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Introduction

Provisioning all the entries in the Routing Tables of all the nodes can be a considerable

effort and is error prone, particularly when networks comprise hundreds of nodes. It

would be desirable to have a mechanism which reduces some of the necessary

provisioning to alleviate this problem. Such a mechanism has been designed. It is an

Alcatel-Lucent proprietary mechanism called "Tunnel Auto Provisioning" (TAP).

TAP principle

The principle behind TAP is that IP routes known by DSwT nodes at the edge of the

OSI network are advertised across the OSI network to the other DSwT nodes which

can then insert these routes into their own Routing Tables. This basic principal is

illustrated in the figure below.

Example of two DSwT nodes advertising the IP networks they can reach. Each Node

learns the others advertised routes it hears and places them in its Routing Table.

Notice that the advertising node is not limited to giving one IP prefix but could

provide a list of all the IP prefixes it can reach, if appropriate, each one resulting in a

routing table entry.

4-26

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Issue 4, May 2007

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Dswt Tunnel Auto Provisioning (Tap) - Alcatel-Lucent 1643 AMS User's Operation Manual