S9300由于链路双工协商问题导致ospf邻接关系一直卡在exchange状态

发布时间:  2014-05-26 浏览次数:  203 下载次数:  0
问题描述
S9300--光转---光转---其它厂商设备
S9300与对端厂商设备ospf配置均无问题,但是ospf邻接状态一直卡在exchange状态
         OSPF Process 1 with Router ID 10.1.1.109
                  Peer Statistic Informations
-------------------------------------------------------------------
Area Id         Interface                  Neighbor id      State       
0.0.0.9         Vlanif1                    10.1.1.189       Full       
0.0.0.9         Vlanif2                    10.1.1.1         Full       
0.0.0.9         Vlanif5                    10.1.1.189       Full       
0.0.0.9         Vlanif9                    10.1.1.189       Full       
0.0.0.9         Vlanif16                   10.1.1.189       Full       
0.0.0.9         Vlanif101                  10.1.1.189       Full       
0.0.0.9         Vlanif102                  10.1.1.189       Full       
0.0.0.9         Vlanif103                  10.1.1.189       Full       
0.0.0.9         Vlanif104                  10.1.1.189       Full       
0.0.0.9         Vlanif105                  10.1.1.189       Full       
0.0.0.9         Vlanif106                  10.1.1.189       Full       
0.0.0.9         Vlanif107                  10.1.1.189       Full       
0.0.0.9         Vlanif3                    10.1.1.1         Exchange   
-------------------------------------------------------------------
<ZXJF-7F-S9303-1.1>display ospf peer Vlanif3
        OSPF Process 1 with Router ID 10.1.1.189
                 Neighbors
Area 0.0.0.9 interface 10.17.100.42(Vlanif3)'s neighbors
Router ID: 10.1.1.1         Address: 10.17.100.41
   State: ExStart  Mode:Nbr is  Slave  Priority: 128
   DR: 10.17.100.41  BDR: 10.17.100.42  MTU: 0
   Dead timer due in 37  sec
   Neighbor is up for 00:00:00
   Authentication Sequence: [ 0 ]
告警信息
Apr 14 2014 17:16:19 ZXJF-7F-S9303-1.1 %%01OSPF/3/NBR_CHG_DOWN(l): Neighbor even
t:neighbor state changed to Down. (ProcessId=1, NeighborAddress=10.17.100.41, Ne
ighborEvent=InactivityTimer, NeighborPreviousState=Exchange, NeighborCurrentStat
e=Down)
处理过程
从S9300 ping对端设备直连IP,可以ping通,检查两端设备配置均正常
debugging ospf packet dd
debug ethernet packet interface Vlanif 3
清除相应物理接口计数,发现出方向单播数据包在增加,入方向单播数据包一直未增加,怀疑DD数据包被丢弃
从S9300 带上参数-S 200 ping 对端设备直连IP,无法ping通
debug ip icmp发现ping包已正常发出,未收到回复数据包
将S9300换成PC,PC 使用大包ping对端设备直连IP,可以正常ping通,怀疑S9300与光电转换器链路协商有问题
更换光电转换器后问题解决
根因
由于DD报文无法正常交互导致一直卡在exchange状态
建议与总结
OSPF一直卡在exchange状态处理router-id冲突,MTU不匹配以外,还需要关注DD报文是否正常交互

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