I am facing a peculiar issue in my network where we are having multilinks in many locations. When any one of the E1 in the multilink flaps, the reachability to the remote end of the multilink is lost for say 5 packets and comes back. Due to this OSPF and LDP neighborship over multilink goes down and comes up. This creates a huge impact in our network.
I tried configuring the following things:
1. configured keepalive 1 1 under all the E1 interfaces
2. disable fragmentation under multilink
3. configure no fair-queue under all the E1 and multilink as well
but still the problem persists.
Had anyone observed this problem before and what is the fix for this.
Any help is much appreciated.