Installation guide

5-3
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Chapter 5 Replacing Parts on the IGX
Replacing Back Cards
Note For an illustrated view of removing and inserting cards, see the “Inserting the Cards” section on
page 3-8.
Replacing Back Cards
This section describes how to remove and replace a back card such as the SCM.
Note Note that no connections are to be deleted prior to replacing an SCM.
Step 1 Visually inspect the replacement SCM to verify that it is in good working order.
Note If the replacement IGX SCM has any defects, contact the Cisco TAC and do not proceed with
replacement. For more information, refer to the “Obtaining Technical Assistance” section on
page xxiii.
Step 2 Verify that the SCM jumpers W5 and W6 are configured correctly for your IGX node. Remove or add
jumpers if necessary.
Note SCM jumpers W5 and W6 determine the total number of cards the switch software will sense
(W5 in and W6 out = IGX-8; W5 out and W6 in = IGX-16; W5 and W6 out = IGX-32). For an
illustrated view of SCM jumpers W5 and W6, see the “Preparing the Cards” section on page 3-1.
Step 3 Verify that there are no alarms on the IGX LEDs by using the dspalms command. Clear all alarms on
target node, if possible.
Step 4 Reset the standby NPM if the target IGX has CC redundancy. Allow the module to come back to standby
mode.
Note Resetting the Standby NPM can take 30 minutes or longer depending on the size and complexity
of the network. This activity can be completed during a maintenance window 12 hours in
advance of the SCM replacement, as long as there are no provisioning or changes to the target
IGX during those 12 hours.
Step 5 Use the switchcc command to verify that both NPMs can control IGX functionality.
Step 6 Wait for the standby NPM to come back into standby mode.
Step 7 Power the IGX node down.
Step 8 Disconnect all cables to the SCM. Identify and mark any cable locations before removing them.
Step 9 Loosen the captive mounting screws on the top and bottom of the IGX SCM faceplate.
Step 10 Operate the extractor levers and slide the SCM out of the cabinet.
Step 11 Inspect the backplane (upper portion of the IGX chassis) and the utility bus (lower portion of the
IGX chassis) to verify that there are no bent pins or other defects.