everything is working ok, but i don't know what does this mean?
sh int gi 0/1 .... Full-duplex mode, link type is force-up, unknown 0 output flow-control is unsupported, input flow-control is unsupported, 1000Mb/s ....
I would guess that the switch/router is not recognizing the GBIC for this interface. Try replacing it with a known working GBIC.
but it's not gbic. it catalyst 2950T switch with 2 gigabit interfaces. and it's working.
You may wish to investigate the Cisco Error Decoder:
Brad Reese BradReese.Com Cisco Repair Service Experts
Please post sh version, sh run int gi 0/1 and full output for sh int gi
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