Re: IGMP Snooping on 2950 and still flooding multicast
What you probably see are multicasts in the range 0100.5e00.00xx. The Cisco switches do not apply IGMP snooping on these addresses. Why?
224.0.0.x is dedicated to link-local multicasting (by IANA). These addresses map to the MAC addresses mentioned above. Quite a few applications use these addresses (just think of the routing protocols).
If you restriced forwarding to those who registered through IGMP (and therefore create a multicast CAM entry), these applications wouldn't work no longer.
Keep that in mind, when you choose multicast groups for your multicast applications.
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.