation instructions before you connect the system to its power source. |
This section provides the procedures for connecting AC-input and DC-input power to your Cisco 7204.
| Warning Only trained and qualified personnel should be allowed to install or replace this equipment. |
Connect a 280W AC-input power supply as follows:
Step 1 At the rear of the router, check that the power switch on the power supply is in the OFF (O) position.
Step 2 Slide the cable-retention clip down, away from the AC receptacle, and plug in the power cable.
Step 3 Secure the cable in the power supply AC receptacle by sliding the cable-retention clip up until it fits around the connector. The cable-retention clip provides strain relief for the AC power cable (refer to Figure 3-20).
Step 4 Plug the AC power supply cable into the AC power source.
Step 5 Repeat Step 1 through Step 4 for the second power supply (if present).
This completes the procedure for connecting AC-input power.
Connect a 280W DC-input power supply as follows:
| Warning Before completing any of the following steps, and to prevent short-circuit or shock hazards, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position. |
| Warning When installing the unit, the ground connection must always be made first and disconnected last. |
Step 1 Ensure that the -48V and +48V leads are disconnected from the power source.
Step 2 Using a wire stripper, strip approximately 0.55 inch (14 mm) from the -48V, +48V, and ground leads (refer to Figure 3-21).
Step 3 At the rear of the router, check that the power switch on the power supply is in the OFF (O) position (refer to Figure 3-22).
Step 4 Insert the stripped end of the ground lead all the way into the ground lead receptacle on the DC-input power supply and tighten the receptacle screw using a 3/16-inch flat-blade screwdriver (refer to Figure 3-22).
Step 5 Insert the stripped end of the +48V lead all the way into the +48V lead receptacle and tighten the receptacle screw using the same 3/16-inch flat-blade screwdriver. Repeat this step for the -48V lead.
Step 6 After tightening the receptacle screw for the ground, +48V, and -48V DC-input leads, use the cable tie you saved earlier in this procedure to secure the three leads to the power supply faceplate.
Step 7 Connect the ground, +48V, and -48V leads to the power source.
This completes the procedure for connecting DC-input power. Proceed to the following section, "Starting the Cisco 7204," to start the router.
After installing your Cisco 7204 and connecting cables, start the router as follows:
Step 1 Check for the following:
Step 2 At the rear of the router, place the power switch on the power supply in the ON (|) position. Repeat this if a second power supply is installed. The green OK LED on the power supply turns on.
Step 3 Listen for the fans; you should immediately hear them operating.
Step 4 During the boot process, observe the system LEDs. The LEDs on most of the port adapters go on and off in irregular sequence. Some may go on, go out, and go on again for a short time. On the I/O controller, the IO power OK LED comes on immediately.
Step 5 Observe the initialization process. When the system boot is complete (a few seconds), the network processing engine begins to initialize the port adapters and the I/O controller. During this initialization, the LEDs on each port adapter behave differently (most flash on and off). The enabled LED on each port adapter goes on when initialization is completed, and the console screen displays a script and system banner similar to the following:
Step 6 When you start up the Cisco 7204 for the first time, the system automatically enters the setup command facility, which determines which port adapters are installed and prompts you for configuration information for each one. On the console terminal, after the system displays the system banner and hardware configuration, you will see the following System Configuration Dialog prompt:
--- System Configuration Dialog ---At any point you may enter a questions mark `?' for help.Default settings are in square brackets `[]'.continue with configuration dialog? [yes]:You have the option of proceeding with the setup command facility to configure the interfaces, or exiting from setup and using configuration commands to configure global (system-wide) and interface-specific parameters. You do not have to configure the interfaces immediately; however, you cannot enable the interfaces or connect them to any networks until you have configured them.
Many of the port adapter LEDs will not go on until you have configured the interfaces. To verify correct operation of each interface, complete the first-time startup procedures and configuration, then refer to the configuration note for each port adapter for LED descriptions and to check the status of the interfaces.
Your installation is complete. Proceed to the chapter "Performing a Basic Configuration of the Cisco 7204" to perform a basic configuration for your Cisco 7204.
If the system does not complete each of the steps in the startup procedure, proceed to the chapter "Troubleshooting the Installation" for troubleshooting recommendations and procedures.
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