[rr-fs] names vs. addresses

[Joel M. Halpern]

I think that there are two different ideas being mixed here, both relating 
to the notion that entities have names independent of their topological 
location.
You describe below research on approaches to routing based on topologically 
insensitive names.
While that is interesting, most folks looking at that problem tend instead 
to look at as a matter of layering.  That is, on one level the 
communication is in terms of topologically insensitive names (identities), 
and at another layer communication is in terms of toplogically sensitive 
names (addresses).
Admittedly, this is based on the historically grounded assumption that 
routing on the basis of topologically sensitive names is more 
effective.  But that does still seem to be a reasonable assumption.
some of this is explored in the output of the Name Space Resrach Group.

Yours,
Joel

At 08:43 PM 10/7/2005, Dmitri Krioukov wrote:
>several people, including vint cerf at the last sigcomm,
>talk about differentiating between node names (or IDs)
>and node addresses having some topological sense. i'd
>like to emphasize that, at least formally, this distinction
>is very well understood, formalized, and researched. it
>is directly related to what's called name-independent
>routing (working with node "names") vs. name-dependent
>routing (working with node "addresses").
>
>indeed, by definition (http://arxiv.org/abs/cs.NI/0508021),
>name-dependent routing embeds some topological information
>in node labels which thus cannot be arbitrary, while routing
>that can work on the graphs with arbitrary node labels is
>called name-independent. thus, networking terms like "node
>name" or "node ID" essentially refers to the name-independent
>case, while the term "node address" usually implies a
>topologically informative node label, i.e., the name-dependent
>case.
>
>even finer classification is considered in http://arxiv.org/abs/cs.DC/9903009
>which differentiates the name-dependent case into the two
>subcases: node label set is 1...n (case \beta) or completely
>arbitrary (case \gamma).
>--
>dima.
>http://www.caida.org/~dima/
>
>
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