Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) - Manual (Page 823)

Multi-Service IronWare Routing Configuration Guide 795
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Configuring additional VRRP and VRRP-E parameters
Hello interval
The Master periodically sends Hello messages to the Backups. The Backups use the Hello
messages as verification that the Master is still on-line. If the Backup routers stop receiving the
Hello messages for the period of time specified by the Dead interval, the Backup routers determine
that the Master router is dead. At this point, the Backup router with the highest priority becomes
the new Master router.
The Dead interval is internally derived from Hello Interval, by default. It is approximately 3.5 times
of the Hello Interval. Generally, if you change the Hello interval, you also should change the Dead
interval on the Backup routers.To change the Hello interval on the Master to 10 seconds for VRRP
v2 and VRRP-E v2, 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)# hello-interval 10
Syntax: [no] hello-interval value
The Hello interval can be from 1 through 84 seconds. The default is 1 second.
To change the Hello interval on the Master to 200 milliseconds for VRRP v3, 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)# hello-interval msec 200
Syntax: [no] hello-interval [msec] value
The Hello interval can be from 100 through 84000 milliseconds. The default is 1000 milliseconds.
The syntax is the same for VRRP and VRRP-E.
NOTE
VRRP-E does not support the Hello interval timer if it is set to milliseconds.
Dead interval
The Dead interval is the number of seconds a Backup waits for a Hello message from the Master
before determining that the Master is dead. When Backups determine that the Master is dead, the
Backup with the highest priority becomes the new Master. The Dead interval can be from 1 – 84
seconds. The default is internally derived by software. It is approximately 3.5 times of the Hello
interval.
To change the Dead interval on a Backup to 30 seconds for VRRP v2 and VRRP-E v2, enter the
following commands.
Brocade(config)# interface ethernet 1/5
Brocade(config-if-e10000-1/5)# ip vrrp vrid 1
Brocade(config-if-e10000-1/5-vrid-1)# dead-interval 30
Syntax: [no] dead-interval value
The Dead interval can be from 1 through 84 seconds. The default is 3.5 seconds.
To change the Dead interval on a Backup to 600 milliseconds for VRRP v3, enter the following
commands.
Brocade(config)# interface ethernet 1/5