Editor's note:  These minutes have not been edited.



Area report for the IETF Routing Area
June 1996 IETF meeting

InterDomain Routing (IDR) -
Sue Hares and Yakov Rekhter chairs
Status of Documents since last IETF:
       - Confederations (forwarded to Experimental)    - Communities
(forwarded to Proposed Standard)                [draft-ietf-idr-
community-00.txt]
       - Usage of Communities (forward to Informational RFC)
(title: An Application of the BGP Community Attribute
in Multi-home Routing)
               [draft-ietf-idr-community-usage.txt]
       - Route Reflection (forwarded to Experimental)
       [draft-ietf-idr-route-reflect-00.txt]           - IDRP for IP v4
and v6 - Draft publish by Paul          comments made on draft.
Configuring
               IDRP Confederations will be folded into this
               document. Discussion will continue on the mailing list.
       - How new BGP Attribute Types are defined",              B.
Manning, 04/12/1996. (3209 bytes)
               Will be released as a IDRP draft and
               final call will be made on the mailing list.
       Documents not discussed:
        MIB - still awaiting usage reports
New items:
       MED Calculation in BGP (Rich Woundy)
        Discussion on the mailing list will occur.      Initial
informaition gathering into a document   by Susan Hares.
       BGP Route Calculation Support for RSVP
        This document was presented by Bill since it    was not
available. Suggestions to author were    explain why, and what in full
detail.
Open Issues from last Meeting:
       1) BGP MIB - operational reports
       2) Working Group needs to discuss Route-Reflection and   Route
Server Specification and chose one of the        specification


IP Routing for Wireless/Mobile Hosts (mobileip)
Jim Solomon and Erik Nordmark chairs
The mobileip working group met twice in Montreal. The first meeting
discussed the latest IPv6 draft. After much debate it was decided that
Mobile IPv6 requires no changes to the base IPv6 protocol documents.
However, it was agreed that all IPv6 nodes SHOULD implement a
binding cache and that all IPv6 routers SHOULD be home agents. The
required mobility support in routers was discussed but no resolution was
reached; hopefully this will be resolved on the mailing list.
The second meeting focussed on IPv4 mobility and centered around
security and firewall traversal issues. Authenticated firewall
traversal has become one of the key required components needed for
ubiquitous Internet-wide mobility and the WG is likely to focus on
these security issues in addition to the IPv6 work. Regarding the
Internet Key Management protocol being developed by the ipsec
working group, it was noted that the ability to separate the source IP
address in a packet (e.g. care-of address) from the "identity" of an
entity (e.g. home address) is helpful (if not mandatory) to facilitate
firewall traversal by mobile nodes.


Open Shortest Path First IGP (ospf)
John Moy chair
The OSPF WG met for a single session on Wednesday, June 26 1930-2200
in Montreal. We started with a review of the current state of the OSPF
for IPv4 and IPv6 drafts. Ran Atkinson then gave a presentation of the
use of IPv4-compatible addresses within IPv6. Sandra Murphy
presented the changes made in "Digital Signatures for OSPF" since her
last draft, along with implementation experience. The session ended
with two QoS routing presentations, the first an overview of QoS
requirements from Raj Nair and Bala Rajagopalan, and then a
description of QOSPF by Eric Crawley


New Internet Routing and Addressing Architecture (nimrod)
Noel Chiappa, Isidro Castineyra and David Bridgham chairs Steve
Kent presented work on securing Nimrod against denial of service
attacks. The group discussed the work, but no actions were taken.

While route generation is outside of the core Nimrod design, it is
obviously a necessary piece to actually using Nimrod. Ram
Ramanathan talked about the route generation algorithm in BBN's
experimental Nimrod implementation.

Martha Steenstrup gave a presentation of how some of the ideas of
Nimrod are finding application in mobile wireless work they're doing.

Martha also talked about lessons learned while implementing Nimrod
and Ram continued with particular lessons learned about Nimrod's
maps. Even with small, experimental maps it became obvious that a lot
more work needs to be done here to make Nimrod's maps usable by the
general networking community. Also, map information interacts closely
with route generation algorithms so the two may not be as separable in
practice as they are in the architecture.

At the end there was a short discussion on the future of Nimrod as the
BBN Nimrod project is over and the experimental code will be
released.


Inter-Domain Multicast Routing (IDMR)
Anthony Ballardie and Bill Fenner chairs The PIM and CBT protocol
specifications are undergoing final revisions before being submitted for
Experimental standard status. In addition, five IDMR MIBs have been
put forward for Experimental, but first must be reviewed by a member of
the Network Management area. The group was solicited for any final
comments on the specs and/or MIBs. The following presentations were
given:
       - an overview of a hierarchical multicast architecture, and
accompanying transition strategy for evolving the MBONE         - PIM
updates, including PIM border router behaviour for PIM clouds    to
interoperate with dense mode protocols.         - DVMRPv3 update
       - IGMP version 3 update
       - Some QoS issues relating to IDMR
       - A heuristic for lower-cost multicast routing (a scheme
integrated       with M-OSPF for producing lower-cost multicast trees)


Mobile Ad-hoc Networking (manet) BOF
Joseph Macker, M. Scott Corson, and Stephen Batsell chairs A proposed
charter for a working group in the area of mobile ad-hoc networking
was introduced and discussed. Difficulties with existing protocols in
mobile scenarios were briefly discussed, and three candidate protocols
were presented that have the potential to provide efficient routing
solutions in ad-hoc mobile networks. It was decided that the scope of
the working group charter be narrowly focused on unicast routing, with
any future work being built upon the unicast results. If a working group
is formed, initial Internet-Drafts discussing each protocol will be
available prior to the December IETF.


Unidirectional Link Routing (udlr) BOF
Walid Dabbous chair
During the BoF session there were a presentation of the general problem
of integrating unidirectional links in the Internet, then two
presentations from INRIA and Hughes concerning respective proposed
solutions. There were also a presentation of the WIDE Internet project
and a short presentation on link layer considerations. Then the
discussions focused on comparing both INRIA and Hughes solutions
which are both being implemented and expected to be tested during the
next six months.
There were a general feeling that we need to carry on the
implementations, discuss the results of both solutions on the mailing
list and have another BoF session in San Jose's meeting.


Quality of Service Routing (qosr) BOF
Eric Crawley and Ross Callon chairs
The QoSR BoF met for one sesson on Friday, June 28th from 0900 to 1130.
The BoF was surprisingly well attended (for a Friday morning) with
144 people signing the roster, indicating quite a bit of interest in the
subject of Quality of Service Routing. Presentations on the general issues
for QoS Routing were delivered and discussed in the group. It was
determined that general architecture and requirements for QoS Routing
are needed to focus on the areas where changes and additions to
protocols may be necessary. A mailing list will be established to
continue the dialog.

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