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SPAN session CPU usage

Hi,

A while ago we tried doing logging on some ACLs on a 3750X running version 15.02SE. After some time the CPU spiked and caused a memory leak which forced the switch to reboot. I did some reading and found that the CPU usage does spike when logging on ACLs, there are ways to rate limit the logging but that doesn't give full visibility into what is going through the switch.

I'm guessing the alternative is running a monitoring session.

My question about the SPAN session is, will it greatly impact the CPU of the switch the same way ACL logging did? And if so, will monitoring 10 Vlans in both directions and sending them to a single destination cause the same type of crash as we experienced with ACL logging?

If we can do the monitoring sessions, it would be a good workaround seeing as the logging interval will give us limited visibility.

Cheers,

Waqas

 

 

 

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