Configuration manual

To create route map instances, use these commands. There is no limit to the number of match
commands per route map, but the convention is to keep the number of match filters in a route map low.
Set commands do not require a corresponding match command.
Configuring Set Conditions
To configure a set condition, use the following commands.
• Generate a tag to be added to redistributed routes.
CONFIG-ROUTE-MAP mode
set automatic-tag
• Specify an OSPF area or ISIS level for redistributed routes.
CONFIG-ROUTE-MAP mode
set level {backbone | level-1 | level-1-2 | level-2 | stub-area}
• Specify a value for redistributed routes.
CONFIG-ROUTE-MAP mode
set metric {+ | - | metric-value}
• Specify an OSPF or ISIS type for redistributed routes.
CONFIG-ROUTE-MAP mode
set metric-type {external | internal | type-1 | type-2}
• Assign an IP address as the route’s next hop.
CONFIG-ROUTE-MAP mode
set next-hop ip-address
• Specify a tag for the redistributed routes.
CONFIG-ROUTE-MAP mode
set tag tag-value
To create route map instances, use these commands. There is no limit to the number of set commands
per route map, but the convention is to keep the number of set filters in a route map low. Set commands
do not require a corresponding
match command.
Configure a Route Map for Route Redistribution
Route maps on their own cannot affect traffic and must be included in different commands to affect
routing traffic. To apply a route map to traffic, you must call or include that route map in a command
such as the redistribute or default-information originate commands in OSPF and BGP.
Route redistribution occurs when the system learns the advertising routes from static or directly
connected routes or another routing protocol. Different protocols assign different values to redistributed
routes to identify either the routes and their origins. The metric value is the most common attribute that
is changed to properly redistribute other routes into a routing protocol. Other attributes that can be
changed include the metric type (for example, external and internal route types in OSPF) and route tag.
Use the redistribute command in OSPF, RIP, ISIS, and BGP to set some of these attributes for routes
that are redistributed into those protocols.
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