Experiences with Comcast Ethernet/Transit service

Antonio Querubin tony at lava.net
Mon Jan 4 14:13:00 CST 2010


On Mon, 4 Jan 2010, Holmes,David A wrote:

> I do not know of Comcast's Ethernet services specifically, but a general 
> problem with carrier Ethernet services that are based upon the Metro 
> Ethernet Forum (MEF) is that PIM-snooping is not implemented for 
> multicast traffic. The absence of PIM-snooping results in the carrier's 
> Ethernet service operating like a 1990's style Ethernet hub in which 
> (S,G) multicast packets are incorrectly flooded out all user ports.

Not implemented because it's not in the MEF specs or not implemented 
because of carrier operational practice?

Antonio Querubin
808-545-5282 x3003
e-mail/xmpp:  tony at lava.net




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