Configuring VRRP and VRRPE

Table 12.1: VRRP and VRRPE Parameters (Continued)

Parameter

Description

Default

See page...

 

 

 

 

Backup priority

A numeric value that determines a Backup’s

VRRP – 255 for the

12-15

 

preferability for becoming the Master for the VRID.

Owner; 100 for each

 

 

During negotiation, the router with the highest priority

Backup

 

 

becomes the Master.

VRRPE – 100 for all

 

 

 

 

 

• VRRP – The Owner has the highest priority

Backups

 

 

(255); other routers can have a priority from 3 –

 

 

 

254.

 

 

 

• VRRPE – All routers are Backups and have the

 

 

 

same priority by default.

 

 

 

If two or more Backups are tied with the highest

 

 

 

priority, the Backup interface with the highest IP

 

 

 

address becomes the Master for the VRID.

 

 

 

 

 

 

Suppression of

A router that is running RIP normally advertises

Disabled

12-16

RIP

routes to a backed up VRID even when the router is

 

 

advertisements

not currently the active router for the VRID.

 

 

 

Suppression of these advertisements helps ensure

 

 

 

that other routers do not receive invalid route paths

 

 

 

for the VRID.

 

 

 

 

 

 

Hello interval

The number of seconds between Hello messages

One second

12-4

 

from the Master to the Backups for a given VRID.

 

12-16

 

The interval can from 1 – 84 seconds.

 

 

 

 

 

 

 

 

Dead interval

The number of seconds a Backup waits for a Hello

Three times the Hello

12-4

 

message from the Master for the VRID before

Interval plus one-half

12-16

 

determining that the Master is no longer active.

second

 

 

 

If the Master does not send a Hello message before

 

 

 

the dead interval expires, the Backups negotiate

 

 

 

(compare priorities) to select a new Master for the

 

 

 

VRID.

 

 

 

 

 

 

Backup Hello

The number of seconds between Hello messages

Disabled

12-4

interval

from a Backup to the Master.

60 seconds when

12-17

 

 

 

The message interval can be from 60 – 3600

enabled

 

 

seconds.

 

 

 

You must enable the Backup to send the messages.

 

 

 

The messages are disabled by default on Backups.

 

 

 

The current Master (whether the VRRP Owner or a

 

 

 

Backup) sends Hello messages by default.

 

 

 

 

 

 

Track port

Another routing switch port or virtual interface whose

None

12-5

 

link status is tracked by the VRID’s interface.

 

12-17

 

 

 

 

If the link for a tracked interface goes down, the

 

 

 

VRRP or VRRPE priority of the VRID interface is

 

 

 

changed, causing the devices to renegotiate for

 

 

 

Master.

 

 

 

 

 

 

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