How to find which Port has the highest traffic (both in/out) in switch

Hello,
I have a 3550 switch with 48 port having 12.1 code.
Need to know which port is causing the highest traffic , i mean to track which user is downloading/uploading the most.
I was able to track this in CATOS with the command sh top and that will tell the port, but in IOS based switches i was not able to find
Can some one help.

You can try with the following command:
show interfaces summary
Output shows the traffic for all ports instead of the top one only, but you can find the top from this output. Or you can install an MRTG or Cacti for monitor the used bandwith.
bye
FCS
Please rate me if I helped.

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How to find which Port has the highest traffic (both in/out) in switch

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