IP RPF issue

[alain.bider]

Hi all,

We have some troubles with Remote office connection when using an specific ISP. This ISP his off course not singled-homed and has Reverse Path Forwarding enabled.

I know that provisions for asymmetrical flows (when outbound traffic goes out one link and returns via a different link) need to be designed into the filters on the border routers of the ISP.

Any config example that could help me??

Many Thanks

Alain

[pedroquiroga]

Hi, we use RPF in this way:

ip verify unicast source reachable-via rx. In customers who only have one Internet connection (for us).

ip verify unicast source reachable-via any. In customers who only have one Internet connection (one of them for us).

this config must be made it on the customer access router (on the isp).