Installing Network Modules in Cisco Modular Routers

Installing a Network Module in a Chassis Slot

Installing a Network Module Offline

Installing Hot-Swappable Network Modules in Cisco 3660 Routers

Removing a Hot-Swappable Network Module

Installing a Hot-Swappable Network Module

Blank Network Module Panels

Installing a WAN or Voice Interface Card
in a 2-Slot Network Module

WAN Interface Card Blank Panels

Where to Go Next

Installing Network Modules in Cisco Modular Routers

This chapter describes how to install network modules in Cisco modular routers. It contains the following sections:

Note Be sure to observe all warnings and safety precautions in "Preparing to Install Network Modules."

Installing a Network Module in a Chassis Slot

You must install network modules offline in Cisco 2600 series and Cisco 3620 and Cisco 3640 routers. Network modules can be replaced in a Cisco 3660 router while the power is on without affecting operation (online insertion and removal or "hot swap").

Caution Cisco 2600 series and Cisco 3620 and Cisco 3640 routers do not support online insertion and removal (hot swap) of network modules. To avoid damaging the module, you must turn OFF electrical power and disconnect network cables before you insert the module into a chassis slot.

Caution Cisco 3660 routers support hot swapping with similar modules only. If you remove a network module, install another module exactly like it in its place. If you remove a 2-slot network module (along with any installed WAN or voice interface cards), install another module and card combination exactly like it.

Caution Do not hot-swap WAN interface cards or voice interface cards in 2-slot network modules. Doing so will damage the cards and network modules. To avoid damage, you must turn OFF electrical power and disconnect network cables before you insert a WAN or voice interface card into a network module slot.

The following instructions apply only to installing network modules in a modular router chassis slot. To install a WAN interface card in a network module, see the "Installing a WAN or Voice Interface Card in a 2-Slot Network Module" section.

Installing a Network Module Offline

You can install network modules in the chassis either before or after mounting the router, whichever is more convenient.

Follow this procedure to install a network module offline:

Step 1 Turn OFF electrical power to the router. However, to channel electrostatic discharge (ESD) voltages to ground, do not unplug the power cable. Remove all network interface cables, including telephone cables, from the rear panel.

The following warning applies to routers that use a DC power supply:

Warning Before performing any of the following procedures, 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.

Step 2 Using either a number 1 Phillips screwdriver or a small flat-blade screwdriver, remove the blank filler panel from the chassis slot where you plan to install the module. Save the blank panel for future use.

Step 3 Align the network module with the guides in the chassis and slide it gently into the slot. (See Figure 3-1.)

Figure 3-1: Installing a Network Module in a Modular Router (Typical)

Step 4 Push the module into place until you feel its edge connector mate securely with the connector on the motherboard.

Step 5 Fasten the module's captive mounting screws into the holes in the chassis, using the Phillips or flat-blade screwdriver.

Step 6 If the router was previously running, reinstall the network interface cables and turn ON power to the router.

The following warning applies to routers that use a DC power supply:

Warning After wiring the DC power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position.

Installing Hot-Swappable Network Modules in Cisco 3660 Routers

The Cisco 3660 router allows you to replace network modules without switching off the router or affecting the operation of other interfaces. This feature provides uninterrupted operation to network users, maintains routing information, and ensures session preservation.

Removing a Hot-Swappable Network Module

For a description of informational and error messages that may appear on the console during this procedure, see the Cisco 3600 Series Hardware Installation Guide.

Follow these steps to remove a hot-swappable network module from a Cisco 3660 router:

Step 1 Enter interface configuration mode, and shut down each interface on the network module that you want to remove, as in this example:

Router(config)# interface fastethernet 1/0
Router(config-if)# shutdown

For a description of configuration commands, see the Software Configuration Guide for Cisco 2600 Series and Cisco 3600 Series Routers. To obtain this publication, see the "Obtaining Documentation" section.

To see information about network module interfaces, enter the show interfaces command.

Step 2 Repeat Step 1 for each interface on the network module.

Step 3 Unplug all network interface cables from the module.

Step 4 Loosen the two captive screws holding the network module in the chassis slot. (See Figure 3-2.)

Step 5 Slide the network module out of the slot. (See Figure 3-2.)

Install a replacement network module, as described in the next section. If you are not planning to install a network module at this time, see the "Blank Network Module Panels" section.

Figure 3-2: Hot-Swapping Network Modules

Installing a Hot-Swappable Network Module

For a description of informational and error messages that may appear on the console during this procedure, see the Cisco 3600 Series Hardware Installation Guide. To obtain this publication, see the "Obtaining Documentation" section.

Follow these steps to remove a hot-swappable network module from a Cisco 3660 router:

Step 1 Align the replacement network module with the guides in the chassis slot and slide it gently into the slot. (See Figure 3-2.)

Step 2 Push the module into place until you feel its edge connector mate securely with the connector on the backplane.

Step 3 Fasten the module's captive mounting screws into the holes in the chassis, using the Phillips or flat-blade screwdriver. (See Figure 3-2.)

Step 4 Reconnect the network interface cables previously removed in Step 3 of the "Removing a Hot-Swappable Network Module" section.

Step 5 Check that the network module LEDs light, and that the Active/Ready LEDs on the front panel also light. (For an explanation of network module LEDs, see the chapter for connecting the network module in this book.)

Step 6 Enter interface configuration mode, and activate each interface on the network module, as in this example:

Router(config)# interface fastethernet 1/0
Router(config-if)# no shutdown

To see information about network module interfaces, enter the show interfaces command.

Step 7 Repeat Step 6 for every interface on the network module.

Blank Network Module Panels

If the router is not fully configured with network modules, make sure that blank panels fill the unoccupied chassis slots to provide proper airflow. (See Figure 3-3.)

Figure 3-3: Blank Network Module Panel

Installing a WAN or Voice Interface Card
in a 2-Slot Network Module

The following instructions apply only to installing a WAN or voice interface card in a 2-slot module. To install a network module in a chassis slot, see the "Installing a Network Module in a Chassis Slot" section.

Warning To avoid electric shock, do not insert a WAN or voice interface card into a 2-slot module while power is ON or network cables are connected.

Note A WAN or voice interface card can be installed in a module that is already installed in a router. Before inserting a WAN interface card into a network module that is already installed in the router chassis, you must turn OFF electrical power.

Note Do not install an ISDN BRI WAN interface card or an ISDN BRI network module in the same chassis as an ISDN PRI network module, unless you are using Cisco IOS Release 11.3(3)T or later. Earlier releases of Cisco IOS software do not support this configuration.

Note Do not install a newer BRI WAN interface card in the same network module as an older BRI WAN interface card. To identify the newer and older cards, observe the LED placement: on the newer card, the B-channel LEDs are arranged horizontally and on the older card, the B-channel LEDs are arranged vertically.

To install a WAN or voice interface card, follow this procedure:

Step 1 If you are installing the card directly into a 2-slot network module in the router, turn OFF power to the router. However, to channel ESD voltages to ground, do not unplug the power cable. Remove all network interface cables, including telephone cables, from the rear panel.

The following warning applies to routers that use a DC power supply:

Step 2 Using a Phillips or flat-blade screwdriver, remove the blank filler panel from the network module slot where you plan to install the card. Save the filler panel for possible future use.

Step 3 Align the card with the guides in the module slot and slide it gently into place until the edge connector is securely seated in the connector on the module. (See Figure 3-4.)

Figure 3-4: Installing a WAN Interface Card in a Network Module (Typical)

Step 4 Fasten the captive mounting screws into the holes of the module faceplate, using a Phillips or flat-blade screwdriver.

Step 5 If the router was previously running, reinstall the network interface cables and power ON the router.

The following warning applies to routers that use a DC power supply:

Warning After wiring the DC power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position.

WAN Interface Card Blank Panels

If the 2-slot network module is configured with fewer than two WAN or voice interface cards, make sure that blank panels fill the open module slots to provide proper airflow. (See Figure 3-5.)

Figure 3-5: WAN Interface Card Slot Filler Panel

Where to Go Next

The next chapters in this guide contain connection and LED information for Cisco network modules. Continue with the chapter for your type of network module:

Table of Contents

Installing Network Modules in Cisco Modular Routers

Installing a WAN or Voice Interface Card in a 2-Slot Network Module

Installing a WAN or Voice Interface Card
in a 2-Slot Network Module