Reference Guide

114 | Access Control Lists (ACLs)
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• Two or more match clauses within the same route-map sequence have different match commands,
matching a packet against these clauses is a logical AND operation.
• If no match is found in a route-map sequence, the process moves to the next route-map sequence until
a match is found, or there are no more sequences.
• When a match is found, the packet is forwarded; no more route-map sequences are processed.
• If a continue clause is included in the route-map sequence, the next or a specified route-map
sequence is processed after a match is found.
Configuration Task List for Route Maps
You configure route maps in the ROUTE-MAP mode and apply them in various commands in the
ROUTER RIP and ROUTER OSPF modes.
The following list includes the configuration tasks for route maps:
• Create a route map on page 114 (mandatory)
• Configure route map filters (optional)
• Configure a route map for route redistribution (optional)
• Configure a route map for route tagging (optional)
Create a route map
Route maps, ACLs, and prefix lists are similar in composition because all three contain filters, but route
map filters are do not contain the permit and deny actions found in ACLs and prefix lists. Route map filters
match certain routes and set or specify values.
To create a route map and enter the ROUTE-MAP mode, use the following command in the
CONFIGURATION mode:
The default action is permit and the default sequence number starts at 10. When the keyword
deny is used
in configuring a route map, routes that meet the match filters are not redistributed.
To view the configuration, use the
show config command in the ROUTE-MAP mode (Figure 244).
Command Syntax Command Mode Purpose
route-map map-name [permit | deny]
[
sequence-number]
CONFIGURATION Create a route map and assign it a unique name.
The optional
permit and deny keywords are the
action of the route map. The default is
permit.
The optional parameter
seq allows you to assign a
sequence number to the route map instance.