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Webcast-Catalyst9k
New Member

%SYS3-PORT_COLLDIS 4/37 disabled due to collision

The port was connected to a media converter. When the duplex and speed were configured manually - the problem has stopped.

Does anyone know why and how this message is generated?

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Anonymous
N/A

Re: %SYS3-PORT_COLLDIS 4/37 disabled due to collision

Some LAN devices and NICs does not work well when connected to a LAN switch port configured to auto discover speed and negotiate duplex mode. This is very common.

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