Network Mobility Support in IPv6

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Network Mobility Supportin IPv6

• Thierry Ernst - Motorola Labs INRIA (Planete)

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Subject 1

• Subject 1 what is Network Mobility Support
• Subject 2 Network Mobility Support with Mobile
  IPv6
• Subject 3 We solicit agreement of the working
  group for a number of motions

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Network Mobility Support Introduction

• Have you read Network Mobility Support in IPv6
  Problem Statement and Requirements
  (draft-ernst-mobileip-monetv6-00.txt) ?
• posted July 2001
• protocol-independent understanding (e.g. NOT
  based on Mobile IPv6)
• terminology
• problems
• requirements

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Network Mobility Support Terminology

• MNNs different kind of nodes in the mobile
  network
• Mobile Router (MR) Border router of the mobile
  network
• LFNs Local Fixed Nodes permanently located in
  mobile network
• LMNs Local Mobile Nodes that belong to the
  mobile network
• VMNs Visiting Mobile Nodes that do not belong
  to the mobile network
• CNs all nodes communicating with MR, LFNs and
  LMNs, VMNs

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Network Mobility Support

• Objectives of Network Mobility Support
• permanent connectivity for ALL MNNs
• optimal routing between CNs and ALL MNNs
• Problems and Requirements in draft describe the
  scenarios and issues
• Network Mobility Support deserves its own
  solutions

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Subject 2

• Subject 1 what is Network Mobility Support
• Subject 2 Network Mobility Support with Mobile
  IPv6
• Subject 3 We solicit agreement of the working
  group for a number of motions

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Potential Solutions

• Network Renumbering
• how do you perform optimal routing ?
• Routing
• does not scale to wide-area network
• Mobile IPv6-based
• MIPv6 may be a good candidate solution
• needs extensions
• needs to be evaluated first

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Mobile IPv6-based solution issues

• There is no explicit support of mobile networks
  in the Mobile IPv6 specification. Issues
• redirection by the HA of packets intended to MNNs
  is not clear
• optimal routing between CNs and MNNs
• nested mobility
• VMNs,
• LMNs,
• Mobile IP-subnet in the mobile network itself
• scalability to a large number of mobile networks
• how should the MR run a routing protocol ?
• What should we do with router advertisements sent
  on the home link ?
• What if several routers in the mobile network ?
• How it interacts with the routing protocol
  running in the home / visited network ?
• Some issues highlighted in draft
  ernst-mobileip-v6-02.txt
• draft focus on LFNs.gt not all isssues are covered

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Mobile IPv6-based solution Current Proposals

• Before draft-ietf-mobileip-ipv6-14
• support of mobile networks not considered
• this has been demonstrated in draft-ernst-mobileip
  -v6-network-00.txt at 48th IETF Pittsburgh August
  01.
• draft-ietf-mobileip-ipv6-14 posted last July
• adds a new sub-option that tells the prefix
  length to HA and CNs
• we think that this section
• tries to solve a problem which is not yet
  well-understood in the Mobile IP community
• does not solve the whole issue
• adds more issues (particularly security)
• at the risk of further delaying MIPv6 as Proposed
  Standard

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Mobile IPv6-based solution Current Proposals

• Prefix Scope Binding Update (MOTOROLA / INRIA)
• draft-ernst-mobileip-v6-network-02.txt
• more appropriate to support LFNs
• HMIPv6 Extended Mode (ERICSSON / INRIA )
• draft-ietf-mobileip-hmipv6-04.txt
• more appropriate to support VMNs

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Mobile IPv6-based solution appropriate?

• All issues not covered
• All solutions may not scale to a large number of
  CNs or a large mobile network
• Shall we base solution on Mobile IPv6 ?
• Mobile IPv6s suitability must be studied first.
• List all issues pertaining to MIPv6
• Define the scope of the problem with respect to
  MIPv6
• Do we want to support all kind of networks with
  MIPv6 ?
• Is that even feasible ???

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Subject 3

• Subject 1 what is Network Mobility Support
• Subject 2 Network Mobility Support with Mobile
  IPv6
• Subject 3 We solicit agreement of the working
  group for a number of motions

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1st Motion

• Mobile IP WG is the right place to discuss
  Network Mobility Support
• Add Network Mobility Support in the Mobile IP WG
  Charter
• 2 main objectives
• provide continuous Internet access to ALL MNNs
• offer optimal routing between CNs and ALL MNNs

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2nd Motion

• The Mobile IP Working Group needs
• to agree on a terminology
• to define the scope of the problem
• to define the requirements
• Add Deliverables in Mobile IP WG
• A draft that defines
• terminology
• requirements
• based on draft-ernst-mobileip-monetv6-00.txt
• A draft that
• lists Mobile IPv6 issues
• defines the scope of the problem with respect to
  MIPv6
• Could be a single draft depending on if solutions
  should (could ?) be based on Mobile IPv6 or not

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3rd Motion

• Network Mobility Support SHALL NOT further delay
  Mobile IPv6 as Proposed Standard
• Potential extensions shall be included in a
  separate document
• new features must not be included in MIPv6
• the sub-option included in draft-v14 shall be
  removed
• We should only make sure that what is already in
  the Mobile IPv6 specification does not prevent
  network mobility support

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4th Motion

• Adopt Prefix Scope Binding Updates
  (draft-ernst-mobileip-v6-network-02.txt) as a
  working group draft
• basic support of MNNs
• only left issue authorization to register a
  careof address for a prefix

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Thank you

• Fore more information
• http//www.inrialpes.fr/planete/
• Draft, presentation made at the IETF and other
  documents
• Network Mobility Support in IPv6 Problem
  Statement and Requirements
• draft-ernst-mobileip-monetv6-00.txt
• Prefix Scope Binding Updates
• draft-ernst-mobileip-v6-network-02.txt
• HMIPv6 Extended Mode
• draft-ietf-mobileip-hmipv6-04.txt
• Seamoby Working Group - micro-mobility design
  team
• draft-ietf-seamoby-mm-problem-01.txt