Alcatel 9000 Guía de usuario descargar pdf (Pagina 371)

100

101

Configuring VRRP Configuration Overview

OmniSwitch 6800/6850/9000 Network Configuration Guide June 2006 page 19-13

Creating Tracking Policies

To create a tracking policy, use the vrrp track command and specify the amount to decrease a virtual

router’s priority and the slot/port, IP address, or IP interface name to be tracked. For example:

-> vrrp track 3 enable priority 50 20.1.1.3

In this example, a tracking policy ID (3) is created and enabled for IP address 20.1.1.3. If this address goes

inactive, 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 associated 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 vrrp track-association command with 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.

1 2 ... 366 367 368 369 370 371 372 373 374 375 376 ... 701 702

Comentarios a estos manuales

Sin comentarios

Alcatel 9000 Guía de usuario Pagina 371

Comentarios a estos manuales

Relacionado con productos y manuales para Software Alcatel 9000