nanog mailing list archives

Re: 16-bit ASN kludge


From: Owen DeLong <owen () delong com>
Date: Sat, 04 Dec 2004 00:47:55 -0800

I think the general idea of dividing ASNs into LEAF and TRANSIT categories
is a good one.  A method of determining which ASs need to know about
a given LEAF AS is needed, and, I think a lot of optimizations may well
be possible.

Like I said, I think it requires some additional thought and refinement,
but, I like the general idea.

Owen


--On Saturday, December 4, 2004 3:03 AM +0000 "Edward B. Dreger" <eddy+public+spam () noc everquick net> wrote:

OD> Date: Fri, 03 Dec 2004 18:09:48 -0800
OD> From: Owen DeLong

OD> I think all the meaningful parties have already pretty much agreed on
OD> 32bit ASNs in BGP4.  I think that will be coded in the routers well
before OD> any attribute-based thing for 32bit ASNs is.  As such, I don't
see much OD> point to kludging this instead of just going for it assuming
a 32bit world.

Then belay my 16-bit ramblings.  I'm probably a bit naive in thinking a
new attribute would be passed along by enough transits to be useful; an
"adopt this incompatible protocol or become an island" approach may well
be needed.

I still have to wonder if some leaf optimizations are possible.  Perhaps
an incompatible protocol would leave more implementation wiggle room.


Eddy
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