February 2000
Intermediate to advanced
387 pages
7h 36m
English
Content preview from IP Routing Protocols
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PNNI HIERARCHY AND THE LOWEST HIERARCHICAL LEVEL
The PNNI architecture is based on a hierarchical structure. Nodes are associated with a level in a hierarchy and nodes that belong to the same hierarchy are in the same peer group. An example of the PNNI hierarchy is provided in Figure 9-5. The routing hierarchy is now divided into two hierarchies; that is, peer groups. For this example, the two groups are called peer group A and peer group B.
Figure 9-5. The Lowest Hierarchical Level and Two Peer Groups
The peer group is a set of nodes that are grouped together to create a routing hierarchy. And here, we introduce the concepts of a logical ...
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