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New Member

3550 smi and xls randomly slowing network down

Please help i have over 50 3350 xl's and smi Cisco switches, which at random time on different floor in a 20 story building slows network down. The switches are not struggling traffic or reporting errors. I have logged many calls with cisco and together we configed udld loopguard spanning treeport fast and upgrade all devices to the latest ios. but after doing tests by transferring 1 gig data from client building to hosting facilty some switches take 50% more time to tranferrer the data. The swtiches are gig stacked in pairs of 3 which connect to 2 4000 switches via fibre. Any ideas what else this could be. ? I have noticed that the gig stacks to each other are mauanlly set to half duplex. is this normal or should i false to full duplex ?

3 REPLIES
Silver

Re: 3550 smi and xls randomly slowing network down

It shows Spanning-tree Protocol failures in some Catalyst 3550 models

Try bug CSCdy21905

New Member

Re: 3550 smi and xls randomly slowing network down

Thanks i shall update the ios and see how it goes

New Member

Re: 3550 smi and xls randomly slowing network down

I have upgraded all Cisco switches to the latest IOS i shall montior to see how it goes.

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