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isis-minutes-93mar.txt
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1995-03-01
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CURRENT_MEETING_REPORT_
Reported by Dino Farinacci/cisco
Minutes of the ISIS for IP Internets Working Group (ISIS)
Standards Progression (Integrated IS-IS)
o Proposed standard for over 2 years - what should we do?
o Write an interworking proof.
o Testing all features.
Radia Presented IS-IS Multicasting
o The scheme she describes was designed in DECNET Phase V but was
taken out.
- Uses multicast bit in the system-id field of an NSAP. Packet is
routed to area and then distributed across a multicast tree in
the area. (Multicast to whole area).
Radia Presented NLSP Differences From IS-IS
o Latch on to DR so changes are minimized.
o Radia proposes a configuration knob to have a priority increase
after a router becomes DR.
Radia Presented the Multi-Area Router Concept
o A router has connection to two LANs that are in different areas.
The router internally is two virtual routers.
Radia Presents How IS-IS Can Implement Multiple Levels of Hierarchy
o Nested circles can be configured to multiple levels of abstraction.
This allows IS-IS to scale to larger routing domain sizes.
Discussed the Issue About a Maximum of 256 LSP Fragments
o Discussed increasing the size of the LSP fragment number from the
LSPID.
o Discussion shifted to scaling issues related to injecting externals
into an IGP.
Range of Metrics in IS-IS
o Increase metric to 16-bits for internal and 32-bits for external
IS-IS Over NBMA WANs
o Radia describes NSAP addresses that have E.164 IDPs where you can
``get routing for free.'' This can be used for CLNP.
o For non-CLNP protocols, Radia wants to avoid SMDS multicast because
of the coordination required with the phone company.
o Each node knows about a subset of the routers on the WANs. With
transitive closure a DR is elected and responsible for knowing all
nodes on the WAN. The non-DR routers flood LSPs to the DR only and
the DR floods to the rest of the nodes.
Attendees
Michael Anello mike@xlnt.com
Ross Callon rcallon@wellfleet.com
Jeff Carman tcarman@bnr.ca
John Chang jrc@uswest.com
Richard Colella colella@nist.gov
Dino Farinacci dino@cisco.com
Dennis Ferguson dennis@ans.net
Eric Fleischman ericf@act.boeing.com
Eugene Geer ewg@cc.bellcore.com
Chris Gunner gunner@dsmail.enet.dec.com
Robert Hinden hinden@eng.sun.com
Kathy Huber khuber@bbn.com
David Jacobson dnjake@vnet.ibm.com
Matthew Jonson jonson@server.af.mil
Tracy Mallory tracym@3com.com
David Meyer meyer@ns.uoregon.edu
Gerry Meyer gerry@spider.co.uk
Matthew Morrisey morrisey@wpsp01.hq.aflc.af.mil
Radia Perlman perlman@dsmail.enet.dec.com
Benny Rodrig 4373580@mcimail.com
Michael Safly saf@tank1.msfc.nasa.gov
John Scudder jgs@merit.edu
Kamlesh Tewani ktt@arch2.att.com
Curtis Villamizar curtis@ans.net