What causes a port to be placed in the err-disabled state?

The correct answer is B. link flapping. The Errdisable error disable feature was designed to inform the administrator when there is a port problem or error. The reasons a catalyst switch can go into Errdisable mode and shutdown a port are many and include: Link Flapping (up/down) Port Security Violation Unicast Floddin

Submitted by luis.pe· Mar 5, 2026Network Access

Question

What causes a port to be placed in the err-disabled state?

Options

Anothing plugged into the port
Blink flapping
Cshutdown command issued on the port
Dlatency

How the community answered

(48 responses)

A
4% (2)
B
88% (42)
C
6% (3)
D
2% (1)

Explanation

The Errdisable error disable feature was designed to inform the administrator when there is a port problem or error. The reasons a catalyst switch can go into Errdisable mode and shutdown a port are many and include: Link Flapping (up/down) Port Security Violation Unicast Flodding Broadcast Storms

Topics

#Err-disabled state#Switch port errors#Link flapping#Cisco switching

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