cisco tunnel mode gre multipoint move from 1801 to a 2811/7200

Unanswered Question
Oct 31st, 2008

I have a cisco 1801 that is the end point of a bunch of gre tunnels. I recently got my hands on a 7200 that we decided to change to instead. When i enter the config into the new 7200 everything seems fine but the tunnel wont go up. I have messed around with it a bit and found that this config works on a 1801 but not on my 7200 or a 2811 that i also tried.

I wonder if there is a command that comes standard on the 1801 that dont in my 7200/2811?

interface Tunnel0

ip address 10.1.1.1 255.255.255.0

no ip redirects

ip nhrp map multicast dynamic

ip nhrp network-id 100

tunnel source Loopback1

tunnel mode gre multipoint

!

interface Loopback1

ip address 192.168.1.1 255.255.255.0

This config gives me up/up on the 1801 but not on the other two. None of the tree have anything connecting to it in my tests. It feels like some thing simple that im just missing to see.

I have this problem too.
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