Brocade Communications Systems Layer 3 Routing Configuration ICX 6650 - Manual (Page 463)

Brocade ICX 6650 Layer 3 Routing Configuration Guide 445
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Forcing a Master router to abdicate to a Backup router
Forcing a Master router to abdicate to a Backup router
NOTE
Forcing a Master router to abdicate to a Backup router is not supported for IPv6 VRRP, IPv4 VRRP-E,
and IPv6 VRRP-E. It is only supported for IPv4 VRRP.
You can force a VRRP Master to abdicate (give away control) of a VRID to a Backup router by
temporarily changing the Master priority to a value less than that of the Backup router.
The VRRP Owner always has priority 255. You can use this feature to temporarily change the Owner
priority to a value from 1 through 254.
NOTE
When you change the VRRP Owner priority, the change takes effect only for the current power cycle.
The change is not saved to the startup-config file when you save the configuration and is not retained
across a reload or reboot. Following a reload or reboot, the VRRP Owner again has priority 255.
To change the Master priority, enter commands such as the following.
Brocade(config)# interface ethernet 1/1/6
Brocade(config-if-e10000-1/1/6)# ip vrrp vrid 1
Brocade(config-if-e10000-1/1/6-vrid-1)# owner priority 99
Syntax: [no] owner priority num
The num variable specifies the new priority and can be a number from 1 through 254.
When the command is enabled, the software changes the priority of the Master to the specified
priority. If the new priority is lower than at least one Backup priority for the same VRID, the Backup
router takes over and becomes the new Master until the next software reload or system reset.
To verify the change, enter the following command from any level of the CLI.
This example shows that even though this Layer 3 switch is the Owner of the VRID (“mode owner”),
the Layer 3 switch priority for the VRID is 110 and the state is now “backup” instead of “active”. In
addition, the administrative status is “enabled”.
Brocade#show ip vrrp
Total number of VRRP routers defined: 1
Interface ethernet v3
auth-type simple text password
VRID 3
state backup
administrative-status enabled
mode non-owner(backup)
priority 110
current priority 110
hello-interval 1000 msec
dead-interval 0 msec
current dead-interval 3500 msec
preempt-mode true
ip-address 192.168.3.1
virtual mac address 0000.0000.0103
advertise backup: enabled
next hello sent in 00:00:26.1
master router 192.168.3.1 expires in 00:00:02.7
track-port 1/1/1-1/1/4(up)