johansens Tue, 12/27/2005 - 02:32
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It would help if you could say something about which platform and IOS or CatOS, but anyways, see these links:


"Troubleshooting STP on Catalyst Switches Running Cisco IOS System Software"

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a0080136673.shtml


"Spanning Tree Protocol Problems and Related Design Considerations"

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_tech_note09186a00800951ac.shtml


"Troubleshooting LAN Switching Environments"

http://www.cisco.com/en/US/tech/tk389/tk213/technologies_tech_note09186a0080176720.shtml


"Spanning Tree Protocol - Troubleshooting TechNotes"

http://www.cisco.com/en/US/tech/tk389/tk621/tsd_technology_support_troubleshooting_technotes_list.html


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