I'm using this product called REX which requires to create gre tunnels in every
OSPF area and form OSPF adjacency to establish routing report.
I have successfully created several gre tunnels but now I'm stuck on this Cisco 6509 running
hybrid mode (12.2.18SXF4), and not able to form OSPF neighbor. My tunnel comes up (interface is up and up)
I can ping 192.168.95.13 or .14 from anywhere in the network but not from the router. I have tried lowering/increasing the mtu to no avail.
Any help would be appreciated.
description tunnel for OSPF-12
ip add 192.168.95.13 255.255.255.252
ip ospf message-digest-key 1 md5
tunnel source loopback1
ip mtu 1476
tunnel destination 10.21.116.57
router ospf 1
network 192.168.95.12 0.0.0.3 area 12