一、清除OSPF故障计数
reset OSPF counters（表示用来将OSPF计数器清零）
二、案例拓扑
1、接口down（查看启用OSPF各接口状态）
<Huawei>display ospf error
OSPF Process 1 with Router ID 1.1.1.1
OSPF error statistics
General packet errors:
0 : IP: received my own packet 0 : Bad packet
0 : Bad version 0 : Bad checksum
0 : Bad area id 0 : Drop on unnumbered interface
0 : Bad virtual link 0 : Bad authentication type
0 : Bad authentication key 0 : Packet too small
0 : Packet size > ip length 0 : Transmit error
1 : Interface down 0 : Unknown neighbor
0 : Bad net segment 0 : Extern option mismatch
0 : Router id confusion
2、双方area区域不一致（相连的设备OSPF区域要一致）
[Huawei]display ospf error
OSPF Process 1 with Router ID 1.1.1.1
OSPF error statistics
General packet errors:
0 : IP: received my own packet 0 : Bad packet
0 : Bad version 0 : Bad checksum
4 : Bad area id 0 : Drop on unnumbered interface
0 : Bad virtual link 0 : Bad authentication type
0 : Bad authentication key 0 : Packet too small
0 : Packet size > ip length 0 : Transmit error
0 : Interface down 0 : Unknown neighbor
0 : Bad net segment 0 : Extern option mismatch
0 : Router id confusion
3、认证开启错误
A设备开启了OSPF认证，B设备没有开启认证
设备A:
ospf 1 router-id 1.1.1.1
area 0.0.0.0
authentication-mode simple cipher J"8a#i1FF(EBi%T]n/.IO9"#
network 192.168.1.0 0.0.0.255
network 192.168.0.0 0.0.0.255
设备B：
ospf 2 router-id 2.2.2.2
area 0.0.0.0
network 192.168.0.0 0.0.0.255
network 192.168.2.0 0.0.0.255
[Huawei]display ospf error
OSPF Process 1 with Router ID 1.1.1.1
OSPF error statistics
General packet errors:
0 : IP: received my own packet 3 : Bad packet
0 : Bad version 0 : Bad checksum
0 : Bad area id 0 : Drop on unnumbered interface
0 : Bad virtual link 3 : Bad authentication type
0 : Bad authentication key 0 : Packet too small
0 : Packet size > ip length 0 : Transmit error
0 : Interface down 0 : Unknown neighbor
0 : Bad net segment 0 : Extern option mismatch
0 : Router id confusion
4、密码认证错误
A设备开启OSPF认证密码为：ABC，B设备开启认证密码为：ABCD
设备A：
ospf 1 router-id 1.1.1.1
area 0.0.0.0
authentication-mode simple cipher J"8a#i1FF(EBi%T]n/.IO9"#
network 192.168.1.0 0.0.0.255
network 192.168.0.0 0.0.0.255
设备B：
ospf 2 router-id 2.2.2.2
area 0.0.0.0
authentication-mode simple cipher zs+H1Hqdc.EBi%T]n/.I[PR#
network 192.168.0.0 0.0.0.255
network 192.168.2.0 0.0.0.255
<Huawei>display ospf error
OSPF Process 1 with Router ID 1.1.1.1
OSPF error statistics
General packet errors:
0 : IP: received my own packet 14 : Bad packet
0 : Bad version 0 : Bad checksum
0 : Bad area id 0 : Drop on unnumbered interface
0 : Bad virtual link 0 : Bad authentication type
14 : Bad authentication key 0 : Packet too small
0 : Packet size > ip length 0 : Transmit error
0 : Interface down 0 : Unknown neighbor
0 : Bad net segment 0 : Extern option mismatch
0 : Router id confusion