7-21
Cisco CRS-1 Series Carrier Routing System Getting Started Guide
Chapter 7 RP Redundancy and Hardware Administration on Cisco IOS XR Software
RP Redundancy and Failover
Caution You should not use the reset command to force an RP failover, because the result could be a significant
loss of router operations. Instead, use the redundancy failover command to fail over to the standby RP,
then use the hw-module node nodeID reset command to reset the RP. See the “Reloading, Shutting
Down, or Power Cycling a Node” section on page 7-22 for more information.
Manual Failover
You can force a manual failover from the primary RP to the standby RP using the redundancy failover
command.
If a standby RP is installed and ready for failover, the standby RP becomes the active primary RP. The
original primary RP becomes the standby RP. In the following example, partial output for a successful
redundancy failover operation is shown:
RP/0/RP0/CPU0:router# show redundancy
This node (0/RP0/CPU0) is in ACTIVE role
Partner node (0/RP1/CPU0) is in STANDBY role
Standby node in 0/RP1/CPU0 is ready
.
.
.
RP/0/RP0/CPU0:router# redundancy failover
Initializing DDR SDRAM...found 2048 MB
Initializing ECC on bank 0
.
.
.
Turning off data cache, using DDR for first time
Initializing NVRAM...
Testing a portion of DDR SDRAM ...done
Reading ID EEPROMs ...
Initializing SQUID ...
Initializing PCI ...
PCI0 device[1]: Vendor ID 0x10ee
Configuring MPPs ...
Configuring PCMCIA slots ...
--More--
If the standby RP is not in “ready” state, the failover operation is not allowed. In the following example,
partial output for a failed redundancy failover attempt is shown:
RP/0/RP0/CPU0:router# show redundancy
This node (0/RP0/CPU0) is in ACTIVE role
Partner node (0/RP1/CPU0) is in UNKNOWN role
RP/0/RP1/CPU0:router# redundancy failover
Standby card not running; failover disallowed.
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