Avaya Configuring AppleTalk Services Bedienungsanleitung PDF herunterladen (Seite 72)

Configuring AppleTalk Services

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In addition, the following features are not available in the Bay Networks

implementation of AURP:

• Loop detection

• Network number remapping

• Conﬁgured alternative backup paths

• Network hiding

The following sections provide general guidelines for understanding and using

some of the most important AURP parameters.

Setting the Update Rate

You should carefully consider how often you want to update your AppleTalk

network. A smaller update rate (for example, 10 seconds) causes routers to

converge more quickly on a network, making most changes to the network appear

quickly in the Chooser application. Though a smaller update rate provides users

with quick access to any zones added to a network, it may also prove to be

expensive (for example, in a dial-on-demand conﬁguration, or over Frame Relay).

A larger update rate (for example, 1 hour) causes routers to converge less quickly,

making changes to the network appear less quickly in the Chooser application.

Zones may still appear in the Chooser even though their associated networks are

no longer reachable across the tunnel. Also, new network information does not

become accessible until the update occurs. This could prove frustrating for some

users.

For information on editing the Update Rate parameter, refer to “Editing AURP

Parameters” in Chapter 4.

AURP uses the following packets to update its AppleTalk routing information:

• Routing Information Update (RI-Upd)

• Routing Information Request (RI-Req)

• Routing Information Response (RI-Rsp)

• Routing Information Acknowledgment (RI-Ack)

• Zone Information Request (ZI-Req)

• Zone Information Response (ZI-Rsp)

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Avaya Configuring AppleTalk Services Bedienungsanleitung Seite 72