Dialer Interface back up traffic problem
I have configured two Dialer interfaces in two seperate routers to test dial-back up connectivity. I have two routers at Remote site that each has its own Dialer back up Interface and I am running PPP encapsultation with one router in HUB site. There are OSPF running between the router in HUB site and two routers at remote site. There is another router in the remote site that I use T1 connectivity to connect to another router at the HUB which I use T1 circuit as the primary and these two Dialer back up as the back up.
The problem is that when two Dialer interfaces are up "I can bring them up with sending interesting traffic over the link with Pinging from CE router at the remote site to HUB router over PSTN. I am also using VRF in CEs to have multiple routing tables". The traffic will be sent over just one link. when two Dialer interfaces are up, OSPF neighbors are established and FULL adjacency are established. Both CE routers show that Dialer interfaces on each of them are up. The only way that I know there is only traffic in one interface is that when I am running ping sourcing from VRF on CE router at remote site to VRF on the HUB on One Dialer interface, Ping is successful but as soon as I start the ping from the second CE router at the remote site sourcing from VEF at the remote site to VRF at HUB site, The first ping stopped working and just the second Ping continues working although OSPF neighbors are FULL/Adjacent and both Dialer Interfaces are physically up. Could any one pleae advice what can be the reason that Ping is successful on just one Dialer interface at any given time. I tried to change the mode on Asynchronous Interface to Dedicated but that did not help. Ihave cleared OSPF process but OSPF is just fine. The problem is that ping is sucessful just on one Interface at a time. I appreciate your advice.