Hi,
I am trying to create a GRE tunnel between 2x N7k's and I am having trouble in getting it to establish. I know that my configuration works as I have tunnels set up between my 7k's and cisco 2901 routers. I am able to ping both ways between source and destination. Below is a sample config of what I have configured. The firewall is allowing the gre protocol, I have used packet tracer which allows the traffic, I can see this in the logs and I have other tunnels from remote sites going across the WAN to the 2nd 7k.
######### N7k01 ##############
interface tunnel 1
vrf member RED
ip address 192.168.1.1/30
ip pim sparse-mode
tunnel source loopback1
tunnel destination 192.168.1.11
tunnel use-vrf RED
no shut
interface looback 1
vrf member RED
ip address 192.168.1.10/32
####### N7K02 ###################
interface tunnel 1
vrf member RED
ip address 192.168.1.2/30
ip pim sparse-mode
tunnel source loopback1
tunnel destination 192.168.1.10
tunnel use-vrf RED
no shut
interface looback 1
vrf member RED
ip address 192.168.1.11/32
Any help would be helpful on this one as the show commands don't give to much away with the 7k's
