Internet Info 1994 March/Internet Info CD-ROM (Walnut Creek) (March 1994).iso/inet/ietf/92nov/vcrout-minutes-92nov.txt

Text File | 1993-02-17 | 7KB | 169 lines

Editor's Note: Minutes received 12/1/92

CURRENT_MEETING_REPORT_


Reported by Marco E. Sosa/Bellcore

Minutes of the Virtual Circuit Routing BOF (VCROUT)

The meeting was organized as a BOF to determine if there was enough
interest in forming an IETF working group to develop a standard routing
algorithm for choosing paths for virtual connection set-up in a Frame
Relay or ATM network.  The meeting was attended by more than 48 people.

The meeting was a presentation led by Rob Coltun covering the issues
discussed at a previous meeting.  Audience feedback/discussion on the
scope of issues addressed was encouraged and received.  (So much so that
we didn't even get through the summary of the previous meeting's
outcomes.)  The talk included:


   o Scope of the proposed working group.
   o Initial set of issues/plan of attack discussed at previous meeting.


In addition, Juha Heinanen presented his proposal for integrated routing
using NSAP addressing.

After much discussion the Group decided that there was enough interest
that a IETF working group should be formed.

A mailing list has already been set up at [e-mail].
Please use [e-mail] to join.

The following topics were addressed:


   o Rob and Marco Sosa (Bellcore) will co-Chair the Working Group and
     edit the resulting specification (standards-track RFC?).

   o Rob and Marco will co-author an (informational) Internet-Draft,
     before the next IETF, which will outline the envisioned scope and
     architecture for which the resulting specification will apply,
     including what we think are the major issues to resolve.  This will
     incorporate any input received from the mailing list.

   o The resulting specification should be based on existing standards/
     implementation agreements.  OSPF/RMP is one of the starting points
     for our proposal (RMP is an OSPF-based protocol used in
     multi-switch SMDS networks).

   o The work of this Group should not duplicate the work that is being
     done in other standard groups/forums.

   o The initial focus of the Group should be within a single routing

                                   1





     domain (Autonomous System) with up to 1000 switches.  Inter-domain
     routing issues will also be looked into, possibly based on IDRP.

   o We will specify the routing protocol used between switches in the
     routing domain.  A switch may in fact be distributed, running
     proprietary protocols internally.

   o What address resolution is performed by attached end-systems (and
     how), is a hot topic that can not be decided by this Group.
     However, it may be appropriate to specify a means of resolving the
     addresses received within a call set-up message into a network
     internal switch/ port identifier to be used by the routing
     protocol.

   o Q.933 (FR)/Q.93B (ATM) signaling will be base for virtual circuit
     management work.  The Group will look into extending these as
     needed to define an inter-switch call set-up protocol (algorithm
     and format) that will include an option for inter-domain and
     inter-domain (loose) source route call set-up.

   o Alternative methods for the format of the switch identifiers were
     discussed.  Using a private 32-bit address (which could be an IP
     address) to ID a switch or using variable-length public NSAPs to
     identify end stations attached to a switch and routing based on
     these were the two main options.

   o Assignment of link metrics was discussed.  There seemed to be
     agreement that metrics should be settable through administration.
     There is also a proposal to define default metrics to provide a
     consistent metric all switches could handle (as metrics may change
     dynamically).  The proposal is to look into using the SMDS RMP
     default metrics as the base.  Modifications are needed to base the
     metric on ``unreserved effective BW'' rather than capacity.
     Effective BW allows for over-reservation of links and leaves open
     possibility of a better traffic descriptor than peak rate or CIR.
     Also, ``damping'' procedures will be needed to make sure excessive
     LSAs are not sent (don't want new LSA every time a new connection
     is reserved over a link).

   o Three different classes of service were discussed, VC, Datagram,
     and ``Soft VC'' (like VC but without strict QOS guarantees,
     possibly allowing simpler call rerouting).


The co-Chairs will create a draft Charter based on the agreements of the
two meetings.

Attendees

Cynthia Bagwell          [e-mail]
Fred Baker               [e-mail]
Ken Benstead             [e-mail]

                                   2





Lou Berger               [e-mail]
Shiraz Bhanji            [e-mail]
Edo Biagioni             [e-mail]
Ken Carlberg             [e-mail]
Kay Chang                [e-mail]
Dilip Chatwani           [e-mail]
Dean Cheng               [e-mail]
Chi Chong                [e-mail]
George Clapp             [e-mail]
Robert Cole              [e-mail]
Osmund de Souza          [e-mail]
Art Dertke               [e-mail]
Jacques Dugast           [e-mail]
Robert Enger             [e-mail]
Mike Goguen              [e-mail]
Patrick Hanel            [e-mail]
Ken Hayward              [e-mail]
Frank Heath              [e-mail]
David Husak              [e-mail]
David Jacobson           [e-mail]
Merike Kaeo              [e-mail]
George Kajos             [e-mail]
Fong-Ching Liaw          [e-mail]
Olli-Pekka Lintula       [e-mail]
Robin Littlefield        [e-mail]
Andrew Malis             [e-mail]
Tracy Mallory            [e-mail]
Robert Moose             [e-mail]
Julianne Myers           [e-mail]
Erik Nordmark            [e-mail]
Bala Rajagopalan         [e-mail]
Jim Scott                [e-mail]
Frank Solensky           [e-mail]
Marco Sosa               [e-mail]
Brad Steinka             [e-mail]
Terrance Sullivan        [e-mail]
John Tavs                [e-mail]
Dono van-Mierop          [e-mail]
James Watt               [e-mail]
Luanne Waul              [e-mail]
Guy Wells                [e-mail]
Ian Wilson               [e-mail]
Liang Wu                 [e-mail]



                                   3