â– Prefix trees
â– Route maps
The remainder of this section provides detailed information about using these features
with BGP. Before proceeding, please see JUNOSe IP Services Configuration Guide, for
a thorough background on how these features work in general.
Types of BGP Route Maps
A route map consists of match clauses and set clauses. Match clauses, which consist
of a match command, specify the attribute values that determine whether a route
matches the route map. Set clauses, which consist of a set command, modify the
specified attributes of routes that pass all match clauses in the route map.
BGP route maps can be applied to inbound routes, outbound routes, and redistributed
routes. BGP route maps are of two types, those that support both match and set
clauses, and those that support only match clauses.
The match-and-set route maps consist of the route maps configured with any of the
commands listed in Table 14 on page 71.
Table 14: Commands That Create Match-and-Set Route Maps
global import mapaggregate-address attribute-map
neighbor route-map inbgp dampening route-map
neighbor route-map outexport map
redistribute route-mapimport map
table-mapglobal export map
BGP supports the clauses listed in Table 15 on page 71 for match-and-set route maps.
Table 15: Clauses Supported in BGP Match-and-Set Route Maps
set as-path prependmatch as-path
set comm-list deletematch community
set communitymatch distance
set dampeningmatch extcommunity
set extcommunitymatch ip address
set ip next-hopmatch ip next-hop
set local-preferencematch level
Configuring BGP Routing Policy â– 71
Chapter 1: Configuring BGP Routing
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