Home > Cisco, Switch > Errdisable Port state on Cisco switch

Errdisable Port state on Cisco switch


Errdisable is usually caused by:

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.

To show err-disabled interfaces:

switch# show interfaces status err-disabled

To recover the err-disabled interfaces, just have to shutdown the and no shutdown the interfaces.

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  1. March 4, 2010 at 3:05 pm

    What would be the effect of Errdisable on computer systems.

    • March 6, 2010 at 12:35 pm

      errdisable on a port of cisco switch, basically the port will be turn off.

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