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Re: What's the good word?

Steve Deering <deering@parc.xerox.com> Sun, 17 May 1992 05:27 UTC

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To: ietf-rip@parc.xerox.com
Subject: Re: What's the good word?
Date: Sat, 16 May 1992 22:31:36 PDT
From: Steve Deering <deering@parc.xerox.com>
Message-Id: <92May16.223142pdt.3146@skylark.parc.xerox.com>

>     On IP multicasting - you imply that this simply requires the
>     translation between IP and hardware addresses for appropriate media,
>     which sounds good to me.  (the only document I have on IP multicasting
>     is RFC 1112, which says that if you want to send as well as receive
>     multicast, then you MUST do IGMP)

Anil,

IGMP is needed only to support multicasting across more than one subnet,
which is not necessary for RIP-2's use of multicast.  The Host Requirements
RFC and the draft Router Requirements RFC have overridden the requirements
stated in RFC 1112 and have specified that IGMP is OPTIONAL (whereas the
rest of RFC 1112 is RECOMMENDED).

Steve

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