2.5.6 Open Shortest Path First IGP (ospf)

NOTE: This charter is a snapshot of the 41st IETF Meeting in Los Angeles, California. It may now be out-of-date. Last Modified: 12-Feb-98


John Moy <jmoy@casc.com>

Routing Area Director(s):

Joel Halpern <jhalpern@newbridge.com>

Routing Area Advisor:

Joel Halpern <jhalpern@newbridge.com>

Mailing Lists:

General Discussion:ospf@gated.cornell.edu
To Subscribe: ospf-request@gated.cornell.edu
Archive: ftp://gated.cornell.edu/pub/lists/ospf

Description of Working Group:

The OSPF Working Group will develop and field-test an SPF-based Internal Gateway Protocol. The specification will be published and written in such a way so as to encourage multiple vendor implementations.

Goals and Milestones:

Jun 96


Complete OSPF for IPv6 specification and submit to IESG for consideration as a Proposed Standard.

Jun 96


Document current usage, update OSPFv2 and submit to IESG for consideration as a Standard.

Dec 96


Develop OSPF for IPv6 MIB and submit to IESG for consideration as a Proposed Standard.

Dec 96


Submit Internet-Draft on ISPF extensions of IPv6 to IESG for consideration as a Proposed Standard.

Jun 97


Update OSPF for IPv6 based on implementation experience, and submit to IESG for consideration as a Draft Standard.



Gather operational experience with the OSPF protocol and submit the document as an Informational RFC.



Develop multiple implementations, and test against each other.



Obtain performance data for the protocol.



Design the routing protocol, and write its specification.



Make changes to the specification (if necessary) and publish the protocol as a Draft Standard RFC.

Jun 98


Submit OSPF for IPv6 to IESG for consideration as a Standard.


Request For Comments:







OSPF Protocol Analysis



Experience with the OSPF Protocol



Guidelines for Running OSPF Over Frame Relay Networks



The OSPF NSSA Option



OSPF Database Overflow



Extending OSPF to Support Demand Circuits



OSPF Version 2 Management Information Base



IP Forwarding Table MIB



OSPF Version 2

Current Meeting Report

Minutes of the Open Shortest Path First IGP (ospf) Working Group

Chair: John Moy <jmoy@casc.com> (this session: Rob Coltun <rcoltun@fore.com>)


I. Administrivia, current documents status, 5-10 minutes
II. OSPF Proxy Par, 10 minutes (draft-ietf-ion-proxypar-arch-00.txt)
III. QoS OSPF, 20 minutes (draft-guerin-qos-routing-ospf-03.txt)
IV. OSPF Optimized Multipath, 15 minutes (draft-ietf-ospf-omp-00.[ps,txt])
V. NSSA Update, 5-10 minutes (draft-ietf-ospf-nssa-update-03.txt)

I. Rob presented the current OSPF document status.

The OSPF specification has finally moved to full standard. The Opaque LSA draft has been given to the IESG with a motion to move it to proposed standard.

II. Tony presented the new version of the proxy-par draft.

Changes have been made to the draft to reflect issues discovered during implementation. The NBMA model has been modified so that NBMA neighbors will ether be discovered through auto configuration or manual configuration. Mixing of the two modes is no longer permitted. There are currently four implementations under way.

III. Sanjay and George presented their work on QoS Routing mechanisms and OSPF extensions.

Sanjay first presented the modifications to the current draft which include:

There are two prototype implementations in progress. One in Gated and one proprietary version.

George presented some details of the Gated implementation.

George then presented some performance evaluation using very large flat networks using a 200Mhz pentium-2.

IV. Curtis presented a new model for OSPF Optimized Multipath.

Curtis then gave a number of simulation results comparing ECMP and OMP using various traffic/topology scenarios.

Slides are available from: ftp://engr.ans.net/pub/slides/ietf/mar-1998/ospf-omp-ietf.ps

V. Pat presented the updated version of the NSSA draft.

He gave a comparison of the new draft with the original RFC.

The working group ran until the end of the session and could have used more time. At the next IETF the WG should probably be meet for more than one hour as there are many new ideas in the works.


None Received

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