4-23z OSPF supports packet authentication and receives only those packets that are successfullyauthenticated. If packet authentication fails, no adjacencies will be established.z The authentication modes for all routers in an area must be consistent. The authenticationpasswords for all routers on a network segment must also be consistent.Configuring the MTU Field in DD PacketsBy default, an interface uses value 0 instead of its actual MTU value when transmitting DD packets.After the following configuration, the actual interface MTU is filled in the MTU field in DD packets.Follow these steps to configure to fill the MTU field when an interface transmits DD packets:To do... Use the command... RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —Enable the interface tofill in the MTU field whentransmitting DD packetsospf mtu-enableRequiredBy default, the MTU value is 0 when aninterface transmits DD packets. That is, theactual MTU value of the interface is not filled in.Enabling OSPF Logging of Neighbor State ChangesFollow these steps to enable OSPF logging of neighbor state changes:To do... Use the command... RemarksEnter system view system-view —Enter OSPF view ospf [ process-id [ router-idrouter-id ] ] —Enable the OSPF logging ofneighbor state changes log-peer-change RequiredDisabled by defaultConfiguring OSPF Network ManagementFollow these steps to configure OSPF network management (NM):To do... Use the command... RemarksEnter system view system-view —Configure OSPF MIBbinding ospf mib-binding process-idOptionalBy default, OSPF MIB is bound tothe first enabled OSPF process.
