Softwires
IETF 65
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Please consult RFC 3978 for details.
Agenda
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05 mins: Admistrativa
25 mins: Report from the Interim Meeting
30 mins: Mesh
30 mins: Hubs and Spokes
10 mins: Fred Templin IP tunneling and
MTU
• 10 mins: General documents the working
group needs to take on
• 10 mins: Next Steps and Phase 2
Interim Meeting Summary.1
• NOTES:
http://bgp.nu/~dward/softwires/200602SoftwiresInterimNotes.html
• Reviewed some current deployments
– KDDI, Freenet6
• Reviewed Security Analysis
• Criteria for selection was evaluated based on MUSTs
from Problem Statement
– ATS6, TSP, 2@L2TPv2, L2TPv3 were proposed as solutions
for Hub & Spoke
– V4overV6 and tunnel saf were proposed as solutions for
Mesh
Interim Meeting Conclusions.1
1. Attendees reached consensus on solutions for both scenarios
• L2TPv2 was selected as Phase 1 solution for H&S
• L2TPv3 was selected as Phase 2 solution for H&S
• Combined MPBGP solutions from Yong Cui and C. Metz was selected
for Mesh solution
2. Attendees reached conclusion on next steps
• Phase 1 Framework solution for H&S to be written immediately
How to solve H&S scenarios w/ L2TPv2
• Phase 2 Framework solution for H&S to be presented as soon as
Phase 1 is documented
How to solve all H&S requirements w/ L2TPv3 and propose
extensions
• Create Framework doc for solutions to Mesh scenario
How to solve all Mesh requirements w/ MPBGP and propose
extensions
Adopt Multicast solution by Shepherd, Wu, Li, Farinacci as WG doc
• Adopt security analysis and radius extensions as WG docs
Interim Meeting Conclusions.2
• Meeting continued second day w/ break out sessions on two
scenarios
• Proposed third interim meeting in “September”
• Discuss Framework for Phase 2 H&S
• List extension set for Phase 2
• Finalize extension set for Mesh
• Meeting in Hong Kong was very successful
• Many thanks to hosts: CERNET and CHUK
• Many thanks to Mark Townsley (INT AD) for being
present and keeping us to present and future process
• Rough consensus was achieved and notes posted to list
WG activities since the interim meeting
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The chairs posted on March 3rd a message with the title: "Notes and Consensus
from Interim Meeting in Hong Kong". A number of clarification questions were asked
on the mailing list since.
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Problem Statement draft at -01. Needs final, final edits in -02 (any second now)
Softwire ML statistics since the interim meeting:
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26 From: Jordi Palet Martinez
15 From: Alain Durand
12 From: Maria A. Dos Santos
11 From: David Ward
8 From: JF Tremblay
7 From: Michael Fiumano
5 From: Bill Storer
3 From: Tim Chown
2 From: Ole Troan
1 From: HUI-HCHBJ DENG
1 From: Eric Gray
1 From: Laurent Toutain
1 From: Tschofenig, Hannes
1 From: Bruno STEVANT
1 From: Marc Blanchet
1 From: Pekka Savola
Much interesting discussion on TTM, support, deployment and technical criteria
– No Open issues remain
Consensus
• Given that:
– There was discussion involving many wg participants
– No open issues considered remaining
– Solution providers will represent a common vision in next
presentations as stated in interim meeting notes and
conclusion
• We declare rough working group consensus:
– Hub & Spokes scenario:
• L2TPv2 chosen as the immediate solution
• L2TPv3 in phase 2 as a backward compatible upgrade
– Mesh scenario:
• Conjoined effort for extensions to MPBGP based on work presented
by Chris Metz and Yong Cui
Presentations
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Mesh
H&S
Fred
Next steps
Deliverables
• General docs
– Security analysis
– Radius accounting
• Mesh
– Framework doc using MPBGP
– Multicast draft extensions
– tunnel-safi and any additional softwires attributes
• To be reviewd by L2VPN, L3VPN, IDR, Security types
• Hub and Spoke
– Phase 1 Framework doc using L2TPv2
– Phase 2 Framework doc using L2TPv3
Extensions
Next Deliveries
• July 2006
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Security analysis
Radius accounting
Mesh Framework doc using MPBGP
Mesh Multicast draft extensions
Mesh tunnel-safi and any additional softwires attributes
– Hub and Spoke Phase 1 Framework doc using L2TPv2
• Potential Interim WG meeting September 2006
– Focus on Hub and Spoke Phase 2 and Mesh extensions
• November 2006
– Hub and Spoke Phase 2 Framework doc using L2TPv3
– Any new Mesh extensions
• March 2007
– Hub and Spoke Phase 2 Extensions