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Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
OL-21483-02
Chapter 2 Troubleshooting Booting
Verifying and Troubleshooting Route Processor and Shelf Controller Cards
• Cisco CRS-1 4-Slot Line Card Chassis/Cisco CRS-1 8-Slot Line Card Chassis/Cisco CRS-1 16-Slot
Line Card Chassis
–
Primary (DSC) and standby route processors (RPs)
• Cisco CRS-1 Multishelf System
–
DSC in the line card chassis (LCC)
–
Standby shelf controller (SC) in the LCC
–
SC in the fabric card chassis (FCC)
–
Primary and standby route processor (RP) in the LCC
SUMMARY STEPS
1. Place the RP (or SC) in ROMMON mode.
2. set
3. Reseat the RP (or SCs) in the affected chassis.
4. Swap RP slots.
5. Verify connection status.
6. Collect console messages generated by the RP.
7. Contact Cisco Technical Support if the problem is not resolved.
DETAILED STEPS
Command or Action Purpose
Step 1
Place the RP or SC not booting in ROMMON mode. See Router Recovery with ROM Monitor in Cisco IOS XR
ROM Monitor Guide for information on entering
ROMMON mode.
Step 2
set
Example:
rommon B1 > set
Displays the environment variable settings for the card.
Verify that the variables are valid.
The following are valid variables:
rommon B1 > set
PS1=rommon ! > ?=0
The following variables are the main variables used for
netboot:
IP_SUBNET_MASK=255.255.0.0
TFTP_SERVER=223.255.254.254
IP_ADDRESS=12.2.53.41
TFTP_FILE=muck/jasamson/comp-hfr-full-hfr34-qq.vm
DEFAULT_GATEWAY=12.2.0.1
The following variables add verbosity to certain ROMMON
functions and to bypass auxiliary authentication in
Cisco
IOS XR:
TFTP_VERBOSE=2
AUX_AUTHEN_LEVEL=0
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