![]() RP/0/5/CPU0:router(admin)# show epm trace bootĢ4 wrapping entries (1024 possible, 3 filtered, 24 total) The following example shows sample output from the show epm trace boot command: If the standby RP is not installed or is not in the ready state, then the router enters ROMMON mode and routing operations stop. If a standby RP is in the ready state, then the router fails over to the standby RP. The following example shows how to reload the active RP. Standby card not present or not Ready for failover. If you use the reload command and there is no available standby node, you are prompted to continue with the reload: RP/0/ 0/CPU0:router# reload To view the status of the standby RP, issue the show redundancy command in EXEC mode. If a standby RP is not installed or is not in the ready state, then the router experiences a loss of service while the active RP is reloading Cisco IOS XR software. ![]() When the reload command is used and a switchover occurs, the running (active) software configuration is automatically maintained during switchover. Use the show redundancy command in EXEC mode to display the status of the standby RP. If a standby DSDRSC is in the ready redundancy state, the reload command also causes the router to fail over to the standby DSDRSC. Use the reload command to cause the DSDRSC to reload the Cisco IOS XR software according to the configuration register setting (for example, 0x0 to enter ROMMON mode and 0x2 to reload the RP to EXEC mode). To temporarily suspend disk mirroring without changing the configuration, use the mirror pause command in EXEC mode. Noncritical data, such as logging data, should not be mirrored and should, therefore, be saved to the secondary partition on the storage device. This guarantees that only critical data on the primary boot device is mirrored to the secondary device. If the primary boot device is not partitioned, once mirroring is enabled and all data on the primary boot device is replicated to the secondary device, the primary boot device is partitioned automatically. Therefore, if the primary boot device fails, applications continue to be serviced transparently by the secondary device, without having to switch control to a standby RP.īefore the mirror command can be used, the secondary storage device must be partitioned using the command. The mirror command replicates all critical data contained in the primary partition of the primary boot device, onto a second storage device on the same RP. To display the current configuration settings, use the show variables boot command. If both the primary and standby DSC are up and running when the configuration register value is set, the configuration register value applies to both the primary and standby DSC.īy contrast, if only the primary DSC is up and running when the configuration register value is set and the standby DSC is introduced into the router at a later time, the router does not attempt to synchronize the configuration register value for the standby RP to that of the active RP in this situation, the configuration register setting applied to the standby DSC is determined by the configuration register value set in ROMMON mode. When setting the configuration register value for the config-register command, note the following conditions: The DSC is the primary RP of the owner secure domain router (owner SDR). The config-register command is entered in administration EXEC mode, on the designated shelf controller (DSC) of the system. Configuration register settings can also be used to perform tasks such as password recovery. The configuration register can cause the RP to boot normally from the default configuration, or to enter ROMMON mode during a reload. ![]() The configuration register setting is a 16-bit, user-configurable value that determines how the route processor (RP) functions during initialization. If you suspect user group assignment is preventing you from using a command, contact your AAA administrator for assistance. To use this command, you must be in a user group associated with a task group that includes the proper task IDs.
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