November 1999
Intermediate to advanced
576 pages
15h 3m
English
book
Large-Scale IP Network Solutions (CCIE Professional Development)
by Khalid Raza - CCIE, Mark Turner
Content preview from Large-Scale IP Network Solutions (CCIE Professional Development)
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Route Summarization
IS-IS does not include the concept of filtering, so link-state protocols do not have the liberty of filtering information when they are propagated. The only location in which filtering could occur is at the point of origin. To filter out propagation of a redistributed route in IS-IS, you can use the summary-address command to limit the routes from propagating L1 and L2. For L1, the router summary-address command is used to summarize external routes only. For L2, the summary-address command is used for summarizing external routes as well as L1 routes.
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