1. 21-07-0395-00-00001 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-07-0395-00-0000 Title: IETF Liaison Report Date Submitted: November 15, 2007 Presented at IEEE 802.21 session 23 in Atlanta Authors or Source(s): Yoshihiro Ohba Abstract: IETF Liaison Report as of November 2007

2. 21-07-0395-00-00002 IEEE 802.21 presentation release statements This document has been prepared to assist the IEEE 802.21 Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.21. The contributor is familiar with IEEE patent policy, as outlined in Section 6.3 of the IEEE-SA Standards Board Operations Manual and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/guide.html> Section 6.3 of the IEEE-SA Standards Board Operations Manualhttp://standards.ieee.org/guides/opman/sect6.html#6.3 http://standards.ieee.org/board/pat/guide.html IEEE 802.21 presentation release statements This document has been prepared to assist the IEEE 802.21 Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.21. The contributor is familiar with IEEE patent policy, as stated in Section 6 of the IEEE-SA Standards Board bylaws and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/faq.pdf> Section 6 of the IEEE-SA Standards Board bylawshttp://standards.ieee.org/guides/bylaws/sect6-7.html#6 http://standards.ieee.org/board/pat/faq.pdf

3. 21-07-0395-00-00003 MIPSHOP WG (1/2) MIS Problem Statement Draft draft-ietf-mipshop-mis-ps-04.txt AD Evaluation done Issue on proxy scenario Proxy scenario will be removed from the draft Another review by DCCP / IPDVB WG chair Issue on security requirement Annex J “Requirements to support 802.21 by L3 and above transport” of 802.21 D07-01 will be added to the draft Rev -05 will be submitted by Nov 19 Next Step: IESG Evaluation

4. 21-07-0395-00-00004 MIPSHOP WG (2/2) MIS Transport Solution Draft draft-melia-mipshop-mstp-solution-00.txt Initial Review by : David Griffith, Yoshihiro Ohba Issue on “Either TCP or UDP” requirements Suggested to allow other transports making TCP and UDP as mandatory supported transports for the server side Issue on requirement on DHCP authentication option for DHCP-based PoS discovery Issue on TLS vs. (D)TLS Rev -01 will be submitted by Nov 19 Next Step: Gain consensus to be a MIPSHOP WG draft

5. 21-07-0395-00-00005 HOKEY WG (1/3) Re-authentication related drafts Reauthentication Problem Statement draft: draft-ietf-hokey- reauth-ps-07.txt Ready for AD Evaluation Reauthentication Solution: draft-ietf-hokey-erx-07.txt WG Last Call completed Re-auth DoS attack mitigation by multiple link-layer SAs Added crypto-algorithm agility ERP server and DSRK server co-location vs. separation ERP assumes that ERP server is co-located on DSRK server

6. 21-07-0395-00-00006 HOKEY WG (2/3) Pre-authentication Problem Statement draft-ietf-hokey-preauth-ps-01.txt Reviewed by : Ajay Rajkumer and Maryna Komarova Excluded link-layer pre-authentication discussion (out of scope) Added description on the provisioning of the servers with database for authenticator discovery Added recommendation on non-cryptographic filtering at candidate authenticators Added a requirement on protection for context binding

7. 21-07-0395-00-00007 HOKEY WG (3/3) Three Party Key Distribution Draft draft-ietf-hokey-key-mgm-01.txt Simplification (28 pages -> 18 pages) Consistency with other HOKEY draft - Added comprehensive mapping between different scenarios and key distribution parameters Added recursively combined key distribution example for optimized hierarchical key distribution

8. 21-07-0395-00-00008 DNA WG Reality check: comments from OS vendors that the DNA protocol (draft-ietf-dna-protocol-06) is too complex to implement Router changes are needed Handling of corner cases adds complexity to normal use cases Some of the DNA Goals are not really necessary/useful A simpler version of DNA protocol has been proposed: draft-krishnan-dna-simple-00.txt