Router-ID冲突导致OSPF路由环路

发布时间:  2014-09-12 浏览次数:  498 下载次数:  0
问题描述
组网:
Users------S5700--------S9306(CSS)-----------DELL server(Chassis)
S9300 version:V100R006C00SPC600
将DELL服务器业务割接至S9306后,用户反映访问某些DELL上的数据库速度变慢,响应时间长,通过ping测试发现有丢包现象,通过tracert跟踪数据包路径,发现多次跟踪路径不一致。
告警信息
Jul 30 2012 16:00:02+03:00 MHA-KWT-AGG9306-DC2Row5-10.34.3.2 %%01OSPF/4/CONFLICT_RTID_INTF(l)[0]:OSPF router ID conflict was detected on the interface. (ProcessId=1, RouterId=10.34.3.2, AreaId=0.0.0.0, InterfaceName=Vlanif102,  IpAddr=172.16.102.10, PacketSrcIp=172.16.98.10)
Jul 30 2012 15:59:58+03:00 MHA-KWT-AGG9306-DC2Row5-10.34.3.2 %%01OSPF/4/CONFLICT_RTID_INTF(l)[1]:OSPF router ID conflict was detected on the interface. (ProcessId=1, RouterId=10.34.3.2, AreaId=0.0.0.0, InterfaceName=Vlanif101,  IpAddr=172.16.101.1, PacketSrcIp=172.16.100.10)
Jul 30 2012 15:59:25+03:00 MHA-KWT-AGG9306-DC2Row5-10.34.3.2 %%01OSPF/4/CONFLICT_RTID_INTF(l)[2]:OSPF router ID conflict was detected on the interface. (ProcessId=1, RouterId=10.34.3.2, AreaId=0.0.0.0, InterfaceName=Vlanif99,  IpAddr=172.16.99.10, PacketSrcIp=172.16.98.10)
Jul 30 2012 15:59:08+03:00 MHA-KWT-AGG9306-DC2Row5-10.34.3.2 %%01OSPF/4/CONFLICT_RTID_INTF(l)[3]:OSPF router ID conflict was detected on the interface. (ProcessId=1, RouterId=10.34.3.2, AreaId=0.0.0.0, InterfaceName=Vlanif98,  IpAddr=172.16.98.10, PacketSrcIp=172.16.99.10)
Jul 30 2012 15:59:04+03:00 MHA-KWT-AGG9306-DC2Row5-10.34.3.2 %%01OSPF/4/CONFLICT_RTID_INTF(l)[4]:OSPF router ID conflict was detected on the interface. (ProcessId=1, RouterId=10.34.3.2, AreaId=0.0.0.0, InterfaceName=Vlanif100,  IpAddr=172.16.100.10, PacketSrcIp=172.16.101.1)
同上告警信息反复出现。
处理过程
检查网交换机配置、DELL服务器结构及网络线缆连接,发现DELL服务器框内嵌有C友商两块blade switch,且两块blade switch均连接到同一台S9306的同一vlan中;
处理过程:将交换机上连接DELL服务器框的接口配置成silent interface
<MHA-KWT-AGG9306-DC2Row5-10.34.3.2>system-view
[MHA-KWT-AGG9306-DC2Row5-10.34.3.2]ospf
[MHA-KWT-AGG9306-DC2Row5-10.34.3.2]silent-interface XGigabitEthernet1/1/0/25
[MHA-KWT-AGG9306-DC2Row5-10.34.3.2]silent-interface XGigabitEthernet1/1/0/26
[MHA-KWT-AGG9306-DC2Row5-10.34.3.2]silent-interface XGigabitEthernet1/1/0/27
[MHA-KWT-AGG9306-DC2Row5-10.34.3.2]silent-interface XGigabitEthernet1/1/0/28
[MHA-KWT-AGG9306-DC2Row5-10.34.3.2]silent-interface XGigabitEthernet1/1/0/29
[MHA-KWT-AGG9306-DC2Row5-10.34.3.2]quit
<MHA-KWT-AGG9306-DC2Row5-10.34.3.2>save
根因
通过采集交换机告警日志和tracert结果可以确定网络中因为router id冲突产生了OSPF路有环路
建议与总结
此故障中,DELL服务器框内嵌的C友商刀片交换机通过二层直接转发OSPF报文使其又回到了S9306上导致router id冲突,业务响应慢,所以建议在新网络运营初期,当有第三方设备接入网络时,需要考虑其架构和接入方式。

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