Hi Tim, The fact that you are seeing the physical interface (gig0/0) is normal, as it is the recursive adjacency and ultimately the interface through which will exit the box. You can do a "show ip cef 0.0.0.0 0.0.0.0 int" if you want to see more details about the recursion. The issue is somewhere else.
Regards Le 2013-09-07 14:17, « Tim Huffman » <[email protected]> a écrit : >I have a customer with a strange problem that I can duplicate on a >similar set up. We are both using Cisco 2911 routers. His is running >version 15.1(4)M5 (base license), and mine is running 15.0(1)M6. > >What's happening is this: There is a GRE tunnel set up between his router >(a 2911) and mine (a 6503/sup720). We are running BGP over that GRE >tunnel. The tunnel is up, and the two routers can pass traffic through >the tunnel, but only to the router interfaces, NOT to devices on the >customer LAN. On the 6503 side, the routes are installed normally, and >CEF shows that traffic destined for his LAN should be going over the >tunnel. > >However, on the 2911 side, although the tunnel is up, and BGP is working, >traffic is not being encapsulated, and devices attached to his LAN cannot >get out to the Internet. When I do a 'sh ip route' things look fine. If I >do a 'sh ip cef' things look fine. But if I do a 'sh ip cef exact-route' >things get weird. > >Here's what I'm seeing on his router: > >#sh ip route >... >B* 0.0.0.0/0 [1/0] via 10.254.20.25 > >#sh ip cef >Prefix Next Hop Interface >0.0.0.0/0 10.254.20.25 Tunnel5 > >Everything looks good. Here's where it gets weird: > >#sh ip cef exact-route 199.195.246.10 63.250.224.22 >199.195.246.10 -> 63.250.224.22 => IP adj out of GigabitEthernet0/0, addr >63.250.226.93 > >Even if I take out the BGP route, and try STATICALLY routing traffic over >the connection, I get similar results: >#sh ip route >... >S* 0.0.0.0/0 [1/0] via 10.254.20.25 > >#sh ip cef exact-route 199.195.246.10 63.250.224.50 >199.195.246.10 -> 63.250.224.50 => IP adj out of GigabitEthernet0/0, addr >63.250.226.93 > >Is there something I'm missing? Could this be an IOS bug? Both 2911s are >running the 'base' license, is routing over simple GRE something that's >only enabled on some other license? > >-- >Tim Huffman > > >_______________________________________________ >cisco-nsp mailing list [email protected] >https://puck.nether.net/mailman/listinfo/cisco-nsp >archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
