Subject: Minutes of Nov. 2, 1995 HPR SIG meeting at AIW 9

From: "Marcia Peters (8-444-4380)" <[email-masked]>
Date: Wed, 8 Nov 95 18:02:09 EST

Minutes of HPR SIG Meeting
                        Nov. 2, 1995
                 9th APPN Implementers' Workshop
                    Raleigh, North Carolina
_______________________________________________________________________

After 3 hours of discussion, mainly concerning additional requirements,
the ATM-02 document submitted by IBM reached Approved Direction without
changes.

During the meeting we reaffirmed our updated charter to develop the
HPR/ATM architecture and maintain the HPR standard.  The editor, Gary
Dudley (IBM), reviewed updates in the ATM-02 draft and answered
questions.  Following a short presentation by Andre Fredette (IBM) on
the recent activities of the ATM Forum's Multi-Protocol Over ATM (MPOA)
working group, we decided to establish a liaison between the AIW and the
ATM-F by stating our desire to do so in a contribution for the December
1995 ATM-F meeting; HPR SIG members will review the contribution before
it goes out.  Further research is needed to decide whether HPR/ATM
should support UNI 3.0 in addition to 3.1; the issue is whether ATM
switches map between 3.0 and 3.1.  Most members agreed that such support
is desirable.  On the topic of native ISR/ATM, many comments were
opposed to it and the request to add it to the HPR/ATM spec was
withdrawn.  However, we did conclude that that nothing prohibits it; no
work on it will be done at the HPR SIG; such products will not use any
of the new HPR/ATM architecture such as new COS tables or ATM connection
network; they have a choice of sending their XID twice or imposing
additional configuration on customers.  (I should also point out that
they will not interoperate with ISR products using ATM LAN Emulation, an
interim method the SIG agreed to at AIW 7.)  We devoted a lot of time to
the question of how to reduce the number of VCCs in a configuration
where two ATM campuses interconnect over an ATM VRN through non-HPR
campus gateway boxes; Jim Cobban (Nortel) will write a description of
the requiprements.  A proposal was made that the HPR SIG look at how to
implement a single TG over multiple SVCs; Matthew Finlayson (DCL) will
write up the requirements.

We determined that most AIW members are also members of the ATM Forum,
and could attempt to influence the ATM-F in ways that are beneficial to
HPR/ATM. The SIG recommends that the ATM-F:
(1) include Bandwidth Modification in the UNI as soon possible and
(2) make support for multiple Broadband Lower Layer Information Elements
    standard, rather than optional, in UNI signalling.
I encourage you to make your company's ATM-F reps aware of these
requests.

Those who attended the meeting are invited to post any additions or
corrections here.

     Marcia

_________________________________________________________________________
 Marcia L. Peters, Senior Architect         Marcia_Peters @ vnet.ibm.com
 Advanced Peer-to-Peer Networking
 IBM Corp., Dept. BUFA, Bldg. 664
 P.O. Box 12195                             Phone:         (919) 254-4380
 Research Triangle Park, NC 27709           Fax:           (919) 254-5483