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 It may now be out-of-date.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
Chair(s):
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. |
Done |
|
Gather operational experience with the OSPF protocol and submit the document as an Informational RFC. |
Done |
|
Develop multiple implementations, and test against each other. |
Done |
|
Obtain performance data for the protocol. |
Done |
|
Design the routing protocol, and write its specification. |
Done |
|
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. |
Internet-Drafts:
· OSPF for IPv6
· The OSPF Opaque LSA Option
· OSPF Standardization Report
· The OSPF NSSA Option
· The OSPF Address Resolution Advertisement Option
· OSPFv2 Domain Of Interpretation (DOI) for ISAKMP
· OSPF over ATM and Proxy PAR
· OSPF Version 2
· OSPF Optimized Multipath (OSPF-OMP)
Request For Comments:
RFC |
Status |
Title |
RFC1245 |
OSPF Protocol Analysis | |
RFC1246 |
Experience with the OSPF Protocol | |
RFC1586 |
Guidelines for Running OSPF Over Frame Relay Networks | |
RFC1587 |
PS |
The OSPF NSSA Option |
RFC1765 |
E |
OSPF Database Overflow |
RFC1793 |
PS |
Extending OSPF to Support Demand Circuits |
RFC1850 |
DS |
OSPF Version 2 Management Information Base |
RFC2096 |
PS |
IP Forwarding Table MIB |
RFC2178 |
DS |
OSPF Version 2 |
Minutes of the Open Shortest Path First IGP (ospf) Working Group
Chair: John Moy <jmoy@casc.com> (this session: Rob Coltun <rcoltun@fore.com>)
Agenda
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:
· Reclaiming of the ToS option bit (which has been removed from the OSPF spec) to be used for QoS capabilities.
· More details added to the Dijkstra-based algorithms.
· Added some discussion of handling link metric inaccuracies to the Appendix.
There are two prototype implementations in progress. One in Gated and one proprietary version.
George presented some details of the Gated implementation.
· It provides interfaces with RSVP and a dummy traffic manager module.
· Implemented for a single OSPF Area which must not contain virtual links and must all be running QoS OSPF.
· Contain most of the QoS extensions with minimum changes to the OSPF protocol.
· Only deals with bandwidth guarantees. Available bandwidth encoded in ToS field.
· QoS paths are pre-computed.
· QoS Routing table added separate to Gated routing table.
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.
· Standard equal-cost multi-path forwarding algorithms divides packets equally among the multiple paths without regard to load which is divided unequally among the equal cost paths.
· OMP defines mechanisms which divide packets un-equally among the multiple paths but optimizes the load between the equal paths.
· OMP mechanisms includes flooding of load information in the Opaque LSA, a 16-bit hash space to provide the basis for a fine adjustment granularity, additional data structures to keep track of sets of equal costs, and mechanisms to push the load split parameters into the forwarding base.
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
Roster Not Submitted