OSPF virtual link with message digest authentication

Dis-contiguous area Non-backbone area has to be converged with backbone area (area 0) in order for OSPF to learn the routes. The following example has area 100 discontiguous with backbone area, the solution is either to use GRE tunnel or virtual link. Virtual link 1. Router-id is used for virtual-link neighbor not the IP address … Continue reading OSPF virtual link with message digest authentication