解決cisco的端口顯示err-disable1的方法: 導致這樣的情況可能是因為線路不通,物理指示燈滅或者顯示為橙色(不同平台指示燈狀態不同) show interface 輸出顯示接口狀態: FastEthernet0/47 is down, line protocol is down (err-disabled) 接口狀態是err-disable. sw1#show interfaces status Port Name Status Vlan Duplex Speed Type Fa0/47 err-disabled 1 auto auto 10/100BaseTX 如果出現了接口狀態為err-disable,show interfaces status err-disabled命令能查看觸發err-disable的原因。 下面示例原因為bpduguard,在連接了交換機的端口配置了spanning-tree bpduguard enable. sw1#show interfaces status err-disabled Port Name Status Reason Fa0/47 err-disabled bpduguard 接口產生err-disable的原因可以由以下的命令來查看,系統缺省的配置是所有列出的原因都能導致接口被置為err-disable. sw1#show errdisable detect ErrDisable Reason Detection status ----------------- ---------------- udld Enabled bpduguard Enabled security-violatio Enabled channel-misconfig Enabled psecure-violation Enabled dhcp-rate-limit Enabled unicast-flood Enabled vmps Enabled pagp-flap Enabled dtp-flap Enabled link-flap Enabled l2ptguard Enabled gbic-invalid Enabled loopback Enabled dhcp-rate-limit Enabled unicast-flood Enabled 從列表中,我們可以看出常見的原因有udld,bpduguard,link-flap以及loopback等。 具體由什麼原因導致當前接口err-disable可以由show interface status err-disable來查看。 在接口模式下采用shutdown,no shutdown進行手動的激活。 在缺省配置下,一旦接口被置為err-disable,IOS將不會試圖恢復接口。 這個可以由show errdisable recovery來查看,timer status下面所有的值都是disable. 下面的示例中,由於手工配置了bpduguard恢復,所以timer status的值變為Enable. sw1#show errdisable recovery ErrDisable Reason Timer Status ----------------- -------------- udld Disabled bpduguard Enabled security-violatio Disabled channel-misconfig Disabled vmps Disabled pagp-flap Disabled dtp-flap Disabled link-flap Disabled l2ptguard Disabled psecure-violation Disabled gbic-invalid Disabled dhcp-rate-limit Disabled unicast-flood Disabled loopback Disabled Timer interval: 300 seconds Interfaces that will be enabled at the next timeout: Interface Errdisable reason Time left(sec) --------- ----------------- -------------- Fa0/47 bpduguard 217 配置IOS重新激活errdisable的接口,使用以下命令: sw1(config)#errdisable recovery cause bpduguard 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 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 state link-flap Enable timer to recover from link-flap error disable state loopback Enable timer to recover from loopback detected 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 security-violation Enable timer to recover from 802.1x violation disable state udld Enable timer to recover from udld error disable state unicast-flood Enable timer to recover from unicast flood disable state vmps Enable timer to recover from vmps shutdown error disable 配置完上述命令後,IOS在一段時間後試圖恢復被置為err-disable的接口,這段時間缺省為300秒。 但是,如果引起err-disable的源沒有根治,在恢復工作後,接口會再次被置為err-disable. 調整err-disable的超時時間,可以使用以下命令: sw1(config)#errdisable recovery interval ? <30-86400> timer-interval(sec) 可以調整在30-86400秒,缺省是300秒。 如果產生err-disable的原因是udld,下面有一條命令非常管用: sw1#udld reset No ports are disabled by UDLD. 解決端口出現err-disabled問題 關於接口處於err-disable的故障排查 故障癥狀: 線路不通,物理指示燈滅或者顯示為橙色(不同平台指示燈狀態不同) show interface 輸出顯示接口狀態: FastEthernet0/47 is down, line protocol is down (err-disabled) 接口狀態是err-disable. sw1#show interfaces status Port Name Status Vlan Duplex Speed Type Fa0/47 err-disabled 1 auto auto 10/100BaseTX 如果出現了接口狀態為err-disable,show interfaces status err-disabled命令能查看觸發err-disable的原因。 下面示例原因為bpduguard,在連接了交換機的端口配置了spanning-tree bpduguard enable. sw1#show interfaces status err-disabled Port Name Status Reason Fa0/47 err-disabled bpduguard 接口產生err-disable的原因可以由以下的命令來查看,系統缺省的配置是所有列出的原因都能導致接口被置為err-disable. sw1#show errdisable detect ErrDisable Reason Detection status ----------------- ---------------- udld Enabled bpduguard Enabled security-violatio Enabled channel-misconfig Enabled psecure-violation Enabled dhcp-rate-limit Enabled unicast-flood Enabled vmps Enabled pagp-flap Enabled dtp-flap Enabled link-flap Enabled l2ptguard Enabled gbic-invalid Enabled loopback Enabled dhcp-rate-limit Enabled unicast-flood Enabled 從列表中,我們可以看出常見的原因有udld,bpduguard,link-flap以及loopback等。 具體由什麼原因導致當前接口err-disable可以由show interface status err-disable來查看。 在接口模式下采用shutdown,no shutdown進行手動的激活。 在缺省配置下,一旦接口被置為err-disable,IOS將不會試圖恢復接口。 這個可以由show errdisable recovery來查看,timer status下面所有的值都是disable. 下面的示例中,由於手工配置了bpduguard恢復,所以timer status的值變為Enable. sw1#show errdisable recovery ErrDisable Reason Timer Status ----------------- -------------- udld Disabled bpduguard Enabled security-violatio Disabled channel-misconfig Disabled vmps Disabled pagp-flap Disabled dtp-flap Disabled link-flap Disabled l2ptguard Disabled psecure-violation Disabled gbic-invalid Disabled dhcp-rate-limit Disabled unicast-flood Disabled loopback Disabled Timer interval: 300 seconds Interfaces that will be enabled at the next timeout: Interface Errdisable reason Time left(sec) --------- ----------------- -------------- Fa0/47 bpduguard 217 配置IOS重新激活errdisable的接口,使用以下命令: sw1(config)#errdisable recovery cause bpduguard 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 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 state link-flap Enable timer to recover from link-flap error disable state loopback Enable timer to recover from loopback detected 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 security-violation Enable timer to recover from 802.1x violation disable state udld Enable timer to recover from udld error disable state unicast-flood Enable timer to recover from unicast flood disable state vmps Enable timer to recover from vmps shutdown error disable 配置完上述命令後,IOS在一段時間後試圖恢復被置為err-disable的接口,這段時間缺省為300秒。 但是,如果引起err-disable的源沒有根治,在恢復工作後,接口會再次被置為err-disable. 調整err-disable的超時時間,可以使用以下命令: sw1(config)#errdisable recovery interval ? <30-86400> timer-interval(sec) 可以調整在30-86400秒,缺省是300秒。 如果產生err-disable的原因是udld,下面有一條命令非常管用: sw1#udld reset
解決cisco的端口顯示err-disable1的方法: 導致這樣的情況可能是因為線路不通,物理指示燈滅或者顯示為橙色(不同平台指示燈狀態不同) show interface 輸出顯示接口狀態: FastEthernet0/47 is down, line protocol is down (err-disabled) 接口狀態是err-disable. sw1#show interfaces status Port Name Status Vlan Duplex Speed Type Fa0/47 err-disabled 1 auto auto 10/100BaseTX 如果出現了接口狀態為err-disable,show interfaces status err-disabled命令能查看觸發err-disable的原因。 下面示例原因為bpduguard,在連接了交換機的端口配置了spanning-tree bpduguard enable. sw1#show interfaces status err-disabled Port Name Status Reason Fa0/47 err-disabled bpduguard 接口產生err-disable的原因可以由以下的命令來查看,系統缺省的配置是所有列出的原因都能導致接口被置為err-disable. sw1#show errdisable detect ErrDisable Reason Detection status ----------------- ---------------- udld Enabled bpduguard Enabled security-violatio Enabled channel-misconfig Enabled psecure-violation Enabled dhcp-rate-limit Enabled unicast-flood Enabled vmps Enabled pagp-flap Enabled dtp-flap Enabled link-flap Enabled l2ptguard Enabled gbic-invalid Enabled loopback Enabled dhcp-rate-limit Enabled unicast-flood Enabled 從列表中,我們可以看出常見的原因有udld,bpduguard,link-flap以及loopback等。 具體由什麼原因導致當前接口err-disable可以由show interface status err-disable來查看。 在接口模式下采用shutdown,no shutdown進行手動的激活。 在缺省配置下,一旦接口被置為err-disable,IOS將不會試圖恢復接口。 這個可以由show errdisable recovery來查看,timer status下面所有的值都是disable. 下面的示例中,由於手工配置了bpduguard恢復,所以timer status的值變為Enable. sw1#show errdisable recovery ErrDisable Reason Timer Status ----------------- -------------- udld Disabled bpduguard Enabled security-violatio Disabled channel-misconfig Disabled vmps Disabled pagp-flap Disabled dtp-flap Disabled link-flap Disabled l2ptguard Disabled psecure-violation Disabled gbic-invalid Disabled dhcp-rate-limit Disabled unicast-flood Disabled loopback Disabled Timer interval: 300 seconds Interfaces that will be enabled at the next timeout: Interface Errdisable reason Time left(sec) --------- ----------------- -------------- Fa0/47 bpduguard 217 配置IOS重新激活errdisable的接口,使用以下命令: sw1(config)#errdisable recovery cause bpduguard 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 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 state link-flap Enable timer to recover from link-flap error disable state loopback Enable timer to recover from loopback detected 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 security-violation Enable timer to recover from 802.1x violation disable state udld Enable timer to recover from udld error disable state unicast-flood Enable timer to recover from unicast flood disable state vmps Enable timer to recover from vmps shutdown error disable 配置完上述命令後,IOS在一段時間後試圖恢復被置為err-disable的接口,這段時間缺省為300秒。 但是,如果引起err-disable的源沒有根治,在恢復工作後,接口會再次被置為err-disable. 調整err-disable的超時時間,可以使用以下命令: sw1(config)#errdisable recovery interval ? <30-86400> timer-interval(sec) 可以調整在30-86400秒,缺省是300秒。 如果產生err-disable的原因是udld,下面有一條命令非常管用: sw1#udld reset No ports are disabled by UDLD. 解決端口出現err-disabled問題 關於接口處於err-disable的故障排查 故障癥狀: 線路不通,物理指示燈滅或者顯示為橙色(不同平台指示燈狀態不同) show interface 輸出顯示接口狀態: FastEthernet0/47 is down, line protocol is down (err-disabled) 接口狀態是err-disable. sw1#show interfaces status Port Name Status Vlan Duplex Speed Type Fa0/47 err-disabled 1 auto auto 10/100BaseTX 如果出現了接口狀態為err-disable,show interfaces status err-disabled命令能查看觸發err-disable的原因。 下面示例原因為bpduguard,在連接了交換機的端口配置了spanning-tree bpduguard enable. sw1#show interfaces status err-disabled Port Name Status Reason Fa0/47 err-disabled bpduguard 接口產生err-disable的原因可以由以下的命令來查看,系統缺省的配置是所有列出的原因都能導致接口被置為err-disable. sw1#show errdisable detect ErrDisable Reason Detection status ----------------- ---------------- udld Enabled bpduguard Enabled security-violatio Enabled channel-misconfig Enabled psecure-violation Enabled dhcp-rate-limit Enabled unicast-flood Enabled vmps Enabled pagp-flap Enabled dtp-flap Enabled link-flap Enabled l2ptguard Enabled gbic-invalid Enabled loopback Enabled dhcp-rate-limit Enabled unicast-flood Enabled 從列表中,我們可以看出常見的原因有udld,bpduguard,link-flap以及loopback等。 具體由什麼原因導致當前接口err-disable可以由show interface status err-disable來查看。 在接口模式下采用shutdown,no shutdown進行手動的激活。 在缺省配置下,一旦接口被置為err-disable,IOS將不會試圖恢復接口。 這個可以由show errdisable recovery來查看,timer status下面所有的值都是disable. 下面的示例中,由於手工配置了bpduguard恢復,所以timer status的值變為Enable. sw1#show errdisable recovery ErrDisable Reason Timer Status ----------------- -------------- udld Disabled bpduguard Enabled security-violatio Disabled channel-misconfig Disabled vmps Disabled pagp-flap Disabled dtp-flap Disabled link-flap Disabled l2ptguard Disabled psecure-violation Disabled gbic-invalid Disabled dhcp-rate-limit Disabled unicast-flood Disabled loopback Disabled Timer interval: 300 seconds Interfaces that will be enabled at the next timeout: Interface Errdisable reason Time left(sec) --------- ----------------- -------------- Fa0/47 bpduguard 217 配置IOS重新激活errdisable的接口,使用以下命令: sw1(config)#errdisable recovery cause bpduguard 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 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 state link-flap Enable timer to recover from link-flap error disable state loopback Enable timer to recover from loopback detected 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 security-violation Enable timer to recover from 802.1x violation disable state udld Enable timer to recover from udld error disable state unicast-flood Enable timer to recover from unicast flood disable state vmps Enable timer to recover from vmps shutdown error disable 配置完上述命令後,IOS在一段時間後試圖恢復被置為err-disable的接口,這段時間缺省為300秒。 但是,如果引起err-disable的源沒有根治,在恢復工作後,接口會再次被置為err-disable. 調整err-disable的超時時間,可以使用以下命令: sw1(config)#errdisable recovery interval ? <30-86400> timer-interval(sec) 可以調整在30-86400秒,缺省是300秒。 如果產生err-disable的原因是udld,下面有一條命令非常管用: sw1#udld reset