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Network Mobility Support in IPv6 Thierry Ernst - Motorola Labs & INRIA (Planete) 51st IETF London - Thierry Ernst - August 2001 1 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 51st IETF London - Thierry Ernst - August 2001 - 2 PLANETE TEAM Network Mobility Support: Introduction Have you read “Network Mobility Support in IPv6: Problem Statement and Requirements” (draft-ernstmobileip-monetv6-00.txt) ? posted July 2001 protocol-independent understanding (e.g. NOT based on Mobile IPv6) • terminology • problems • requirements 51st IETF London - Thierry Ernst - August 2001 - 3 PLANETE TEAM 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 CN HA MN’s home link AR MN AR HA home link foreign link LFN MR LFN MR Router Router VMN LFN LFN LFN LFN 51st IETF London - Thierry Ernst - August 2001 - 4 PLANETE TEAM 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 51st IETF London - Thierry Ernst - August 2001 - 5 PLANETE TEAM 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 51st IETF London - Thierry Ernst - August 2001 - 6 PLANETE TEAM 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 51st IETF London - Thierry Ernst - August 2001 - 7 PLANETE TEAM 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.=> not all isssues are covered 51st IETF London - Thierry Ernst - August 2001 - 8 PLANETE TEAM 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-network00.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 51st IETF London - Thierry Ernst - August 2001 - 9 PLANETE TEAM 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 51st IETF London - Thierry Ernst - August 2001 - 10 PLANETE TEAM 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 IPv6’s 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 ??? 51st IETF London - Thierry Ernst - August 2001 - 11 PLANETE TEAM 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 51st IETF London - Thierry Ernst - August 2001 - 12 PLANETE TEAM 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 51st IETF London - Thierry Ernst - August 2001 - 13 PLANETE TEAM 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 51st IETF London - Thierry Ernst - August 2001 - 14 PLANETE TEAM 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 51st IETF London - Thierry Ernst - August 2001 - 15 PLANETE TEAM 4th Motion Adopt “Prefix Scope Binding Updates” (draft-ernstmobileip-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 51st IETF London - Thierry Ernst - August 2001 - 16 PLANETE TEAM 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 51st IETF London - Thierry Ernst - August 2001 - 17 PLANETE TEAM