Cisco 交换机端口故障分析（一）

Cisco 交换机端口故障分析（一）

 

两台Catalyst 6000 之间互联的GE２／１出现了errdisable故障，what's up告警，链路中断。　 
　　　　 
　　查看log记录：　 
　　Sep 4 19:18:50 UTC: %PM-SP-4-ERR_DISABLE: link-flap error detected on Gi2/1, putting Gi2/1 in err-disable state 
　　Sep 4 19:19:09 UTC: %OSPF-5-ADJCHG: Process 108, Nbr **** on Vlan12 from FULL to DOWN, Neighbor Down: Dead timer expired 
　　Sep 5 00:03:34 UTC: %SYS-5-CONFIG_I: Configured from console by gcc&et on vty0 
　　Sep 5 00:07:10 UTC: %SYS-5-CONFIG_I: Configured from console by gcc&et on vty0 
　　Sep 5 00:08:13 UTC: %PM-SP-4-ERR_RECOVER: Attempting to recover from link-flap err-disable state on Gi2/1 
　　Sep 5 00:08:58 UTC: %OSPF-5-ADJCHG: Process 108, Nbr **** on Vlan12 from LOADING to FULL, Loading Done 
　　Sep 5 05:14:07 UTC: %OSPF-5-ADJCHG: Process 108, Nbr **** on Vlan12 from LOADING to FULL, Loading Done 
　　Sep 5 06:06:17 UTC: %OSPF-5-ADJCHG: Process 108, Nbr **** on Vlan12 from FULL to DOWN, Neighbor Down: Dead timer expired 
　　Sep 5 06:06:47 UTC: %OSPF-5-ADJCHG: Process 108, Nbr **** on Vlan12 from LOADING to FULL, Loading Done 
　　Sep 5 06:14:34 UTC: %OSPF-5-ADJCHG: Process 108, Nbr **** on Vlan12 from FULL to DOWN, Neighbor Down: Dead timer expired 
　　Sep 5 06:14:37 UTC: %OSPF-5-ADJCHG: Process 108, Nbr **** on Vlan12 from LOADING to FULL, Loading Done 
　　Sep 5 06:26:58 UTC: %OSPF-5-ADJCHG: Process 108, Nbr **** on Vlan12 from LOADING to FULL, Loading Done　 
　　　 
　　注：　由于为真实的网络环境，为了不必要的安全隐患，以＊＊＊＊代替IP地址，请各位见谅！　 
　　
　　故障处理： 
　　
　　进入configure终端模式，具体如下：　 
　　SW1>en 
　　Password: 
　　SW1#conf t 
　　Enter configuration commands, one per line. End with CNTL/Z. 
　　SW1(config)#err? 
　　errdisable 
　　
　　SW1#errdi 
　　SW1#errdisable ? 
　　detect Error disable detection 
　　recovery Error disable recovery 
　　
　　SW1(config)#errdisable re 
　　SW1(config)#errdisable recovery ? 
　　cause Enable error disable recovery for application 
　　interval Error disable recovery timer value 
　　
　　SW1(config)#errdisable recovery cau 
　　SW1(config)#errdisable recovery cause ? 
　　all Enable timer to recover from all causes 
　　bpduguard Enable timer to recover from BPDU Guard error disable state 
　　channel-misconfig Enable timer to recover from channel misconfig disable state 
　　dtp-flap Enable timer to recover from dtp-flap error disable state 
　　l2ptguard Enable timer to recover from l2protocol-tunnel error disable state 
　　link-flap Enable timer to recover from link-flap error disable state 
　　pagp-flap Enable timer to recover from pagp-flap error disable state 
　　psecure-violation Enable timer to recover from psecure violation disable state 
　　udld Enable timer to recover from udld error disable state 
　　
　　SW1(config)#errdisable recovery cause all ? 
　　 
　　
　　SW1(config)#errdisable recovery cause all 　 
　　
　　执行此命令后　　不久端口就显示connected状态　What's up 告警消失。 
　　
　　
　　////////////////////////////
　　Log Buffer (4096 bytes):
　　: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　Jul 2 13:04:47.533 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from FULL to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:05:30.128 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　Jul 2 13:06:50.126 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from INIT to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:07:40.137 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　Jul 2 13:17:49.948 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from FULL to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:18:33.135 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　Jul 2 13:18:46.175 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from FULL to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:19:29.134 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　Jul 2 13:21:13.507 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from FULL to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:21:56.106 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　Jul 2 13:30:22.296 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from FULL to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:31:05.091 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　Jul 2 13:31:56.185 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from FULL to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:32:31.120 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from 2WAY to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:33:14.083 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　Jul 2 13:34:09.958 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from FULL to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:34:52.113 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　Jul 2 13:37:54.624 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from FULL to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:38:07.063 BJT: %PM-4-ERR_DISABLE: link-flap error detected on Gi1/1, putting Gi1/1 in err-disable state
　　Jul 2 13:38:35.347 BJT: %PM-4-ERR_RECOVER: Attempting to recover from link-flap err-disable state on Gi1/1
　　Jul 2 13:39:18.085 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　Jul 2 13:39:55.432 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from FULL to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:40:13.488 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from 2WAY to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:40:56.075 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　Jul 2 13:44:03.098 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from FULL to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:44:42.121 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from 2WAY to DOWN, Neighbor Down: Interface down or detached
　　Jul 2 13:45:06.340 BJT: %PM-4-ERR_DISABLE: link-flap error detected on Gi1/1, putting Gi1/1 in err-disable state
　　Jul 2 13:45:32.083 BJT: %PM-4-ERR_RECOVER: Attempting to recover from link-flap err-disable state on Gi1/1
　　Jul 2 13:46:26.066 BJT: %OSPF-5-ADJCHG: Process 100, Nbr 172.19.253.2 on GigabitEthernet1/1 from LOADING to FULL, Loading Done
　　
　　
　　//////////////////////////////////
　　 no file verify auto
　　errdisable recovery cause udld
　　errdisable recovery cause bpduguard
　　errdisable recovery cause security-violation
　　errdisable recovery cause channel-misconfig
　　errdisable recovery cause pagp-flap
　　errdisable recovery cause dtp-flap
　　errdisable recovery cause link-flap
　　errdisable recovery cause gbic-invalid
　　errdisable recovery cause l2ptguard
　　errdisable recovery cause psecure-violation
　　errdisable recovery cause dhcp-rate-limit
　　errdisable recovery cause unicast-flood
　　errdisable recovery cause vmps
　　errdisable recovery cause storm-control
　　errdisable recovery cause arp-inspection
　　errdisable recovery interval 30
　　spanning-tree mode pvst
　　spanning-tree extend system-id
　　power redundancy-mode redundant
　　! 
　　!
　　!
　**********************************

防止err-disable,使用以下命令：errdisable recovery cause udld
errdisable recovery cause bpduguard
errdisable recovery cause security-violation
errdisable recovery cause channel-misconfig
errdisable recovery cause pagp-flap
errdisable recovery cause dtp-flap
errdisable recovery cause link-flap
errdisable recovery cause psecure-violation
errdisable recovery cause vmps
errdisable recovery cause gbic-invalid
errdisable recovery cause loopback
errdisable recovery interval 30

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posted @ 2012-12-30 12:00 李欢欢 阅读(...) 评论(...) 编辑 收藏