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Catalyst 3750G 12S - Amber SFP Port

james.procopio
Level 1
Level 1

Running - IOS - flash:c3750-advipservicesk9-mz.122-46.SE.bin

I have a amber light that comes on about every 1 to 3 mintutes and it flashes about 10 times and then goes back to green.   This port is connected to a Riverbed device via LAN0.0.  Both sides are hard coded for 100/Full and there are no errors in the log.  There are however CRC's generating as well as imput errors.  I shut the RB device in order to bypass our optimization and take any potential RB misconfigurations out of the mix and I still have the flashing amber.   We are not losing WAN connectivity however I know this should not be happening.  HELP PLEASE !!

2 Replies 2

Reza Sharifi
Hall of Fame
Hall of Fame

Have you replaced the cable between the 2 devices?

Leo Laohoo
Hall of Fame
Hall of Fame
Both sides are hard coded for 100/Full and there are no errors in the log.  There are however CRC's generating as well as imput errors.

It's duplex mismatch error.  Post the command "sh controller ethernet ".

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