port in error-disabled state

[ChunderPants]

Having problems with gig ports on my 2950T 48port switches going into error-disabled state? the port is configured as an trunk port. It has to be shut/no shut in order for it to be cleared.

 

[ADB100]

What is the reason for the error disabled state? It should be logged either is syslog or in the switches buffer (either of which need enabling...). By default all Error Disable causes are enabled. Once you know the source then investigate that. You can enable error disable recovery so that after a set time the port is re-enabled, but you should really fix the cause...

cat-2950#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
gbic-invalid Enabled
loopback Enabled
dhcp-rate-limit Enabled
unicast-flood Enabled
cat-2950#

cat-2950#show errdisable recovery
ErrDisable Reason Timer Status
----------------- --------------
udld Disabled
bpduguard Disabled
security-violatio Disabled
channel-misconfig Disabled
vmps Disabled
pagp-flap Disabled
dtp-flap Disabled
link-flap 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:


HTH

Andy