Maintaining the Cisco12008 7-57
Removing and Replacing Switch Cards
When you install a new CSC or SFC, the routers 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 ov er
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:
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 routers 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.
Step1 Loosen the two panel fastener screws on each side of the air filter assembly (see
Figure7-16); remove the assembly and set it aside.