Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 826)

798 Multi-Service IronWare Routing Configuration Guide
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Configuring additional VRRP and VRRP-E parameters
The syntax is the same for VRRP and VRRP-E.
Master router abdication and reinstatement
To change the Master’s priority, enter the following commands.
Brocade(config)# interface ethernet 1/6
Brocade(config-if-e10000-1/6)# ip vrrp vrid 1
Brocade(config-if-e10000-1/6-vrid-1)# owner priority 99
Syntax: [no] owner priority | track-priority num
The num parameter specifies the new priority and can be a number from 1 through 254.
When you press Enter, the software changes the priority of the Master to the specified priority. If
the new priority is lower than at least one Backup’s priority for the same virtual router, the Backup
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.
Brocade(config-if-e10000-1/6-vrid-1)# show ip vrrp
Total number of VRRP routers defined: 1
Interface ethernet 1/6
auth-type no authentication
VRID 1
state backup
administrative-status enabled
mode owner
priority 99
current priority 99
hello-interval 1 sec
ip-address 10.53.5.1
backup routers 10.53.5.2
This example shows that even though this Brocade device is the Owner of the virtual router (“mode
owner”), the Brocade device’s priority for the virtual router is only 99 and the state is now “backup”
instead of “active”. In addition, the administrative status is “enabled”.
To change the Master’s priority back to the default Owner priority 255, enter “no” followed by the
command you entered to change the priority. For example, to change the priority of a VRRP Owner
back to 255 from 99, enter the following command.
Brocade(config-if-e10000-1/6-vrid-1)# no owner priority 99
You cannot set the priority to 255 using the owner priority command.
VRRP-extended slow start
In a VRRP-E configuration, if a Master router goes down, the Backup router with the highest priority
takes over after expiration of the dead interval. When the original Master router comes back up
again, it takes over from the Backup router (which became the Master router when the original
Master router went down). By default, this transition from Backup router back to Master router
takes place after expiration of the dead interval.
You can configure the VRRP-E slow start timer feature, which causes a specified amount of time to
elapse between the time the original Master router is restored and when it takes over from the
Backup router (This range is currently set to between 1-57600 seconds). This interval allows time
for OSPF convergence when the Master is restored.