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Scalable Multihoming across IPv6 Local-Address Routing Zones Global-Prefix/Local-Address Stateless Address Mapping (SAM)

Document Type Expired Internet-Draft (individual)
Expired & archived
Author Rémi Després
Last updated 2009-07-13
Replaces draft-despres-sam-scenarios
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


The continuous growth of routing tables in the core of Internet is a challenge. It would become overwhelming if each multihomed customer site would need a provider independent prefix to take full advantage of its multihoming. IPv6 has the potential to solve this problem, but a complete specification is still missing. This draft proposes an approach for a solution. The Stateless Address Mapping (SAM) model, introduced for this, is applicable to a hierarchy of routing zones with multihoming permitted at each level, and with each zone using local addresses for its internal routing plan. End-to-end transparency of the Internet is maintains across these local-address zones, thanks to a systematic encapsulation of global-address packets into local-address packets. Local addresses are statelessly derived from prefixes found in global addresses, and from static parameters of traversed zones. Global prefixes delegated by a zone to its child interfaces can be obtained by autoconfiguration, thanks to to a bidirectional correspondence between SAM local addresses and SAM global prefixes. Deployment can be incremental.


Rémi Després

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