1. Update on the Internet Research Task Force
Aaron Falk
IRTF Chair
IETF-75 – Stockholm

2. IRTF Status Five Research Groups (RGs) are meeting this week
Delay Tolerant Networking RG
Routing RG
Host Identity Payload RG
Peer-to-Peer RG
Internet Congestion Control RG
Reviewed the DTNRG with the IAB
IETF Stockholm

3. IRTF Status Still working on IRTF RFC Stream desired copyrights
Intent is to maximize commonality with IETF process (use IETF trust, ID boilerplate, etc)
Permit unlimited derivative works, no derivative works
0 IRTF RFCs published since last IETF
5 docs waiting
Publication is (still) wedged on finalizing:
draft-iab-streams-headers-boilerplates
draft-housley-iesg-rfc3932bis
IETF Stockholm

4. IRTF Status (2)
New RG chartered: Public Key Next- Generation Research Group (PKNG)
Looking into alternate certificate formats, semantics, and PK services that could eventually replace PKIX if deployed
Paul Hoffman, chair
Network virtualization still cooking
IETF Stockholm

5. RG Energy Levels Active Quiescent ASRG CFRG DTNRG HIPRG ICCRG MOBOPTS
P2PRG
RRG
E2ERG
NMRG
SAMRG
TMRG
(Unchanged* from IETF-74)
IETF Stockholm

6. A brief introduction to a couple of research groups…

7. Host Identity Protocol Research Group

8. Present Dual Role of IP Addresses
IP addresses in present Internet serve two roles
Identifying the host during communication
Locating the host within Internet routing system
Applications and transport protocols use IP addresses directly
During mobility transport connections break down and applications can fail
IETF Stockholm

9. Host Identity Protocol
HIP is a host-based approach to implement identifier/locator split in the Internet
Host are identified with self- generated public-private keys
Secure support for mobility, multihoming, IPsec encapsulation
RFC4843, RFC
First commercial HIP products have been announced
IETF Stockholm

10. HIPRG in a Nutshell RG exists in parallel with HIP WG
Has met nearly at all IETFs since 2004
Focuses on discussing ideas not yet ready for IETF process
Has matured and migrated several drafts to WG: NAT traversal, native API, certificates, support for legacy applications
A forum to present HIP extensions and experiments
Working on an experiment report summarizing experience of HIP use
IETF Stockholm

11. HIPRG Status RG currently works on number of HIP extensions
The use of HIP for object identification ”Internet of Things”
Hierarchical HIT, host ID revocations
ID to locator resolution using DHT and DNS
Mobile router extensions
Published RFC5207 ”NAT and Firewall Traversal Issues of Host Identity Protocol (HIP) Communication”
Updates on HIP experiments for P2PSIP, Teredo, BodyNets, Secure Mobile Architecture
Completing the experimental report (draft-irtf-hip- experiment-04)
If you’ve been playing with HIP, please give us feedback!
IETF Stockholm

12. HIPRG Plans
Adopt a few drafts as RG items based on the sustained interest of participants
Help WG in promoting HIP to standard track
Encourage IETFers to install and try HIP on their computers
E.g., a good solution for road warriors to access files at home server “Mobile VPN”
The current HIP implementations:
More info
HIP article in the IP Journal (March 09), a book at
IETF Stockholm

13. Internet Congestion Control Research Group

14. ICCRG – Motivation, Background
OS Implementers
IETF Transport Area
Research Community
ICCRG
Standard TCP congestion control is not fit for today‘s Internet
Slow with high b*d links, issues with wireless, etc.
Also not the right choice for all applications
Increasing deployment of non- standardized high-speed TCP variants
e.g. C-TCP (included in Windows Vista), CUBIC (default in some Linux distributions), H-TCP, and others
The ICCRG considers new directions and techniques for congestion control in the context of the Internet
IETF Stockholm

15. What ICCRG is Doing ... Future Vision Existing RFCs Open Issues
Organizing the existing congestion control related RFCs
ICCRG wrote a roadmap (in RFC-Editor Queue)
Identifying real, open issues with current congestion control techniques; many motivated by IETF WG-identified issues
ICCRG wrote a survey
Creating a vision to move beyond current limitations of TCP-friendliness concepts
ICCRG design team on a capacity sharing architecture
Existing RFCs
TCP, SCTP
TFRC
Multicast
etc
Open Issues
Heterogeneity
Stability
Fairness
… (many more)
Future Vision
Architecture
Network Role
End-host Role
IETF Stockholm

16. This week in the ICCRG
The Future of Congestion Control: Feedback From An Implementer's Perspective
Report related to evaluation of CUBIC and H-TCP as experimental TCP congestion control mechanisms
Beyond TCP-friendly Design Team & Internet Capacity- Sharing Architecture
Vision for enabling capacity sharing within the network infrastructure, rather than simply at the end-hosts
Research topics:
MulTFRC - Congestion control with tunable aggression (“N-TCP- friendliness“)
Explicit Feedback on Access Links – Using mechanisms like Quick- Start & XCP on access link bottlenecks even if end-to-end deployment isn‘t possible
IETF Stockholm

17.
IETF Stockholm