如何解決cisco的端口顯示err-disable1
Cisco依靠自身的技術(shù)和對網(wǎng)絡(luò)經(jīng)濟(jì)模式的深刻理解,成為了網(wǎng)絡(luò)應(yīng)用的成功實(shí)踐者之一,那么你知道如何解決cisco的端口顯示err-disable1嗎?下面是學(xué)習(xí)啦小編整理的一些關(guān)于如何解決cisco的端口顯示err-disable1的相關(guān)資料,供你參考。
解決cisco的端口顯示err-disable1的方法:
導(dǎo)致這樣的情況可能是因?yàn)榫€路不通,物理指示燈滅或者顯示為橙色(不同平臺指示燈狀態(tài)不同)
show interface 輸出顯示接口狀態(tài):
FastEthernet0/47 is down, line protocol is down (err-disabled)
接口狀態(tài)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(xiàn)了接口狀態(tài)為err-disable,show interfaces status err-disabled命令能查看觸發(fā)err-disable的原因。
下面示例原因?yàn)閎pduguard,在連接了交換機(jī)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(chǎn)生err-disable的原因可以由以下的命令來查看,系統(tǒng)缺省的配置是所有列出的原因都能導(dǎo)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l(fā)oopback等。
具體由什么原因?qū)е庐?dāng)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(jìn)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(fù)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,由于手工配置了bpduguard恢復(fù),所以timer status的值變?yōu)镋nable.
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
配置完上述命令后,IOS在一段時間后試圖恢復(fù)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(fù)工作后,接口會再次被置為err-disable.
調(diào)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(diào)整在30-86400秒,缺省是300秒。
如果產(chǎn)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(xiàn)err-disabled問題
關(guān)于接口處于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(不同平臺指示燈狀態(tài)不同)
show interface 輸出顯示接口狀態(tài):
FastEthernet0/47 is down, line protocol is down (err-disabled)
接口狀態(tài)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(xiàn)了接口狀態(tài)為err-disable,show interfaces status err-disabled命令能查看觸發(fā)err-disable的原因。
下面示例原因?yàn)閎pduguard,在連接了交換機(jī)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(chǎn)生err-disable的原因可以由以下的命令來查看,系統(tǒng)缺省的配置是所有列出的原因都能導(dǎo)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l(fā)oopback等。
具體由什么原因?qū)е庐?dāng)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(jìn)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(fù)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,由于手工配置了bpduguard恢復(fù),所以timer status的值變?yōu)镋nable.
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
配置完上述命令后,IOS在一段時間后試圖恢復(fù)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(fù)工作后,接口會再次被置為err-disable.
調(diào)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(diào)整在30-86400秒,缺省是300秒。
如果產(chǎn)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.
看過文章“思科48口交換機(jī)如何配置ACL"的人還看了: