01-17-2012 06:09 AM - edited 03-07-2019 04:23 AM
We have a Cisco 3750G-POE 24 port switch. A user's port status went into err-disabled status. The switch is not configured for port-security. What are some reasons why a port would go err-disabled?
Thx in advance for any help provided.
Solved! Go to Solution.
01-17-2012 06:55 AM
Duplex mismatch
Port channel misconfiguration
BPDU guard violation
UniDirectional Link Detection (UDLD) condition
Late-collision detection
Link-flap detection
Security violation
Port Aggregation Protocol (PAgP) flap
Layer 2 Tunneling Protocol (L2TP) guard
DHCP snooping rate-limit
Incorrect GBIC / Small Form-Factor Pluggable (SFP) module or cable
Address Resolution Protocol (ARP) inspection
Inline power
See link:
http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b.shtml#topic3
01-17-2012 06:55 AM
Duplex mismatch
Port channel misconfiguration
BPDU guard violation
UniDirectional Link Detection (UDLD) condition
Late-collision detection
Link-flap detection
Security violation
Port Aggregation Protocol (PAgP) flap
Layer 2 Tunneling Protocol (L2TP) guard
DHCP snooping rate-limit
Incorrect GBIC / Small Form-Factor Pluggable (SFP) module or cable
Address Resolution Protocol (ARP) inspection
Inline power
See link:
http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00806cd87b.shtml#topic3
01-17-2012 07:10 AM
Thx for your quick response. Have a good day.
01-17-2012 09:32 AM
Usually it will tell you in the log why it was err-disabled.
01-17-2012 08:28 PM
Thanks Ton, for replying quickly and helping Mark in time.
Regards,
Pulkit
Techincal Community Manager
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide