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pppext-minutes-94jul.txt
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CURRENT_MEETING_REPORT_
Reported by Fred Baker/Advanced Computer Communications
Minutes of the Point-to-Point Protocol Extensions Working Group (PPPEXT)
PPPEXT Editor
The PPPEXT Working Group has a new editor. Bill Simpson resigned as
editor as of this IETF. The chair notes that Bill's technical
contributions have been many and helpful in making PPP and its
extensions clearly understood and interoperably implementable by many
disparate organizations. We wish him well in his new endeavors.
The new editor is Scott Wasson. The role of the editor is that of
``designated reviewer,'' responsible for readability, clarity of
explanation, and consistency of language and technical approach among
documents produced by this working group. Scott will work out with each
author how they will interact, whether by Scott submitting comments or
whether he edits the author's text.
IESG In Basket
Currently in the IESG's in basket are the following documents:
o To Proposed Standard:
- draft-ietf-pppext-dataencap-02.txt
- draft-ietf-pppext-frame-relay-03.txt
- draft-ietf-pppext-multilink-09.txt
o To Draft Standard:
- OSI CP (RFC 1377)
- DECNET CP (RFC 1376)
Status Report on the Compression Control Protocol and Associated
Documents
Compression is a major issue for ISOC at the moment. Motorola sent a
letter to ISOC indicating that the CCP may infringe on one or more of
its patents. Since ISOC (like ANSI and other organizations) requires
that standards produced by our community be either patent-free or that
the patent holder assure ISOC that it will negotiate reasonable terms
with those who implement, the drafts cannot be approved for any status -
including Informational RFC - at this point. ISOC is seeking to
communicate with Motorola, but has to date not secured the necessary
assurances. The patent numbers are 5,130,993, transmitting encoded data
on unreliable networks, and 5,245,614, vocabulary memory allocation for
adaptive data compression of frame-multiplexed traffic. This affects
the following drafts:
o draft-ietf-pppext-compression-04.txt
o draft-ietf-pppext-bsd-compress-01.txt
o draft-ietf-pppext-gandalf-00.txt
o draft-ietf-pppext-hpppc-00.txt
o draft-ietf-pppext-magnalink-01.txt
o draft-ietf-pppext-predictor-00.txt
o draft-ietf-pppext-stacker-01.txt
NETBIOS CP
Those who were working with the NETBIOS CP indicate that the current
draft (draft-ietf-pppext-netbios-fcp-05.txt) meets their needs and
should be published as a Proposed Standard.
Synchronous Data Compression Consortium
Stuart Venters made a presentation regarding the activities and
conclusions of the SDCC, a consortium of DSU/CSU vendors who would like
to use a variation on the PPP Compression Control Protocol to
interconnect compressing DSUs. This is an unusual application: HDLC
data (potentially PPP but potentially also X.25, Frame Relay, or other
HDLC protocols) is encapsulated in PPP datagrams containing compressed
data. There can be interesting circumstances wherein a device calls a
system using a compressing DSU, and the DSU seeks to open a PPP session
before passing data on to the target system. These would, of course, be
temporary occurrences. Even if the LCP came up and was authenticated,
the DSU would recognize the situation when the SDCC's NCP for the case
failed negotiation.
The SDCC would like to modify the LCP for use in this circumstance, to
reduce the negotiation to a single message exchange. This was
discussed, and SDCC agreed to further consider the viability of this.
Primarily, the SDCC wished to know whether the PPP community felt that
they should pursue public adoption of the standard. Our belief is that
we have considerable expertise to offer the SDCC in designing the
application, and a vested interest in their getting it right (our
implementations will at least occasionally chat with theirs).
Therefore, we recommend that the SDCC use the IETF as a forum for this
development.
AppleTalk CP
Brad Parker spoke about the text changes he has published in a revision
of the AppleTalk NCP; he is updating RFC 1378 for advancement to Draft
Standard. AppleTalk has been a problem in PPP interoperability, due to
incomplete or incorrect implementations. The draft seeks primarily to
clarify wording to remedy this situation. This work will continue on
the list.
Callback Procedure
Gurdeep Singh Pall, speaking for Narendra Gidwani, described a proposed
callback procedure to be used in authentication. The idea is that there
may be several numbers that the authenticator can call the authenticatee
at, among which the authenticatee might select. There is also often a
delay before which there is no point in calling: the modem has not
turned around. The procedure allows for the authenticatee to offer a
set of call addresses and a minimum delay before calling. This will be
pursued as a modification of the LCP callback option.
Internet Protocol CP
Gurdeep went on to describe some concerns that Microsoft has with the
IPCP. Microsoft would like additional options to describe primary and
secondary DNS and NETBIOS name server addresses, time server addresses
and for registering IP multicast usage. The Routing and Internet Area
Directors, being all present, and the working group consensus indicated
that protocols (DHCP and IGMP) exist for this purpose, placing these
options out of scope.
Gurdeep has agreed to update the IPCP with implementation notes in
preparation for advancement to Draft Standard. There was consensus to
add a boolean option to IPCP to request forwarding of network and subnet
broadcasts. Alan Steele is planning a related effort to update the Van
Jacobsen compression algorithm described in RFC 1144.
Authentication
David Carrel reported on the status of the sub-group working on
authentication. The status is essentially that some agreements have
been hammered out, but are not at this point documented. David will
post an Internet-Draft concerning authentication requirements by
1 September.
Banyan Vines CP
Fred Baker presented Steve Senum's BVCP draft in a few overheads, and
led a review. Some typos were pointed out (which will be pointed out in
mail on the list) and a proposed BV-Routing option was discussed. Steve
will continue development of the draft on the list.