2.5.1 IP Routing for Wireless/Mobile Hosts (mobileip)

NOTE: This charter is a snapshot of the 50th IETF Meeting in Minneapolis, Minnesota. It may now be out-of-date. Last Modified: 14-Mar-01


Phil Roberts <phil.roberts@motorola.com>
Basavaraj Patil <basavaraj.patil@nokia.com>

Routing Area Director(s):

David Oran <oran@cisco.com>
Rob Coltun <rcoltun@redback.com>

Routing Area Advisor:

David Oran <oran@cisco.com>

Mailing Lists:

General Discussion:mobile-ip@sunroof.eng.sun.com
To Subscribe: mobile-ip-request@sunroof.eng.sun.com
In Body: (un)subscribe
Archive: http://www.nortelnetworks.com/standards

Description of Working Group:

The Mobile IP Working Group has developed routing support to permit IP nodes (hosts and routers) using either IPv4 or IPv6 to seamlessly "roam" among IP subnetworks and media types. The Mobile IP method supports transparency above the IP layer, including the maintenance of active TCP connections and UDP port bindings. Where this level of transparency is not required, solutions such as DHCP and dynamic DNS updates may be adequate and techniques such as Mobile IP not needed.

The WG moving forward will focus on deployment issues in Mobile IP and provide appropriate protocol solutions to address known deficiencies and shortcomings. For example, the wireless/cellular industry is considering using Mobile IP as one technique for IP mobility for wireless data. The working group will endeavor to gain an understanding of data service in cellular systems such as GPRS, UMTS, CDMA2000, and interact with other standards bodies that are trying to adopt and deploy Mobile IP WG protocols in these contexts. In order to provide a complete solution and a set of protocols that can be used as a roadmap for widespread deployment, the following work needs to be accomplished by this WG. In the near term, the WG needs to work on:
- Use of NAIs to identify mobile users/nodes.
- Specifying how Mobile IP should use AAA functionality to support inter-domain and intra-domain mobility.
- Develop solutions for IPv4 private address spaces for the scenarios needed for deployment.
- Documenting any requirements specific to cellular/wireless networks.
In the longer term, the WG needs to address:
- QoS in the mobile IP environment using diff-serv and/or int-serv/RSVP.
- Location Privacy.
The Working Group will ensure that solutions proposed for these problem domains are suitable for IPv4 and IPv6 respectively.

Goals and Milestones:



Review and approve the charter, making any changes deemed necessary.



Post an Internet-Draft documenting the Mobile Hosts protocol.



Review the charter of the Mobile IP Working Group for additional work required to facilitate non-host mobility.



Submit the IPv4 Mobile Host Protocol to the IESG as a Proposed Standard.



Submit the IPv6 Mobile Host Protocol to the IESG as a Proposed Standard.



Submit Internet-Draft for NAI support in Mobile IP to IESG for consideration as a Proposed Standard.



Review security framework requirements for Mobile IP.



Review solutions and submit drafts for mobility in private address spaces.



Supply AAA requirements for Mobile IP to the AAA Working Group

Sep 00


Submit the IPv4 Mobile IP Protocol to the IESG for consideration as a Draft Standard.

Oct 00


Review the WG charter and update as needed.

Dec 00


Develop an access technology independent method for supporting low latency handover between access points within an administrative domain or across administrative domains.

Jul 01


Review QoS in a Mobile IP enabled network.

Aug 01


Submit Mobile IPv6 MIB to IESG for consideration as a Proposed Standard.

Request For Comments:






Applicability Statement for IP Mobility Support



Minimal Encapsulation within IP



IP Encapsulation within IP



IP Mobility Support



The Definitions of Managed Objects for IP Mobility Support using SMIv2



Sun's SKIP Firewall Traversal for Mobile IP



Mobile IP Network Access Identifier Extension for IPv4



Mobile IP Authentication, Authorization, and Accounting Requirements



Mobile IP Challenge/Response Extensions



Reverse Tunneling for Mobile IP, revised



Mobile IP Vendor/Organization-Specific Extensions

Current Meeting Report

Thanks to David Frascone for providing the meeting minutes of the Mobile IP WG meeting at IETF50.

Thursday, March 22nd 2001 - 9:00 AM - 11.30 AM

>> Agenda bashing:

>> WG Doc status:

>> Milestone Review

>> IESG Security concerns with MIPv6

9:14 - Jeff Schiller - Security and Mobile IPv6

Discussed the security issues from the perspective of scalability and the way IPSec is used in Mobile IP.

For the extended debate and questions, please look at section A1 of these minutes.

Connectathon Report:

Alper Yegin:

Carl Williams:

Handoff Discussions

>>George Tsirtsis(IPv6 fast handoff):


>> Youngjune Gwon

Discussion at end of this report in section A3

Improving network renumbering in MIPv6
TJ Kniveton

Hesham Soliman

Detailed discussion in section A2.

>>Two more scheduled timeslots had to be cancelled as the time allocated for the WG ran out. The other two slots were:

1. Dynamic configuration of Mobile hosts (Sandy Thuel)
2. QoS Discussion (Hemant Chaskar)


A1: Security in MIPv6 discussion

A2: HMIPv6 Discussion

A3 : draft-gwon-mobileip-l3mp-mipv4-00.txt)


Dynamic Home Addressing in Mobile IP Using Transient Tunnels
Layer 3 Triggered Predictive MIPv4 Handoff
QoS Support in Mobile IPv6
Interoperability Testing Report
Improving Network Renumbering in Mobile IPv6
Low Latency Handoffs in Mobile IPv4
Fast MIPv6 Handoff
Security and Mobile Ipv6