The IP over ATM Mailing List Archive by date

[Keith McCloghrie <kzm@cisco.com>]

Andy,

I agree that option 4 is the best of the bunch.  To extend your
reasoning, it seems to me that MARS is a new protocol - so, using a new
PID value, rather than a new OUI value, is more appropriate, as well as
"cheaper", to indicate the use of MARS.

Keith.
 
> Bryan,
> 
> (omissions are for brevity)
> > A new version of the encapsulation Internet-Draft has been
> > submitted. It is <draft-armitage-ipatm-encaps-01.txt> ...
> > I no longer believe that the new SSCS option is the best 
> > solution to the problem, although it is included as option 5. ...
> > So I think the best options are 3 and 4 (you'll need to read the
> > draft). One differentiates based on OUI, the other on PID.
> 
> I read through the draft and thought a bit about the implications of
> each.  I completely agree that while you included options 1, 2, and 5
> for completeness' sake, they are not suitable solutions.  Between
> options 3 and 4, as you mentioned, it's a harder choice.  One of the
> implications of option 3 is that the entire PID space for the new OUI
> is basically used up by completely replicating the PID space for OUI
> 00-00-00, while option 4 only requires one new PID to be allocated.
> 
> FYI, I checked with the IANA to see if there were any current uses of
> the IANA's OUI in SNAP headers, and they said:
> 
>    The answer is "no", we are not aware of any uses of the IANA's OUI
>    (00-00-5E) as the OUI in SNAP headers, and the assigment of PIDs to
>    go along with the OUI.
> 
> So while the space is available, I would hate to ask them to allocate
> it all in one fell swoop!  So, I've come to the conclusion that option
> 4 is best, and we should ask the IANA to allocate us one PID in its
> OUI space for this use.
> 
> Regards,
> Andy Malis
> __________________________________________________________________________
> Andrew G. Malis   malis@maelstrom.timeplex.com             +1 508 266-4522
> Ascom Nexion      289 Great Rd., Acton MA 01720 USA   FAX: +1 508 266-2300
>