System information

BSR 64000 Configuration and Management Guide
9-36
Enabling Route Summarization
RIPv2 supports route summarization, which condenses routing information and
reduces the router load and the perceived network complexity. The larger the network,
the more important route summarization is. Without route summarization, a router
retains a route to every subnet in its network. With summarization, the router can
reduce some sets of routes to a single advertisement. Route propagation and routing
information are reduced significantly.
In Figure 9-1, Router Dallas maintains one route for all destination networks
beginning with B, and Router Providence maintains one route for all destination
networks beginning with A. Router Dallas tracks all routes because it exists on the
boundary between A and B.
Figure 9-1 Route Summarization
AS 300
AS 100
AS 200
Boston
LA
NY
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