[e2e] Revisiting RON ("traffic engineering considered harmful"
touch at ISI.EDU
Sat Oct 20 10:47:16 PDT 2001
David P. Reed wrote:
> IMHO, we wouldn't need "overlay networks" if we could get over the idea
> that IP by definition implies BGP or some other "universal solvent for
It depends on what the overlay is for; I believe overlays are still
useful, even if the underlying routing is OK, for experiments, testbeds,
teaching labs, and especially to connect sets applications.
The latter case is a network-layer version of peer networks, which
avoids recapitulating the network layer inside the application.
FWIW, we have an overlay project as well, the X-Bone, with further
information at http://www.isi.edu/xbone , available in
/usr/ports/net/xbone on FreeBSD and as a Linux RPM from our website.
The X-Bone focuses on how to do an overlay using existing IP, IPsec,
etc. protocols (we're working on a draft for the upcoming IETF on this).
(PS - we're especially interested in helping it be used for teaching
labs as well)
> It would be much more interesting to focus less on "global optimality"
> (of the sort that BGP strives for) and more on heterogeneous routing
> approaches co-existing.
See X-Bone :-) We support using existing routing protocols on the overlay.
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