KeepAlive on GRE Tunnel

[7g.abate]

I have cofigured an Ipsec connection over a GRE Tunnel, I would understand how the keepalive command works on the tunnel interface; I have two Cisco 827 router (IOS: 12.2(4 YA))

Thanks in advance

Bye GV

[cjacinto]

GRE keepalive was not introduced till 12.2.8T see:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122t/122t8/grekpliv.htm

ISAKMP keepalive is explained on: http://www.cisco.com/warp/public/cc/so/neso/vpn/vpne/vpne_an.htm

[jerry.roy]

Hello,

Can someone please give me an example scenario why I would use the GRE keepalive command?

I have Eigrp Inside of GRE inside IPSEc with a Hub and spoke network.

Thanks