Hi guys,
we run 2 GRE tunnels in our network. The A end is a PE router while the B end are 2 different CPE DSL sites.
Both tunnels at the A end (PE) are using as a source a gig sub inteface which is in the same VRF
interface Tunnel40 (for branch office 1)
ip vrf forwarding example
ip address x.x.x.250 255.255.255.252
ip mtu 1476
ip tcp adjust-mss 1420
ip ospf dead-interval 60
ip ospf mtu-ignore
keepalive 10 6
tunnel source Gig x/x.z
tunnel destination x.x.x.x.
tunnel vrf example
interface Tunnel60 (for branch office 2)
the frame is as above
router ospf 1 vrf example
log-adjacency-changes
capability vrf-lite
.
.
passive-interface default
no passive-interface Tunnel40
no passive-interface Tunnel60
network x.x.x.250 0.0.0.0 area x.x.x.x
.network ......
.
CPE example
----------------
interface Tunnel1
ip address x.x.x.249 255.255.255.252
ip flow ingress
ip flow egress
ip ospf dead-interval 60
ip ospf mtu-ignore
keepalive 10 6
tunnel source Dialer1
tunnel destination z.z.z.1 ( this is the subinterafce Gig x/x.z on the PE router)
router ospf 1
router-id x.x.x.x
log-adjacency-changes
passive-interface default
no passive-interface Tunnel1
no passive-interface Vlan1
network x.x.x.x 0.0.0.0 area x.x.x.x
network x.x.x.249 0.0.0.0 area x.x.x.x
same is the config for CPE 2 ( just the frame of the commands no the ospf areas , IP s etc)
The problem is that when the tunnel fails for cpe 1 then it fails for CPE 2 exactly the same time.
Any advice.
Thanks
