"2M today, 10M with no change in technology"? An informal survey.

Steven M. Bellovin smb at cs.columbia.edu
Sun Aug 26 01:03:50 UTC 2007

On Sat, 25 Aug 2007 20:44:45 -0400
"William Herrin" <herrin-nanog at dirtside.com> wrote:

> On 8/25/07, David Conrad <david.conrad at icann.org> wrote:
> > In another mailing list, someone has asserted that "noone believes
> > router vendors who say [they can support 2M routes today and 10M
> > with no change in technology]".
> > Do you believe router vendors who state they today have "capacities
> > on the order of 2 million ipv4 routes and they have no reason to
> > expect that they couldn't deliver 10 million route FIB products in a
> > few years given sufficient demand."?
> David,
> NNTP is similar to BGP in that every message must spread to every
> node. Usenet scaled up beyond what anyone thought it could. Sort of.
> Its not exactly fast and enough messages are lost that someone had to
> go invent "par2".
Netnews was originally designed for 300 bps dial-up modems with O(1)
hubs.  Fortunately, the technology evolved to meet the load.  Will BGP
evolve that way?  Netnews didn't demand anything more in common than a
file format, and the only major change in it was within 2-3 years after
it was invented.  BGP doesn't have that property.

		--Steve Bellovin, http://www.cs.columbia.edu/~smb

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