Brocade BigIron RX Series Configuration Guide - Manual (Page 519)

BigIron RX Series Configuration Guide 441
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Configuring optional VSRP parameters
15
The <num> parameter specifies the TTL and can be from 1 – 255. The default TTL is 2.
Changing the hello interval
The Master periodically sends Hello messages to the Backups. To change the Hello interval, enter
a command such as the following at the configuration level for the VRID.
BigIron RX(config-vlan-200-vrid-1)# hello-interval 10
Syntax: [no] hello-interval <units>
The <units> parameter specifies the interval which and can be from 1 – 84 units. The default is 1
(1 unit = 100 milliseconds).
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 milliseconds a Backup waits for a Hello message from the
Master before determining that the Master is dead. The default is 300 milliseconds. 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.
BigIron RX(config-vlan-200-vrid-1)# dead-interval 30
Syntax: [no] dead-interval <units>
The <units> parameter specifies the interval which and can be from 3 – 84 units (1 unit = 100
milliseconds). The default is 3 (3 units = 300 milliseconds).
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.
BigIron RX(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 6 seconds by default. You can change the interval to be up to 360 seconds.