As shown in Figure 1-1, an AR3260 connects to a non-Huawei device. During the OSPF adjacency establishment, the state machine remains the Exstart state and cannot reach the Full state. As a result, routes cannot be learned correctly. During the query of information about packets obtained on the port that connects the AR3260 to the non-Huawei device, only Hello and database description (DD) packets are found.
Figure 1-1 An AR Router Fails to Establish an OSPF Adjacency with a Non-Huawei Device