Avaya Configuring Interface and Router Redundancy Instrukcja Użytkownika Pobierz pdf (Strona 23)

114079 Rev. B

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Chapter 1

Interface Redundancy Overview

Interface redundancy provides backup of one interface by another within a single

router. It protects your network from partial router or installation failures; it also

enables you to maintain data transmission for critical interfaces without the

expense of two routers.

You conﬁgure interfaces to be members of an

interface redundancy group

. The

group includes an

active interface,

which performs normal routing and bridging

services, and one or more

redundant interfaces,

which take over if the active

interface fails.

You can conﬁgure multiple interface redundancy groups on the same router.

Active Interface

The active interface performs normal bridging and routing services.

When you conﬁgure interface redundancy, you select one interface on the router

to have the highest priority to be the active interface. That interface is the

designated primary interface

. Under normal circumstances, the designated

primary interface is the active interface for the redundancy group. If the active

interface fails, however, another interface in the group becomes the new active

interface.

Redundant Interfaces

All members of an interface redundancy group other than the active interface are

redundant interfaces. A redundant interface has no function other than to serve as

a backup.

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Avaya Configuring Interface and Router Redundancy Instrukcja Użytkownika Strona 23