Saad -- Scope Addressing Architecture Discussion
About Saad	English (USA)
Scoped Addressing Architecture Discussion (SAAD) Mailing list moderator: Eric Rescorla, Internet Architecture Board Mailing list description: We have specified an Internet that works, at the network layer, using relatively stable but not permanent identifiers for connection endpoints, which are allocated and administered using a topology dependent model, implying a service provider dependent model. But we run into problems (the architecture doesn't quite fit) when we try to address some scenarios encountered in real life: . multihoming . assembling a local network without necessarily having to contact an ISP to obtain address space(e.g.,home net) . renumbering local networks without significant pain . working with wireless networks, where the concept of "link" can be quite fuzzy Some proposed solutions are challenged in terms of: . providing referential integrity - how is referential integrity maintained when identifiers are not globally unique or are overloaded? . choosing between different identifiers for an object which has different "reachability" and the reachability is context-dependent . security/transiting trust in layered address resolution . providing solutions that work across all layers of the stack and all areas - how do we find a solution that is great for routing but also great for security? The purpose of this mailing list is to identify and clarify the types of problems we are encountering with the current architecture, and to debate the merits of approaches that: . provide scoping at the IP layer . provide scoping at some other (single) layer . provide new addressing paradigms that span several layers Out of scope for this discussion list are: . discussions of specific proposed "solutions" (except as illustrations for discussing problem types, and merits of general approaches) To see the collection of prior postings to the list, visit the Saad Archives.
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