![]() ![]() It will eventually synchronize the LSDB of each router so that all LSAs of R1 to R4 are registered in the LSDB of R1 to R4. Initially, each router has only its own LSA registered in its LSDB. ![]() In the following figure, four OSPF routers, R1 to R4, are connected on the Ethernet. Each OSPF router on the multi-access network will then eventually synchronize its LSDB.Ĭonsider a simple multi-access network example. In a multi-access network such as Ethernet, two or more OSPF routers may be connected. Synchronization of LSDB over Ethernet (multi-access network) This section explains in detail the mechanism of synchronizing LSDB on a multi-access network by DR. The OSPF router that is neither the DR nor the BDR in a multi-access network is the DROTHER. If the DR goes down, the BDR becomes the next DR. ![]() For area 0 which is our main site, the tunnel config looks like. The DR is an OSPF router representing a multi-access network. I used ip ospf cost to specify which link is to be used on the San Diego side.
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