Avaya Configuring Interface and Router Redundancy Manuel d'utilisateur télécharger pdf (Page 74)

Configuring Interface and Router Redundancy

B-6 114079 Rev. A

To provide redundancy for this wide area network (WAN):

1. Deﬁne the remote interface on the other side of the WAN as a resource in

the conﬁguration of Router A.

This allows the primary and best-secondary router selection process to

consider the WAN interface status, and to trigger role switching.

2. Conﬁgure Router B to have a higher priority than Router A to become

the primary router.

If the WAN interface becomes nonfunctional for any reason, the resource deﬁned

for it is unreachable. This causes Router A, the current primary router, to cease

being the best primary router, and a role switch occurs. Router B, with its dial-up

connection, becomes the primary router.

The effect is that the dial-up connection is a redundant interface for the WAN

connection. Note that in this case, you can disable the dial-up synchronous

interface in the secondary conﬁguration ﬁle on Router B and enable it in the

primary conﬁguration ﬁle to avoid the cost of two WAN connections to the remote

router.

Router A and Router B can be at the branch ofﬁce; the remote router is at the

central or regional ofﬁce.

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 80

Pas de commentaire

Avaya Configuring Interface and Router Redundancy Manuel d'utilisateur Page 74