08-15-2018 01:11 AM - edited 03-08-2019 03:54 PM
Hi,
I am having one Cisco 3850 switch and i want to know about SPAN.
monitor session 1 destinationinterface Te1/0/1
monitor session 1 source interfaceTe1/0/2
monitor session 1 source interface Te1/0/3
.
.
?
My question is , what is the max limit to put interface in source?
Also if i keep around 10 interface as a source then any impact on CPU utilization of the switch?
Solved! Go to Solution.
08-15-2018 02:47 AM
Hi
All is documented here :
No impact is generaly expected but if you redirect a lot of source interfaces to the same SPAN destination thant it will be a bottleneck and you will loose packets.
Regards
08-15-2018 04:26 AM
Hello
You can have multiple source span ports and mirroring can cause network disruption depending how much traffic you’re mirroring - I am not saying it will cause you disruption but the potential is there for it to do so.
I would suggest when you enable your span session that keep an eye on the cpu/memory utilization of the switch, if applicable take a pre/post baseline check.
08-15-2018 02:47 AM
Hi
All is documented here :
No impact is generaly expected but if you redirect a lot of source interfaces to the same SPAN destination thant it will be a bottleneck and you will loose packets.
Regards
08-15-2018 07:41 PM
Thanks Jerome,Paul
08-15-2018 04:26 AM
Hello
You can have multiple source span ports and mirroring can cause network disruption depending how much traffic you’re mirroring - I am not saying it will cause you disruption but the potential is there for it to do so.
I would suggest when you enable your span session that keep an eye on the cpu/memory utilization of the switch, if applicable take a pre/post baseline check.
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