August 2000
Intermediate to advanced
528 pages
12h 44m
English
Content preview from Internet Routing Architectures, Second Edition
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Peer Groups
Peer groups can now be configured under specific AFs, providing a considerable amount of flexibility over the old style of configuring peer groups. This section discusses both the old and new methods of configuring peer groups.
Old Style
A peer group was defined in the BGP router configuration mode. The nlri keyword was used to allow the peer group to exchange multicast prefixes. Using the nlri keyword, you could specify unicast and/or multicast. If the nlri keyword was not specified, it implied only IPv4 unicast.
The peer group members automatically inherited the unicast and/or multicast capability of the peer group. The following command syntax shows the old method of configuring peer groups:
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