In the large-scale network, partial packets delay or dropped may exist due to much CPU and memory
are occupied caused by lots of packet transmission. If the Hello packets are handled over
dead-interval, the corresponding adjacency will be disconnected. In this case, you can enable the
two-way-maintain function for the packets such as DD, LSU, LSR and LSAck packets from a neighbor
in the network (except for the Hello packets), avoiding the neighbor invalidation caused by delayed or
dropped Hello packets.
The following example disables the OSPF two-way-maintain function.
Ruijie(config)# routerospf1
Ruijie(config-router)# notwo-way-maintain