IP tunnel architecture
The IP Tunnel architecture in the figure is used in this example.
Tunnel configuration
A tunnel can be seen as a set of two static routing entries in nodes on the edge of the
OSI network and the corresponding static entries in the routing table. The term tunnel
may be misleading because it is often associated with connections which must be set
up in advance. In this case, only some routing and mapping information needs to be
provisioned and no communication between two systems is needed to set up the
“tunnel” between them. To avoid confusion, it is better to speak of encapsulation and
to think of the OSI network as a non broadcast multiple access (NBMA) subnetwork
within the IP network.
Management communication setup
Dual stack with tunneling (DSwT)
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365-312-807R7.2
Issue 4, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
4-19
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