Cisco Systems Cisco 12008 manual Removing an SFC, Removing and Replacing Switch Cards

Removing and Replacing Switch Cards

When you install a new CSC or SFC, the router’s OIR capability enables the new card to be recognized, initialized, and become operational in a transparent manner.

For the procedures in this section, it is assumed that you will be removing and replacing a switch card from a fully redundant and operational router.

When you replace a failed switch card, only four switch planes remain available to the router. For the duration of the replacement procedure, no redundant plane exists to take over if any other switch plane fails.

Under normal operating conditions in a fully redundant system, you would not leave a CSC slot or an SFC slot vacant for any length of time beyond that required to replace a failed card.

Two dedicated slots (CSC0 and CSC1) in the middle of the upper card cage are reserved for exclusive use by CSCs. Three dedicated slots (SFC0, SFC1, and SFC2) in the lower card cage are reserved for exclusive use by SFCs.

You will need the following tools and parts to install or replace a switch card:

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1/4-inch flat-blade screwdriver

ESD-preventive wrist strap

Clock and scheduler card (CSC)—product number GSR8-CSC=

Switch fabric card (SFC)—product number GSR8-SFC=

Removing an SFC

To remove an SFC from the router, perform the following steps.

Note Before accessing any of the router’s internal components, put on an antistatic wrist strap and make sure that it makes ample contact with your skin. Insert the equipment end of the wrist strap (the banana jack) into the ESD socket in the lower left corner of the upper card cage.

Step 1 Loosen the two panel fastener screws on each side of the air filter assembly (see Figure 7-16); remove the assembly and set it aside.

Maintaining the Cisco 12008 7-57