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Setting Pre-empt Mode
When a Master router goes down, the Backup with the highest priority takes over the IP
addresses associated with the Master. By default, when the original Master comes back
up, it takes over from the Backup router that assumed its role as Master. When a VRRP
router does this, it is said to be in pre-empt mode. Pre-empt mode is enabled by default on
the IA. You can prevent a VRRP router from taking over from a lower-priority Master by
disabling pre-empt mode. To do this, enter the following command in Configure mode:
Disable pre-empt mode for a
virtual router.
Note:
If the IP address owner is available, then it will always take over as the Master,
regardless of whether pre-empt mode is on or off.
Setting an Authentication Key
By default, no authentication of VRRP packets is performed on the IA. You can specify a
clear-text password to be used to authenticate VRRP exchanges. To enable authentication,
enter the following command in Configure mode:
Set an authentication key for a
virtual router.
where <key> is a clear-text password.
Note:
The IA does not currently support the IP Authentication Header method of
authentication.
Internet Appliance User Reference Manual
Chapter 5: VRRP Configuration Guide
ip-redundancy set vrrp
<interface>
preempt-mode disabled
ip-redundancy set vrrp
<interface>
auth-type text auth-key
<vrid>
interface
<vrid>
interface
<key>
73
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