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December 2nd, 2009 02:00

2 PowerConnect 5424 switches CPU @ 100% permanently

Hi,

I have 2 PowerConnect 5424's connected to each other, one has 2 fibre links to our ISP and the other has our firewalls connected to it.  Both of these switches recently started running with a CPU utilization of 100% and only go down briefly after downing/upping their link to each other.  I have tried enabling flow-control and back-pressure with no change.  I have also looked at the RMON stats and there's nothing to indicate a problem.  They are both running firmware:

SW version    1.0.2.7 ( date  17-Jun-2008 time  20:04:29 )

Boot version    1.0.0.6 ( date  09-Oct-2007 time  14:09:52 )

HW version    00.00.02

We are considering upgrading to the latest firmware but I was hoping someone may have other troubleshooting steps so we could at least see where the problem lies (e.g. DoS using masses of connections/packets?).
Thanks for any help!

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