It is not exchanged between routers, its default value is 100 and the path with the highest local preference is preferred. So lets see if our route-map changing the bgp local preference has made any difference.Īs you can see the local preference attribute has been applied to all routes coming in from R4, if we just wanted to do it for 6.6.6.6 then we could match this network in a prefix-list and add that to the route-map.

This will mean R2 will decide to route to R4 to get to 6.6.6.6 as it has a higher local preference. We are now going to change the routing behaviour by setting the Local Preference of all routes coming in via R4 higher. Status codes: s suppressed, d damped, h history, valid, best, i - internal. The route 6.6.6.632 is being learned via R6 and we are going to try to influence the routing decision on R2 to take the path via the longer AS path through R4 and R5.Īll routers are addressed with the interface ip relevant to the router.Īs local preference is higher up the decision process if we can change that we can influence the routing over the shortest AS-path choice.

Cisco asr bgp soft reset