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Storm Control Settings

Posted: Fri Oct 28, 2016 2:45 am
by keefe007
What are the recommended storm control settings in terms of PPS?

Re: Storm Control Settings

Posted: Fri Oct 28, 2016 8:01 am
by sirhc
That is an open ended question and based on your network.

For instance I have a completely routed network and never leave customers have layer 2 access to my network so I have it disabled.

If you have a small or large flat segment will make a difference to the values you use.

I would Google each type of traffic and learn what they all do and how much traffic of each type would be normal for your network based on your normal traffic levels then add maybe 50^ or even double the value.

But that would be me, everyone runs their networks differently and has a different topology so this is not easily answered as a one size fits all.

Re: Storm Control Settings

Posted: Fri Oct 28, 2016 10:53 am
by keefe007
Does storm control look inside VLANs?

Re: Storm Control Settings

Posted: Fri Oct 28, 2016 1:32 pm
by Eric Stern
Storm control is based on the number of packets on a physical interface and so is not affected by VLANs.

Re: Storm Control Settings

Posted: Sat Oct 29, 2016 7:57 am
by mhoppes
It is by port though - not total on switch correct?

Re: Storm Control Settings

Posted: Sat Oct 29, 2016 1:07 pm
by Eric Stern
Its actually total on the switch.

Re: Storm Control Settings

Posted: Sat Oct 29, 2016 1:10 pm
by mhoppes
So how long does it block for? Or just until that limit reduces?

Re: Storm Control Settings

Posted: Sat Oct 29, 2016 1:10 pm
by mhoppes
Is there a way on the switch to see the current number of unicast broadcast etc packets going through?

Re: Storm Control Settings

Posted: Sat Oct 29, 2016 1:52 pm
by sirhc
mhoppes wrote:So how long does it block for? Or just until that limit reduces?


It indiscriminately drops any packets over the specified storm limit.

Re: Storm Control Settings

Posted: Sat Oct 29, 2016 1:52 pm
by sirhc
mhoppes wrote:Is there a way on the switch to see the current number of unicast broadcast etc packets going through?


That would be a nice feature if Eric could do it.