Reference Guide

● Route-maps use commands to decide what to do with traffic. To remove the match criteria in a route-map, use the no
match command.
● In a BGP route-map, if you repeat the same match statements; for example, a match metric, with different values in the
same sequence number, only the last match and set values are taken into account.
Configure match metric
OS10(config)# route-map hello
OS10(conf-route-map)# match metric 20
View route-map
OS10(conf-route-map)# do show route-map
route-map hello, permit, sequence 10
Match clauses:
metric 20
Change match
OS10(conf-route-map)# match metric 30
View updated route-map
OS10(conf-route-map)# do show route-map
route-map hello, permit, sequence 10
Match clauses:
metric 30
To filter the routes for redistribution, combine route-maps and IP prefix lists. If the route or packet matches the configured
criteria, the OS10 processes the route based on the permit or deny configuration of the prefix list.
When a route-map and a prefix list combine:
● For a route map with the permit action:
○ If a route matches a prefix-list set to deny, the route is denied
○ If a route matches a prefix-list set to permit, the route is permitted and any set of actions are apply
● For a route map with the deny action:
○ If a route matches a prefix-list set to deny, the route is denied
○ If a route matches a prefix-list set to permit, the route is denied
View both IP prefix-list and route-map configuration
OS10(conf-router-bgp-neighbor-af)# do show ip prefix-list
ip prefix-list p1:
seq 1 deny 10.1.1.0/24
seq 10 permit 0.0.0.0/0 le 32
ip prefix-list p2:
seq 1 permit 10.1.1.0/24
seq 10 permit 0.0.0.0/0 le 32
View route-map configuration
OS10(conf-router-bgp-neighbor-af)# do show route-map
route-map test1, deny, sequence 10
Match clauses:
ip address prefix-list p1
Set clauses:
route-map test2, permit, sequence 10
Match clauses:
ip address prefix-list p1
Set clauses:
route-map test3, deny, sequence 10
Match clauses:
ip address prefix-list p2
Set clauses:
route-map test4, permit, sequence 10
Match clauses:
570
Access Control Lists