Creating Tracking Policies; Associating A Tracking Policy With A Virtual Router - Alcatel OmniSwitch 6800 Series Network Configuration Manual

Configuration Overview

Creating Tracking Policies

To create a tracking policy, use the
router's priority and the VLAN, slot/port, or IP address to be tracked. For example:
-> vrrp track 3 enable priority 50 vlan 2
In this example, a tracking policy ID (3) is created and enabled for VLAN 2. If VLAN 2 goes down, a
virtual router associated with this track ID will have its priority decremented by 50. Note that the enable
keyword administratively activates the tracking policy, but the policy does not take effect until it is associ-
ated with one or more virtual routers (see the next section).
Note the following:
A virtual router must be administratively disabled before a tracking policy for the virtual router can be
•
added.
VRRP tracking does not override IP address ownership (the IP address owner will always have prior-
•
ity to become master, if it is available).

Associating a Tracking Policy With a Virtual Router

To associate a tracking policy with a virtual router, use the
tracking policy ID number. In this example, virtual router 6 on VLAN 4 is disabled first so that tracking
policy 3 may be associated with it:
-> vrrp 6 4 disable
-> vrrp 6 4 track-association 3
When the virtual router is re-enabled, tracking policy 3 will be used for that virtual router. If VLAN 2 goes
down, VRID 6 will have its priority decremented by 50.
A VLAN tracking policy should not be associated with a virtual router on the same VLAN. For example:
-> vrrp 5 2 track-association 3
This configuration is allowed but will not really have an effect. If VLAN 2 goes down, this virtual router
goes down as well and the tracking policy is not applied.
Note. A master and a backup virtual router should not be tracking the same IP address; otherwise, when
the IP address becomes unreachable, both virtual routers will have their priorities decremented, and the
backup may temporarily take over if the master discovers that the IP address is unreachable before the
backup.
Typically you should not configure the same IP address tracking policies on physical VRRP routers that
back up each other; otherwise, the priority will be decremented for both master and backup when the
entity being tracked goes down.
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vrrp track command and specify the amount to decrease a virtual
vrrp track-association
OmniSwitch 6800 Series Network Configuration Guide
Configuring VRRP
command with the
November 2004