日志如下
%Jan 1 14:47:02:311 2011 H3C_MSR3600_北京SDH_2M专线 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Serial1/0 changed to up. %Jan 1 14:48:05:810 2011 H3C_MSR3600_北京SDH_2M专线 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Serial1/0 changed to down. %Jan 1 14:48:05:814 2011 H3C_MSR3600_北京SDH_2M专线 OSPF/6/OSPF_LAST_NBR_DOWN: OSPF 1 Last neighbor down event: Router ID: 10.3.254.1 Local address: 10.3.251.242 Remote address: 10.3.251.241 Reason: Ospf_ifvchange. %Jan 1 14:48:05:815 2011 H3C_MSR3600_北京SDH_2M专线 OSPF/5/OSPF_NBR_CHG: OSPF 1 Neighbor 10.3.251.241(Serial1/0) changed from EXCHANGE to DOWN. %Jan 1 14:48:05:949 2011 H3C_MSR3600_北京SDH_2M专线 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Serial1/0 changed to up. %Jan 1 14:50:31:445 2011 H3C_MSR3600_北京SDH_2M专线 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Serial1/0 changed to down. %Jan 1 14:50:31:451 2011 H3C_MSR3600_北京SDH_2M专线 OSPF/6/OSPF_LAST_NBR_DOWN: OSPF 1 Last neighbor down event: Router ID: 10.3.254.1 Local address: 10.3.251.242 Remote address: 10.3.251.241 Reason: Ospf_ifvchange. %Jan 1 14:50:31:452 2011 H3C_MSR3600_北京SDH_2M专线 OSPF/5/OSPF_NBR_CHG: OSPF 1 Neighbor 10.3.251.241(Serial1/0) changed from LOADING to DOWN. %Jan 1 14:50:31:500 2011 H3C_MSR3600_北京SDH_2M专线 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Serial1/0 changed to up. %Jan 1 14:52:11:603 2011 H3C_MSR3600_北京SDH_2M专线 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Serial1/0 changed to down. %Jan 1 14:52:50:804 2011 H3C_MSR3600_北京SDH_2M专线 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Serial1/0 changed to up. %Jan 1 14:52:52:816 2011 H3C_MSR3600_北京SDH_2M专线 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Serial1/0 changed to down. %Jan 1 14:52:52:868 2011 H3C_MSR3600_北京SDH_2M专线 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Serial1/0 changed to up. %Jan 1 14:53:53:366 2011 H3C_MSR3600_北京SDH_2M专线 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Serial1/0 changed to down.
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最佳答案
串口的协议层是ppp,ppp是需要两端协商的,ppp协商没有成功,协议层就是down的
补充下,你这个接口的协议频繁的up/down,看下接口配置是不是ppp协商时间改的太小了,而且线路质量也不太好,造成ppp保活报文丢包了?接口流量有多大?这个端口理论值最高只能到2.048M,很有可能是流量超过了接口最大带宽,接口拥塞了,丢包导致的
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这说明物理链路up了,封装协议未协商成功,你对端是什么设备(品牌、型号)?和这段相连的接口用的什么封装协议,两端需设置成一样的,最好问问对端的端口配置,然后把两端的端口配置都贴上来看看
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原来都是正常的,从昨天开始就出现不正常了。基本上就是没有动过什么配置的,都用了几年了这台设备
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