21w6d: %PM-4-ERR_DISABLE: loopback error detected on Fa0/20, putting Fa0/20 in err-disable state 以上信息就明确表示由于检测到第20端口出现了环路,所以将该端口置于了err-disable状态。 查看端口的状态 Switch# show inter fa0/20 status Port Name Status Vlan Duplex Speed Type Fa0/20 link to ...
When the switch puts a port in the error-disabled state, the switch sends a message to the console that describes why it disabled the port. The example in this section provides two sample messages that show the reason for port disablement: One disablement is because of the PortFast BPD...
如果没问题,肯定是环路了,你可再找时间,对怀疑有问题的switch用拔插法,一个一个拔掉网线去查,当然,有更有效的方法,你可查看有问题的switch的所有rj45和gi口的状态,哪个有errdisable信息哪个就有问题。 switch#show interfaces status err-disabled Port Name Status Reason Fa0/22 err-disabled link-flap Fa0/37...
You can set the switch to automatically recover from an error disabled state, that way you don't have to waste your time logging in to the switch and shut/noshutting the port. See here: http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b.shtml#topicsub...
dhcp-rate-limit Enable timer to recover from dhcp-rate-limit error disable state dtp-flap Enable timer to recover from dtp-flap error disable state gbic-invalid Enable timer to recover from invalid GBIC error disable state l2ptguard Enable timer to recover from l2protocol-tunnel error disable st...
!--- CatOS switch with its port disabled. Router#show interfaces fastEthernet 6/1 statusPort Name Status Vlan Duplex Speed Type Fa6/1notconnect1 auto auto 10/100BaseTX 如果show interfaces顯示up/line protocol up(connected),但您看到其中任一命令的輸出中出現了遞增的錯誤,請參閱本文檔的常見埠和介...
%GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Gi0/1 has bad crc %PM-4-ERR_DISABLE: gbic-invalid error detected on Gi0/1, putting Gi0/1 in err-disable state %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to down %LINEPROTO-5-UPDOWN: Line protocol...
%GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port Gi0/1 has bad crc %PM-4-ERR_DISABLE: gbic-invalid error detected on Gi0/1, putting Gi0/1 in err-disable state %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to down %LINEPROTO-5-UPDOWN: Line protocol...
vmps Enable timer to recover from vmps shutdown error disable state 从列出的选项中,我们可以看出,有非常多的原因会引起端口被置于错误状态,由于我们明确的知道这台交换机上的端口是由于环路问题而被置于错误状态的,所以就可以直接键入命令: Switch(config)#errdisable recovery cause loopback ...
Switch #show int te6/0/1 status Port Name Status Vlan Duplex Speed TypeTe6/0/1 [TRUNK] swi-core01 err-disabled 1 full 10G SFP-10GBase-LRM 这条信息更加明确的表示了该端口处于err-disabled状态。既然看到了该端口是被置于了错误的状态了,我们就应该有办法将其再恢复成正常的状态。拯救步骤2:将端...