1. Solution Use the show configuration failed command to get information on why the configuration failed.
RP/0/RP0/CPU0:ios(config)# show configuration failed
Wed Dec 9 06:05:39.694 UTC
!! SEMANTIC ERRORS: This configuration was rejected by
!! the system due to semantic errors. The individual
!! errors with each failed configuration command can be
!! found below.
controller Optics0/0/0/13
dwdm-carrier 100MHz-grid frequency 1911500
!!% Invalid argument: Wavelength change is allowed only in shutdown or maintenance state
!
end
Removing and Re-inserting DIMMs on the Controller Card
There are two DIMMs on the controller card (NCS1K-CNTLR=). If one DIMM is displaced, BIOS will boot;
however, Cisco IOS XR does not boot due to insufficient memory. If both DIMMs are displaced, BIOS will
not boot. In both the scenarios, it is recommended to remove and re-insert DIMMs on the controller card.
Before you begin
Follow the standard electrostatic discharge (ESD) rules according to local site practice before replacing
DIMMs.
Step 1 Remove DIMMs - Push the connector latches down.
Step 2 Re-insert DIMMs - Push DIMM down into the connector by pressing on two points close to the far ends of DIMM.
Step 3 Verify correct insertion - The two connector latches must be closed if DIMM has been correctly inserted. Pull DIMM up
to verify.
Figure 1: Remove and Re-insert DIMMs
Troubleshooting Guide for Cisco NCS 1002, IOS XR Release 6.3.x
27
General Troubleshooting
Removing and Re-inserting DIMMs on the Controller Card
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