Solved: Instance numbers following route maps

Kevin Melton · ‎07-13-2010

I am working at a client site today, and am trying to prune some routes from one path,

and add them to another. As I examine the configuration on this specific router, I come across the following:

route-map bgp-eigrp-rm permit 10
match ip address bgp-eigrp
!
route-map eigrp-bgp-rm permit 10
match ip address eigrp-bgp
!
route-map eigrp-bgp-rm deny 20

Can anyone tell me here what the 10's and 20"s mean on the end of each of these statments? What do they pertain to?

Thanks

Kevin

Robert Taylor · ‎07-13-2010

Each route-map can have multiple sequences to it, which dictate the order by which you move through a route-map.

Once the item (packet, route prefix, etc) being sent through the route-map finds a matching statement, it will take the action dicated in that specific sequence, and then immediately exit the route-map.

For example, in this route-map:

route-map eigrp-bgp-rm permit 10
match ip address eigrp-bgp
!
route-map eigrp-bgp-rm deny 20

If a route DOES match the "eigrp-bgp" access-list, then it will be allowed (this route-map is probably used for redistribution).

If not, it will proceed to the second sequence of the route-map (which happens to be a deny all entry, since no match statement is used in conjunction with a deny type), and the route will not be redistributed.

HTH,

Rob

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Robert Taylor · ‎07-13-2010