Cisco CRS-1 - Carrier Routing System Router Getting Started Manual page 212

Entering ROM Monitor Mode
Resetting the Configuration Register and Reloading the Router
In normal operating conditions, it should not be necessary to enter ROM monitor mode. If you do find
it necessary to place the system in ROMMON, make sure that the system is in a steady state and that you
are prepared for the consequences of a system reload. In particular, verify the items described in the
"Prerequisites" section on page
If a standby RP is installed in the router, you must complete the steps for the standby after the primary
Note
RP has entered ROM monitor mode.
Prerequisites
Before you place the router in ROMMON mode, verify that the system is in a steady state, including the
following:
1.
2.
After you have verified that the system is in a stable state, you can enter ROM monitor mode by resetting
the configuration register setting, as described in the following steps.
SUMMARY STEPS
1.
2.
3.
4.
5.
6.
7.
8.
9.
Cisco CRS-1 Series Carrier Routing System Getting Started Guide
A-2
Prepare the primary RP:
Anticipate substantial downtime, including loss of packet forwarding on the system.
a.
b. Verify that all changes to the active router configuration are saved with the commit command
in configuration mode.
c. Verify that all changes to the active software set are saved with the install commit command in
EXEC mode.
d. Verify that all install commit processes are complete with the show install committed
command in EXEC mode. This command displays the committed packages that become active
during the next router boot.
Verify the other nodes in the system are in a steady state:
If a standby RP is installed, verify that it is in the "ready" state with the show redundancy
a.
command in EXEC mode.
Verify that all available nodes in the system are in HFROS-RUNNING state with the show
b.
platform command in EXEC mode.
Verify that the router is in a steady state, as described in the
Connect a terminal to the primary RP console port and log into the router.
configure
config-register 0x0
commit
no config-register 0x0
commit
end
reload
A-2.
Appendix A ROM Monitor Guide
"Prerequisites" section on page A-2.