Subject: [rrg] BRDP & Host knowledge of local routing prefixes

From: RJ Atkinson <[email-masked]>
Date: Tue, 09 Dec 2008 09:33:12 -0500

From draft-meyer-loc-id-implications-00.txt, as posted
to the IRTF Routing RG list, in Section 6, near the
top of page 6:
> This asymmetry gives rise to the following problem:

> Hosts will likely want information, at some granularity,

> about which <source,destination> pairs currently work.

> However, the host has no information about how many RGs

> are available to the site or if they are currently reachable.
> So the host can not test the set of <source,destination>

> pairs for active paths.

I agree this is a prospective issue in many proposals,
and also even in (parts of) the deployed Internet.
MANET deployments are particularly likely to run into
this issue, but it can also arise in other contexts.

Where "to the site" above means "to the local site",
I think Teco Boot's BRDP work would be one reasonable
approach to this concern.

BRDP is nicely generic in its approach.  While BRDP
is suitable for use with many (all ?) concepts being
discussed within Routing RG, BRDP also seems quite
suitable for MANETs, mobile networks, and other sorts
of IP mobility.

Cheers,

Ran
[email-masked]

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