R1#debug ip ospf adj
*Sep 23 19:35:38.739: OSPF: 1.1.1 .1 address 192.168.10.1 . FastEthernet0/0 is dead, state DOWN
*Sep 23 19:35:38.739: OSPF: Neighbor change Event . interface FastEthernet0/0
*Sep 23 19:35:38.739: OSPF: DR/BDR election . FastEthernet0/0
*Sep 23 19:35:38.739: OSPF: Elect BDR 0.0.0 .0
*Sep 23 19:35:38.739: OSPF: Elect DR 192.168.235.1
*Sep 23 19:35:38.739: OSPF: Elect BDR 0.0.0 .0
*Sep 23 19:35:38.743: OSPF: Elect DR 192.168.235.1
*Sep 23 19:35:38.743: DR: 192.168.235.1 (Id) BDR: none
*Sep 23 19:35:38.743: OSPF: 192.168.235.1 address 192.168.10.2 . FastEthernet0/0 is dead, state DOWN
*Sep 23 19:47:40.403: OSPF: Cannot see ourself in hello from 192.168.235.1 . FastEthernet0/0, state INIT[EC2]
*Sep 23 19:35:38.743: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.235.1 . FastEthernet0/0 from FULL to DOWN, Neighbor Down: Interface down or detached
*Sep 23 19:35:38.747: OSPF: DR/BDR election . FastEthernet0/0
*Sep 23 19:35:38.747: OSPF: Elect BDR 0.0.0 .0
*Sep 23 19:35:38.747: OSPF: Elect DR 0.0.0 .0
*Sep 23 19:35:38.747: DR: none BDR: none
*Sep 23 19:35:38.747: OSPF: Remember old DR 192.168.235.1 (id)
*Sep 23 19:35:38.819: OSPF: i_up : interface is down
*Sep 23 19:35:39.243: OSPF: Build router LSA for area 0, router ID 1.1.1 .1, seq 0x80000001
*Sep 23 19:35:47.459: OSPF: 2 Way Communication to 192.168.235.1 . FastEthernet0/0, state 2WAY
*Sep 23 19:35:47.459: OSPF: Backup seen Event before WAIT timer . FastEthernet0/0
*Sep 23 19:35:47.459: OSPF: DR/BDR election . FastEthernet0/0
*Sep 23 19:35:47.459: OSPF: Elect BDR 1.1.1 .1
*Sep 23 19:35:47.463: OSPF: Elect DR 192.168.235.1
*Sep 23 19:35:47.463: OSPF: Elect BDR 1.1.1 .1
*Sep 23 19:35:47.463: OSPF: Elect DR 192.168.235.1
*Sep 23 19:35:47.463: DR: 192.168.235.1 (Id) BDR: 1.1.1 .1 (Id)
*Sep 23 19:35:47.535: OSPF: Rcv DBD from 192.168.235.1 . FastEthernet0/0 seq 0x1921 opt 0x52 flag 0x7 len 32 mtu 1500 state EXSTART
*Sep 23 19:35:47.535: OSPF: NBR Negotiation Done. We are the SLAVE
*Sep 23 19:35:47.583: OSPF: Rcv DBD from 192.168.235.1 . FastEthernet0/0 seq 0x1922 opt 0x52 flag 0x3 len 52 mtu 1500 state EXCHANGE
*Sep 23 19:35:47.583: OSPF: Send DBD to 192.168.235.1 . FastEthernet0/0 seq 0x1922 opt 0x52 flag 0x0 len 32
*Sep 23 19:35:47.587: OSPF: sent LS REQ packet to 192.168.10.2, length 12
*Sep 23 19:35:47.607: OSPF: Exchange Done with 192.168.235.1 . FastEthernet0/0
*Sep 23 19:35:47.611: OSPF: Synchronized with 192.168.235.1 . FastEthernet0/0, state FULL
*Sep 23 19:35:47.611: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.235.1 . FastEthernet0/0 from LOADING to FULL, Loading Done
*Sep 23 19:35:47.967: OSPF: Build router LSA for area 0, router ID 1.1.1 .1, seq 0x80000002
*Sep 23 19:35:53.347: OSPF: Build router LSA for area 0, router ID 1.1.1 .1, seq 0x80000005
*Sep 23 19:35:57.419: OSPF: Neighbor change Event . interface FastEthernet0/0
*Sep 23 19:35:57.419: OSPF: DR/BDR election . FastEthernet0/0
*Sep 23 19:35:57.419: OSPF: Elect BDR 1.1.1 .1
*Sep 23 19:35:57.419: OSPF: Elect DR 192.168.235.1
*Sep 23 19:35:57.419: DR: 192.168.235.1 (Id) BDR: 1.1.1 .1 (Id)
如果是在DR上重启OSPF进程的话，也大致相同，只是原来DR的位置会被BDR顶替上。
