Some documents mention certain access switches have L3-aware ASIC's that can snoop the IGMP packets w/o crushing the switch CPU.
Does anyone know where I can find a matrix table that shows which switch models support this feature?
For example, a few of our remote locations still have 3550's...can we run IGMP snooping on those w/o causing the CPU to spike?
You are right in what you say in that if the switch does not support IGMP snooping in hardware then it can have a significant impact on the switch CPU. Some of the older switches did not have hardware but all the later Cisco switches should have hardware support.
The 3550 does support IGMP snooping in hardware so that shouldn't be an issue for you.
If you want to find out for all your L3 switch types you need to look at the datasheets but the 3560/3750 both have hardware support as well.
Were there any specific L3 switches you were thinking of other than the 3550 ?
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.