he show ip ospf neighbor command displays a list of all OSPF routers with which you have established a neighbor relationship. The following describes the command output:
* Neighbor ID: the Router ID (RID) of the neighboring router
* Pri: the interface priority of the neighboring router, which is used to determine which router should serve the function of a Designated Router (DR)
* State: the functional state of the neighboring router
* Dead Time: the period that the router will wait to hear a Hello packet from this neighbor before declaring the neighbor down
* Address: the IP address of the neighboring router on this subnet
* Interface: the local interface over which the neighbor relationship (adjacency) was formed

The output for neighbor 192.168.45.2 is as follows:

192.168.45.2 2 FULL/BDR 00:00:24 10.1.0.5 FastEthernet0/0

This indicates that the interface priority of neighbor 192.168.45.2 is 2. The default OSPF interface priority is 1, and the highest interface priority determines the designated router (DR) for a subnet. This same line reveals that this neighbor is currently the backup designated router (BDR) for this segment, which indicates that another router became the DR. It can be then be assumed that the DR router has an interface priority higher than 2. (The router serving the DR function is not present in the truncated sample output.)

The output for the two neighbors discovered on F0/1 is as follows:

192.168.90.3 1 FULL/DR 00:00:32 10.5.5.2 FastEthernet0/1
192.168.90.1 1 FULL/BDR 00:00:23 10.5.5.4 FastEthernet0/1

This output indicates that router 192.168.90.3 is the DR, and router 192.168.90.1 is the BDR for this network. Since there can only be one DR and BDR per segment, this indicates that the local router is neither the DR nor the BDR. (OSPF considers these DROther routers.)

The fact that multiple DRs are listed in this output indicates that RouterA2 is connected to more than one multi-access segment, since each segment will elect a DR.

It cannot be determined if this router is the DR for subnet 10.1.0.0. The output indicates that router 192.168.45.2 is the BDR for this network, but with the truncated output, it cannot be determined if this router is the DR.

The DR for the network connected to Fa0/1 does not have a router ID of 10.5.5.2. The Address field of the show ip ospf neighbor command indicates the IP address of the neighbor's interface, not the router ID of the neighbor.

The DR for the serial subnet is not 192.168.85.1, since point-to-point serial interfaces do not elect DRs and BDRs. This is indicated by the output below:
192.168.85.1 1 FULL/- 00:00:33 10.6.4.10 Serial0/1