Wednesday, September 18, 2019

Question on storm control Cisco switches

At my job, we are having issues with booting up and running about 170 pcs at once for an event we are hosting. These are not all on one switch, but split up between 8 access switches, so 20-25 a switch, all connected back to a core switch. These pcs are receiving images from a Citrix server. It's your typical battle where sysadmins are blaming the network admins and vise versa.

We are investigating the network portion and looking at our access level switches. We do not actually manage these switches (different network managed by different team) but we do have access. Upon investigating, we noticed that storm control is set on each interface with upper and lower thresholds set at 5%.

5% seems extremely low in my opinion. Does anyone else think this could be causing an issue with boot times. Not only boot times, but once the pcs do boot and we are logged in, a lot of them are just freezing up and giving no interaction. I would think at this point, the broadcast storm would be done, but am I wrong?



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