Summary Cont

Cisco.com

• You must configure propagation of BGP communities on the routers on a per-neighbor basis; otherwise, the BGP communities are removed from the outgoing BGP updates.

• You can use community-lists to match against the community attribute as a method of route selection.

• A route-map is used to match networks that carry a subset of communities that are permitted by the community-list.

• You can view communities only if you use the show ip bgp prefix command.

Copyright © 2004, Cisco Systems, Inc. Route Selection Using Attributes 4-107

The PDF files and any printed representation for this material are the property of Cisco Systems, Inc., for the sole use by Cisco employees for personal study. The files or printed representations may not be used in commercial training, and may not be distributed for purposes other than individual self-study.

For additional information, refer to these resources:

■ For information on BGP communities, refer to "BGP Case Studies" at the following URL: http://www.cisco.com/warp/public/459/bgp-toc.html#communityattribute

■ For further information on BGP communities, refer to "Configuring BGP" at the following URL:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/np1_c/1cprt1/1c bgp.htm#xtocid34

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