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- Editor's Note: Minutes received 7/31}
-
- CURRENT_MEETING_REPORT_
-
-
- Reported by Matt Mathis/PSC
-
- Minutes of the Border Gateway Protocol Deployment and
- Application Working Group (BGPDEPL)
-
- Executive Summary
-
- The Internet BGP topology was presented. There are about 25
- administrative systems which are reachable from the NSFnet via EGP2, and
- about 40 which are reachable via BGP.
-
- Peter Lothberg described the European EBONE BGP deployment. In several
- ways EBONE is further along in BGP deployment than US networks.
-
- Several vendors described the status of their implementations. CISCO
- and Cornell gated have BGP3 running today, and are working on BGP4. BBN
- has BGP3 running and is working on BGP4. Other vendors including
- Proteon and Wellfleet are actively working on BGP3 in preparation for
- BGP4.
-
- ANS intends to have BGP4 deployed January 1993 and has offered to help
- vendors with interoperability testing. Vendors can arrange to bring
- equipment into the ANS test facility. ANS is also exploring support for
- remote testing by ``tunneling'' BGP from the ANS test network through
- the NSFnet. Contact Jordan Becker for further information.
-
- Minutes
-
- Two representations of the known BGP topology of the Internet were
- presented. The first was a map compiled by Jessica Yu, of Merit, which
- is compilation of several sources including Merit configuration
- databases and routing information extracted from the NSFnet T1 and T3
- backbones. The other was BGP routing table as extracted from a router
- in Pittsburgh which was peering with both NSFnet backbones. The BGP
- topology includes about 40 administrative systems. There are only 25
- administrative systems which are visible with EGP2 as the protocol of
- origin. Note that EGP2 does not propagate further topological detail,
- so there are additional EGP2 only administrative systems beyond the 25
- which are visible.
-
- One interesting artifact was noted: The T1 backbone does not run IBGP
- so it can not propagate BGP path information. All BGP routes learned
- via the T1 backbone show one administrative system beyond the backbone
- itself with the ``incomplete'' origin attribute. This is dangerous
- because it completely defeats BGP loop suppression.
-
- Peter Lothberg described the European EBONE BGP deployment. They are
- using BGP3 in an unusual configuration where it is, in effect, their
- interior routing protocol. All EBONE routers are border routers.
- (There are no interior routers). The EBONE IGP (cisco's IGRP) is used
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- only to distribute the EBONE internal links and interfaces. The IGP
- does not carry exterior routes at all. IBGP is run as a fully
- interconnected mesh between all routers. Tony Li of cisco added a
- configuration feature to BGP to defeat the IGP alignment check. Thus
- every router has an IBGP route for for all exterior networks and an IGP
- route for EBONE routers. Packet switching takes two route lookups: one
- to select the exit router and then to find the interior route to that
- exit router.
-
- Peter described several routing misadventures that they encountered, as
- well as European configuration management issues and related politics.
-
- Several vendors described the status of their implementations. Nearly
- all of the major router vendors were present and actively working on
- various aspects of BGP.
-
-
- o Proteon plans to support BGP3 in release 13 for ``all platforms''
- by the end of the year.
-
- o Wellfleet plans to have BGP3 in mid '93.
-
- o BBN will be replacing the MILNET mailbridges by T20s in about six
- months. the T20's will do IBGP with each other, and will support
- BGP2, BGP3 and EGP2.
-
- o cisco did a full rewrite of their BGP code earlier this year.
- Version 9.02 has many patches from early testing in Alternet and
- NEARnet. Check release notes on ftp.cisco.com.
-
- o The T3 backbone (ANS) will be running BGP3 in the fall, using a
- gated based implementation. (The current version is routed based).
- They plan to have BGP4 early '93.
-
- o CA*NET is currently using BGP3 in gated. BGP4 will require
- significant changes to gated, but may be available in the fall.
- The current Cornell gated code includes the CA*NET BGP3 code.
-
-
- There was discussion about what the mid-levels could to help the
- vendors. Tony Li of cisco indicated that test installations would be
- useful. Their primary tool has been core dumps from sites which are
- having problems. It was noted that it is difficult to test BGP in a
- laboratory, because the interesting behaviors come from its ability to
- represent complex events in the global internet.
-
- Jordan Becker volunteered to provide vendors with access to the ANS test
- facility for BGP interoperability testing. Contact him for details.
-
- There was also discussion about adding a feature to the ANS gated to
- support BGP tunneled from the ANS test facility across the Internet.
- This would permit remote vendors to do initial interoperability testing
- in their own labs. The necessary code change is trivial but there are
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- some operational and scheduling issues to be addressed. Contact Jordan
- Becker.
-
- There was a short discussion of the forms being used for exchanging
- Routing Policy and configurations. These forms are an initial attempt
- at a mechanism to detect certain classes of global policy
- inconsistencies. RIPE commented that the forms should be network
- oriented, and not AS oriented.
-
- Attendees
-
- Nagaraj Arunkumar nak@3com.com
- Tony Bates tony@ean-relay.ac.uk
- Jordan Becker becker@nis.ans.net
- David Bolen db3l@nis.ans.net
- Henry Clark henryc@oar.net
- Michael Craren mjc@proteon.com
- John Curran jcurran@bbn.com
- Osmund de Souza osmund.desouza@att.com
- Dino Farinacci dino@cisco.com
- Stefan Fassbender stf@easi.net
- Dennis Ferguson dennis@mrbill.canet.ca
- Peter Ford peter@lanl.gov
- Vince Fuller vaf@stanford.edu
- Der-Hwa Gan dhg@nsd.3com.com
- Elise Gerich epg@merit.edu
- Eugene Hastings hastings@a.psc.edu
- Kathleen Huber khuber@bbn.com
- Steven Hubert hubert@cac.washington.edu
- Paulina Knibbe knibbe@cisco.com
- Mark Knopper mak@merit.edu
- John Krawczyk jkrawczy@wellfleet.com
- Tony Li tli@cisco.com
- Daniel Long long@nic.near.net
- Matt Mathis mathis@a.psc.edu
- Dennis Morris morrisd@imo-uvax.disa.mil
- Brad Passwaters bjp@sura.net
- Robert Reschly reschly@brl.mil
- Erik Sherk sherk@sura.net
- Roxanne Streeter streeter@nsipo.arc.nasa.gov
- Marten Terpstra terpstra@ripe.net
- Carol Ward cward@westnet.net
- Chris Wheeler cwheeler@cac.washington.edu
- Linda Winkler lwinkler@anl.gov
- Jane Wojcik jwojcik@bbn.com
- Paul Zawada Zawada@ncsa.uiuc.edu
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