Subject: RE: [magma] Doubt regarding Snooping and Proxy function of a swit ch.

From: "KIMBALL,KAREN (HP-Roseville,ex1)" <[email-masked]>
Date: Tue, 3 Feb 2004 11:39:10 -0800

Hi, Everyone,
 
> Hello All,
> 
> I was reading the drafts -- draft-ietf-magma-snoop-10.txt and
> draft-ietf-magma-igmp-proxy-04.txt and i need following 
> clarifications -
> 
> 1.IGMP snooping switch which doesn't perform proxy function --
> 
> Do we need to forward the IGMP queries received on router 
> ports to other ports??? 

YES. Specifically, to ports which have 1) routers or 2) have been
configured by the user to forward IGMP protocol and data pkts.
This is covered in the draft.

> If yes,
> a)Do we need to modify the source IP address to 0.0.0.0 ?

NO. The snooping switch does not alter the protocol packets
it snoops. This, also, is covered in the draft.

> 2.IGMP snooping switch which performs proxy-reporting also --
> 
> For performing proxy function, according to draft 
> proxy-04.txt, we must have
> only one upstream interface and it works only in tree topology.
> a) Does this imply, we cannot implement proxy function in a 
> IGMP snooping switch when there are more than one router 
> ports? But the draft snoop-10.txt section 2.1.1  statement 2), 
> states that IGMP snooping switches may also implement 
> proxy function.

This is a question for the Proxy Draft author. Haixiang?

Thanks,
	Karen Kimball

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