An IPv6 Distributed Client Mobility Management approach using existing mechanisms draft-bernardos-mext-dmm-cmip-00 Carlos J. Bernardos – Universidad Carlos.

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Presentation transcript:

An IPv6 Distributed Client Mobility Management approach using existing mechanisms draft-bernardos-mext-dmm-cmip-00 Carlos J. Bernardos – Universidad Carlos III de Madrid Antonio de la Oliva – Universidad Carlos III de Madrid Fabio Giust – Institute IMDEA Networks & Universidad Carlos III de Madrid Prague, MEXT WG, 2011-04-01 80th IETF, Prague draft-bernardos-mext-dmm-cmip-00 MEXT WG, 2011-04-01

draft-bernardos-mext-dmm-cmip-00 Motivation Current IP mobility approaches rely on a central anchor point (either HA or LMA) Issues: Sub-optimal routing Reliability Scalability Lack of granularity (mobility is offered on a per- mobile basis) Signaling overhead 80th IETF, Prague draft-bernardos-mext-dmm-cmip-00 MEXT WG, 2011-04-01

FAMA. Basic principles (I) Flat Access and Mobility Architecture (FAMA)[1] DMM approach for Client MIP, using existing approaches Mobile IPv6 : RFC 3775 Authorizing MIPv6 BU with CGAs: draft-laganier-mext-cga The HA is moved to the edge Distributed Anchor Router (DAR) Deployed in the MN’s default gateway (first hop router) Each time an MN attaches to a DAR, it gets a topologically valid address [1] F. Giust, A. de la Oliva, C. J. Bernardos, “Flat Access and Mobility Architecture: an IPv6 Distributed Client Mobility Management solution”, accepted in Mobiworld 2011, co-located with IEEE INFOCOM 2011

FAMA. Basic principles (II) While attached to a particular DAR, the MN can send/receive traffic using the address from that DAR Every time the MN moves, it obtains a new address The MN can preserve the reachability of IPv6 addresses obtained at previous DARs, by sending a BU to the DARs How this dynamic decision is taken is out-of-scope of the draft (for example, it can be done on an application-basis) DARs play the role of the HA for those addresses that the MN want to keep reachability, and only for the period of time decided by the MN MNs simultaneously handle several IPv6 addresses Each of them anchored at a different DAR 80th IETF, Prague draft-bernardos-mext-dmm-cmip-00 MEXT WG, 2011-04-01

FAMA. Basic principles (III) 80th IETF, Prague draft-bernardos-mext-dmm-cmip-00 MEXT WG, 2011-04-01

FAMA. MBIP BU auth with CGAs With a DMM approach like FAMA, many IPsec SAs would be required to follow RFC4877 security We adopt the use of CGAs to provide authentication between the DAR and the MNs As introduced in draft-laganier-mext-cga 80th IETF, Prague draft-bernardos-mext-dmm-cmip-00 MEXT WG, 2011-04-01

BU + CGA param + signature (subsequent signaling) FAMA. Signaling MN DAR CGA config BU + CGA param + signature MN auth PHKT caching BA + PHKT (first handoff) MN DAR PHKT refresh, next handoffs, de-reg BU(PHKT auth) MN auth BA (subsequent signaling) 80th IETF, Prague draft-bernardos-mext-dmm-cmip-00 MEXT WG, 2011-04-01