Frame-Relay impact on GRE Tunnels?

Hi Everyone,
Does Frame-Relay have any impact on GRE Tunnels? I am labbing some tunnels up and they seem to work everywhere but where they pass through a Frame-Relay. If so is there a solution to this? I dont think this is covered in the R&S CCNA or CCNP official books.

Thanks so much!

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negru_tudor

Hmmm..can't say off the top of my head, but maybe you need to do a static frame-relay map on both routers to bind the Tunnel Interface IPs to the interface DLCIs? I'll try to lab it tomorrow and will let you know

Interesting topic.

DCD

Post the output of show ip interface brief, show frame-relay lmi , show frame-relay pvc, show frame-relay map. It should work.

negru_tudor

Okay, i tested this now in GNS3 but I had no problem getting a GRE tunnel up over a Frame-Relay link. Maybe double check the tunnel source and destination statements again and the FR config ?

Node Man

Hey guys. Thanks! I'll try to post up some snaps and the topology when I get home later.

Node Man

Hi Everyone,
Here is the topology. Small change to the story: A tunnel on the edge of the frame-cloud works. A tunnel one hop further away from the cloud does not work. I have no idea why not. Any advise appreciated.

topology.jpg

networker050184

No frame relay has no impact. You're talking different layers here that have no interaction. Address resolution for the next hop could be an issue depending on your config though.