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Re: exponential route prefix growth, was: Re: The Cidr Report

  • From: Jared Mauch
  • Date: Fri Sep 22 16:15:59 2000 
On Fri, Sep 22, 2000 at 03:44:50PM -0400, Vijay Gill wrote:
> 
> On Fri, 22 Sep 2000, Kai Schlichting wrote:
> 
> 
>  [ http://www.employees.org/~tbates/cidr.plot.html for a plot ]
> 
> > of engineering experience announcing 32 /24's out of their scattered
> > POPs in addition to their /19 aggregate because they can't get their
> > load balancing right without it or have never heard of the 'NO_EXPORT'
> > attribute (I could point fingers now)?
> 
> I suspect data from inside providers with aggressive filtering policies
> might prove to be interesting.
> 
> Some promising local providers were past the 150k mark a while ago for sum
> (internal + global bgp) routes and were growing superlinearly the entire
> time because of the ever increasing number of customers.

	I have in one location over 100k prefixes received from
one nice large international provider:

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
a.b.c.d         4   701 10776831  107250 13024503    0    0 1w4d       105250

	My primary concern is that the current growth is going to
outscale the medium sized providers as the one vendor that
the above output came from doesn't appear to be providing enough memory
in their equipment, or have enough memory options available.

	I am not predicting "the internet will end in 9 days, repent",
but it is some cause for concern in the next 6-12 months.

	What would be nice is if someone were to put together an 
auto-nagger similar to the "your dns server is lame" of the old days
messages.  Back when the network tables were about 40-45k, I would read
the output of "sh ip b" and send messages to people asking them to
aggregate, but those days are over... (at least for me..)

	- jared

-- 
Jared Mauch  | pgp key available via finger from [email protected]
clue++;      | http://puck.nether.net/~jared/  My statements are only mine.
END OF LINE  | Manger of IP networks built within my own home