MaveriK Posted July 21, 2009 Share Posted July 21, 2009 Got a strange one that i wonder if anyone has come across before. My core switches are 4506's connected via single and multimode fibre with dual routes, like two circles. Each 4506 has a spoke fibre network out into the factory/offices to user switches which range from 2950 up to 3560. All of a sudden when i plug a printer server or some low end protocol stacked device into the switch i can only guarantee a ping responce for 600 seconds (mac address flush time) then it dies and i have to switch the device off and on before it works again. 600s is the minimum time but it could last for hours, days etc. This only happens on the spoke switches, if i plug the device into a core all is ok. I run trunking to each switch and have tested this is working and even tried all the modes auto, on, desire etc. I have also tried static mac-addressing, i could up the aging time but eventually its going to hit me There are no errors on ANY port. Nothing has changed. I am upgrading the IOS of the core switches this weekend and that of our default gateway. Ideas, thoughts? Quote Link to comment Share on other sites More sharing options...
JustGav Posted July 21, 2009 Share Posted July 21, 2009 Are you running VLANS? Check to see if there is some issue with vlan numbers/amount between the various switches. I have had it in the past where a 26xx switch bombed badly because there is a vlan issue. Quote Link to comment Share on other sites More sharing options...
MaveriK Posted July 21, 2009 Author Share Posted July 21, 2009 Hi Gav, Wondered how long it would take you amigo. Running 2 vlans, one for voice and one for wireless. Went all over that last week, checked all were running version 2 and that all but the core switches are running in client mode. The mac-addressing is across vlan1, have checked bandwidth on interswitch ports and there is plenty available Quote Link to comment Share on other sites More sharing options...
caseys Posted July 21, 2009 Share Posted July 21, 2009 I take it the device is in vlan 1 only and not in vlan99 is it? Only really used Cisco MDS fibre kit myself. Does sound like you have a conflict somewhere but if it doesn't have a WWN I'm not too hot. Buy brocade Quote Link to comment Share on other sites More sharing options...
kill1308 Posted July 21, 2009 Share Posted July 21, 2009 Have you assigned roles to any of the ports on any of the switches that are having trouble ? Quote Link to comment Share on other sites More sharing options...
MaveriK Posted July 21, 2009 Author Share Posted July 21, 2009 All the kit i am having trouble with is in vlan1. Ports are configured stock apart from speed/duplex hard coded and spanning-tree portfast Quote Link to comment Share on other sites More sharing options...
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