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why WS-C3560G-48TS-S gig port negotiating in 10 mbps ?

The WS-C3560G-48TS-S with gig interface and ios version c3560-ipservicesk9-mz.150-2.SE1.bin some ports  are negotiating in 10 mpbs. Laptop connected to  port also shows network adapter speed  as 10 mbps until switch port is manually configured with speed 1000 command?

Everyone's tags (1)

I´m thinking on these

I´m thinking on these possible causes:

- Noise in the link, so the switch and the laptop are not able to negotiate successfully.

- Negotiation disabled on at least one of the devices (possibly the laptop).

- Driver failure in the laptop, so it is not trying to negotiate at all (just guessing here).

You should try to discard some of these: connecting the same laptop to other port which you know is negotiating 1 Gbps; Connecting another end device which you know is able to negotiate 1 Gbps to the port  with the issue.

Also, if possible, test the link with a cable cualifier, or at least try to send a file through it to verify that the 1 Gbps (100 MB/s aprox) speed is in fact achieved, discarding noise issues.

Please let us know the results.

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