If it cannot make the original connection it will show up/down Can you route from the source to the tunnel destination and are there any firewalls that would block the GRE protocol? Can the destination route back to the source loopback1?
-----Original Message----- From: cisco-nsp-boun...@puck.nether.net [mailto:cisco-nsp-boun...@puck.nether.net] On Behalf Of Drew Weaver Sent: Wednesday, July 13, 2011 11:20 AM To: cisco-nsp Subject: [c-nsp] IP GRE tunnel up/down Howdy, I am trying to establish a GRE/IP tunnel over the Internet: interface Tunnel1 description GRE-Tunnel ip unnumbered GigabitEthernet7/0/0 no ip directed-broadcast tunnel source Loopback1 tunnel destination x.x.x.x end Pretty much no matter what I do the interface status is always: Tunnel1 is up, line protocol is down I've read that tunnels should be up/up unless you are using keepalives and it detects a failure. Does anyone have any insight they can share on this? thanks, -Drew _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
