Avaya Configuring VRRP Services Manual do Utilizador descarregar pdf (Página 35)

304138-A Rev 00

Glossary-1

Glossary

An IP packet periodically broadcast by the master virtual router to prevent any

of the backup virtual routers from becoming the master virtual router.

backup virtual router

One of a set of VRRP routers available to become the master virtual router. A

router may be the master virtual router and/or the backup virtual router for

many virtual routers.

critical IP interface

A local IP interface associated with a virtual router. When the state of this

interface changes, the virtual router switches roles. For example, if you

designate IP address 1.1.1.1 as the critical IP address for virtual router 1 on

router B, and IP address 1.1.1.1 fails, then virtual router 1 on router B is no

longer the master virtual router, and a backup virtual router becomes the

master virtual router.

master virtual router

The VRRP router that assumes responsibility for forwarding data packets

received at the MAC address associated with its virtual router, and answers

ARP requests for its IP address. A router may be the master virtual router and/

or the backup virtual router for many virtual routers.

primary IP address

The real IP interface address used as the source IP address for the IP packets

carrying advertisements.

priority

The value that determines whether a virtual router serves as the master or

backup virtual router. The VRRP router with the highest priority becomes the

master virtual router. The value of 255 is reserved for the router that owns the

IP address associated with the virtual router. The value of 0 is reserved for the

master virtual router to indicate that it is releasing responsibility for the virtual

router. The range of 1 to 254 is available for VRRP routers backing up the

virtual router. The default priority is 100.

virtual MAC address

A unicast MAC address associated with each virtual router and used as the

source MAC address for VRRP advertisements. The master virtual router uses

this address instead of its physical MAC address in all communication.

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Avaya Configuring VRRP Services Manual do Utilizador Página 35