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PowerConnect B-Series FCX Configuration Guide 373
53-1002266-01
Virtual Switch Redundancy Protocol (VSRP)
10
NOTE
The default Dead interval is three times the Hello interval plus one-half second. Generally, if you
change the Hello interval, you also should change the Dead interval on the Backups.
NOTE
If you change the timer scale, the change affects the actual number of seconds.
Changing the 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. The default is 3 seconds. This is three times the
default Hello interval.
To change the Dead interval, enter a command such as the following at the configuration level for
the VRID.
PowerConnect(config-vlan-200-vrid-1)#dead-interval 30
Syntax: [no] dead-interval <num>
The <num> parameter specifies the interval and can be from 1 – 84 seconds. The default is 3
seconds.
NOTE
If you change the timer scale, the change affects the actual number of seconds.
Changing the backup hello state and interval
By default, Backups do not send Hello messages to advertise themselves to the Master. You can
enable these messages if desired and also change the message interval.
To enable a Backup to send Hello messages to the Master, enter a command such as the following
at the configuration level for the VRID.
PowerConnect(config-vlan-200-vrid-1)#advertise backup
Syntax: [no] advertise backup
When a Backup is enabled to send Hello messages, the Backup sends a Hello message to the
Master every 60 seconds by default. You can change the interval to be up to 3600 seconds.
To change the Backup Hello interval, enter a command such as the following at the configuration
level for the VRID.
PowerConnect(config-vlan-200-vrid-1)#backup-hello-interval 180
Syntax: [no] backup-hello-interval <num>
The <num> parameter specifies the message interval and can be from 60 – 3600 seconds. The
default is 60 seconds.
NOTE
If you change the timer scale, the change affects the actual number of seconds.