Fred, There used to be the Sub IP area in the IETF, see http://www.ietf.org/IESG/STATEMENTS/sub_area.txt
Is something like this what you are talking about, or are you talking something more about the l2-l3 interface on end points? I think there is some baggage with the term Sub-IP, so I wouldn't recommend using this term. John >-----Original Message----- >From: ext Templin, Fred L [mailto:[EMAIL PROTECTED] >Sent: 22 March, 2007 14:24 >To: [EMAIL PROTECTED] >Cc: [EMAIL PROTECTED] >Subject: [Int-area] the layer below IP > >I made a rather strong statement with an individual during a >meeting this week that really should more appropriately have >been vetted with the rest of the community instead - so, here I am. > >In the classic model, we have traditionally considered the >layer immediately below IP (L3) as the link layer (L2). But, >in some common scenarios there is actually quite a lot that >goes on below IP but above the datalink. Some have called this >"L2.5", but I find that term to be misleading because it seems >to imply that there is one and only one functional layer >between L3 and L2 and that does not accurately capture all scenarios. > >I wrote a draft that tried to address this by re-introducing >the legacy OSI terminology which specified a 3 sublayer >decomposition of L3 (the internet sublayer (L3c), the subnet >enhancement sublayer >(L3b) and the subnet access sublayer (L3a)). But, even this >more specific terminology suffers from hazy distinctions >between what belongs in one of the sublayers as opposed to another. > >So, can we simply call it the "sub-IP layer" as opposed to the >other alternatives? "Sub-IP" makes no statement about any >layering structure that may occur immediately below IP, and as >such it allows for any level of mechanisms that may need to be >implemented below IP down to and including the (classical) >link layer. The term can also be used even if there is no >intermediate mechanism at all, since L2 is by definition a >"sub-IP" layer. > >In summary, I belive there is no one precise way to call the >mechanisms that might occur immediatley below IP so can we >just collectively call them: > > The "sub-IP layer" > >Thanks - Fred >[EMAIL PROTECTED] > >_______________________________________________ >Int-area mailing list >[email protected] >https://www1.ietf.org/mailman/listinfo/int-area > _______________________________________________ Int-area mailing list [email protected] https://www1.ietf.org/mailman/listinfo/int-area
