RIP route-map

Usage of ripd's route-map support.

Optional argument route-map MAP_NAME can be added to each redistribute statement.

     redistribute static [route-map MAP_NAME]
     redistribute connected [route-map MAP_NAME]
     .....
     

Cisco applies route-map _before_ routes will exported to rip route table. In current Zebra's test implementation, ripd applies route-map after routes are listed in the route table and before routes will be announced to an interface (something like output filter). I think it is not so clear, but it is draft and it may be changed at future.

Route-map statement (see Route Map) is needed to use route-map functionality.

match interface word

Route Map

This command match to incoming interface. Notation of this match is different from Cisco. Cisco uses a list of interfaces - NAME1 NAME2 ... NAMEN. Ripd allows only one name (maybe will change in the future). Next - Cisco means interface which includes next-hop of routes (it is somewhat similar to "ip next-hop" statement). Ripd means interface where this route will be sent. This difference is because "next-hop" of same routes which sends to different interfaces must be different. Maybe it'd be better to made new matches - say "match interface-out NAME" or something like that.

match ip address word	Route Map
match ip address prefix-list word	Route Map

Match if route destination is permitted by access-list.

match ip next-hop A.B.C.D

Route Map

Cisco uses here <access-list>, ripd IPv4 address. Match if route has this next-hop (meaning next-hop listed in the rip route table - "show ip rip")

match metric <0-4294967295>

Route Map

This command match to the metric value of RIP updates. For other protocol compatibility metric range is shown as <0-4294967295>. But for RIP protocol only the value range <0-16> make sense.

set ip next-hop A.B.C.D

Route Map

This command set next hop value in RIPv2 protocol. This command does not affect RIPv1 because there is no next hop field in the packet.

set metric <0-4294967295>

Route Map

Set a metric for matched route when sending announcement. The metric value range is very large for compatibility with other protocols. For RIP, valid metric values are from 1 to 16.