[R1]
Oct 17 2018 10:28:26-08:00 R1 %%01OSPF/4/NBR_CHANGE_E(l)[6]:Neighbor changes event: neighbor status changed. (ProcessId=256, NeighborAddress=2.12.12.12, NeighborEvent=HelloReceived, NeighborPreviousState=Down, NeighborCurrentState=Init) ------没有收到对方的HEELO报文或者字段没有对方的RouteID！
[R1]
Oct 17 2018 10:28:26-08:00 R1 %%01OSPF/4/NBR_CHANGE_E(l)[7]:Neighbor changes event: neighbor status changed. (ProcessId=256, NeighborAddress=2.12.12.12, NeighborEvent=2WayReceived, NeighborPreviousState=Init, NeighborCurrentState=2Way) ------选举双方收到HELLO报文、邻居字段有对方的RouteID、选举DR\BDR！
[R1]
Oct 17 2018 10:28:52-08:00 R1 %%01OSPF/4/NBR_CHANGE_E(l)[8]:Neighbor changes event: neighbor status changed. (ProcessId=256, NeighborAddress=2.12.12.12, NeighborEvent=AdjOk?, NeighborPreviousState=2Way, NeighborCurrentState=ExStart)----发空BDB报文决定主从、确定序列号！
[R1]
Oct 17 2018 10:28:57-08:00 R1 %%01OSPF/4/NBR_CHANGE_E(l)[9]:Neighbor changes event: neighbor status changed. (ProcessId=256, NeighborAddress=2.12.12.12, NeighborEvent=NegotiationDone, NeighborPreviousState=ExStart, NeighborCurrentState=Exchange)---交互DBD报文！
[R1]
Oct 17 2018 10:28:57-08:00 R1 %%01OSPF/4/NBR_CHANGE_E(l)[10]:Neighbor changes event: neighbor status changed. (ProcessId=256, NeighborAddress=2.12.12.12, NeighborEvent=ExchangeDone, NeighborPreviousState=Exchange, NeighborCurrentState=Loading)----请求、更新缺失的LSA!
[R1]
Oct 17 2018 10:28:57-08:00 R1 %%01OSPF/4/NBR_CHANGE_E(l)[11]:Neighbor changes event: neighbor status changed. (ProcessId=256, NeighborAddress=2.12.12.12, NeighborEvent=LoadingDone, NeighborPreviousState=Loading, NeighborCurrentState=Full) ------请求同步完毕LSA,发ACK确认！