Can anyone give me a logical explanation of what may have caused the following situation. As background, we are running two core 6509's in our company which redundantly feed our closets who have a mixture of 6509, 5500, 2900, 1900's with FDDI Gigabit uplinks. We were guessing something to do with spanning tree but with the TAC's help at least narrowed it down to the GBIC module on one of the closet 5509's. First all of our C1900's locked, bringing down much of our bldg. Using the "show mac" command on the switch showed that one GBIC module on the 5509 was broadcasting 100's of thousands of msgs per second! With help from the tac in finding this we shutdown this particular GBIC module and low and behold the entire network stabilized and came back to normal. We have not come up with a reasonable explanation for this and are afraid to enable the module again, but without it we have lost our redundancy to this particular closet. Has anyone come across this? Would appreciate any insight while studying for the 640-504 test next week. Bob Sites System Engineer, CCNA ___________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
