The Cisco switch encounters an error of err-disabled.

A Dell machine with a network card of M is connected to a Cisco switch. The error err-disabled occurs because of link-flap, that is, the network card is up and down too frequently in a short time. This error is not returned when a vswitch interface is changed. The cause is unknown.

Link-flap description:

Link-flap Error

Link flap means that the interface continually goes up and down. the interface is put into the errdisabled state if it flaps more than five times in 10 seconds. the common cause of link flap is a layer 1 issue such as a bad cable, duplex mismatch, or bad Gigabit Interface Converter (GBIC) card. look at the console messages or the messages that were sent to the syslog server that state the reason for the port shutdown.

% PM-4-ERR_DISABLE: Link-flap error detected on gi4/1, putting gi4/1 in err-Disable state

Issue this command in order to view the flap values:

Cat6knative #Show errdisable flap-Values! --- Refer to show errdisable flap-values for more information on the command.Errdisable reason flaps time (SEC) ----------------- ------ ---------- pagp-flap 3 30dtp-flap 3 30link-flap 5 10

 

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