Cisco CRS-1 - Carrier Routing System Router Troubleshooting Manual page 221

Chapter 10 Troubleshooting Upgrading and Downgrading Software
5.
6.
7.
8.
DETAILED STEPS
Command or Action
Step 1
show version
Example:
RP/0/RP0/CPU0:router# show version
Step 2
show diag | inc ROM|NODE|PLIM
Example:
RP/0/RP0/CPU0:router# show diag | inc
ROM|NODE|PLIM
Step 3
more nvram:/classic-rommon-var
Example:
RP/0/RP0/CPU0:router# more
nvram:/classic-rommon-var
Step 4.
admin
config-register 0x0
exit
reload
Example:
RP/0/RP0/CPU0:router# admin
RP/0/RP0/CPU0:router(admin)# config-register
0x0
RP/0/RP0/CPU0:router(admin)# exit
RP/0/RP0/CPU0:router# reload
Step 5
set
Example:
rommon B1 > set
OL-21483-02
set --
environment variable(s)
sync
Exit ROMMON mode:
confreg 0x102
a.
reset
b.
Contact Cisco Technical Support if the problem is not resolved.
Verifying and Troubleshooting the ROM Monitor Version
Purpose
Displays information about the router, including image
names, uptime, and other system information.
Verify that the expected ROMMON version is installed. If
the version is not as expected, see Cisco IOS XR ROM
Monitor Guide for the Cisco CRS-1 Router for information
on upgrading or downgrading the ROM Monitor version.
Displays details about the hardware and software on each
node in a router.
Verify that the ROMMON version on each node is as
expected. If the version is not as expected on a node, see
Cisco IOS XR ROM Monitor Guide for the Cisco CRS-1
Router for information on upgrading or downgrading the
ROM Monitor version.
Displays the configured environment variables.
Ensure that the environment variable setting are as
expected. If the environment variables are not as expected,
proceed to Step 4.
Places the DSC in ROMMON.
Displays the configured environment variables.
Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
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