Port Monitor command not available on Catalyst 2950 with IOS 12.1 (9) EA1?

I am trying to span some ports on our dmz switch which is a catalyst 2950. When I try to run the "port monitor" command I get the invalid input detected return. Does anyone know if IOS 12.1 EA1 has support for span ports? If not which IOS can I update this to to support span port?

rrose987Asked:
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OferCOFCommented:
As far as I know this works on IOS Versions 12.0 or 12.2 and there is a know issue on 12.1
Try this document:
http://www.cisco.com/warp/public/473/41.html
Hope this works for you.
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rrose987Author Commented:
Thanks. I am still unable to issue the "port monitor" command, however, I found some more documentation that suggests using the "monitor session" command. The only problem is once I issue this command I loose connectivity and I then have to reload the switch. Pretty strange, wish I knew what the problem is!
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