August 2000
Intermediate to advanced
528 pages
12h 44m
English
Content preview from Internet Routing Architectures, Second Edition
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Appendix C. BGP Outbound Route Filter (ORF)
Outbound Route Filter (ORF) is a new BGP functionality used to minimize the number of BGP updates sent to a neighbor. This appendix provides information on BGP ORF as it relates to IOS versions 12.0ST and 12.1.
The idea is to push the locally-configured BGP prefix filter to the remote peer so that the remote peer applies this received filter as yet another outbound filter. This results in two benefits:
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The number of prefixes that are sent are reduced and thus leads to a lesser number of BGP updates.
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Less work for the local router which previously used to process all those extra updates. This might mean less transient memory consumption and less attribute and cache creation.
This appendix covers ...
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