OMB: IPv6 by June 2008

Fri Jul 8 08:59:08 UTC 2005

You do not need to - any router have only `1 - 10% of all routing table
active, and it is always possible to optimize these alghoritms.

On the other hand - what's wrong with 4Gb on line card in big core router?
It's cheap enough, even today. And we have not 1,000,000 routes yet.

----- Original Message ----- 
From: "Brad Knowles" <brad at stop.mail-abuse.org>
To: "NANOG" <nanog at merit.edu>
Sent: Friday, July 08, 2005 1:03 AM
Subject: Re: OMB: IPv6 by June 2008

>
> At 12:51 AM -0700 2005-07-08, Alexei Roudnev wrote:
>
> >  Who need this complexity?  What's wrong with old good _routing rotocol_
> >  approach? Memory? (do not joke, today 4 Gb RAM is not a problem, when
it is
> >  for slow routing system). CPU (the same)? What else?
>
> Can you put 4GB on every linecard on every router you own?  Can
> you put a Power5 or PowerPC 970MP processor on every linecard on
> every router you own?  Does your vendor support you making any
> modifications/upgrades to any of their linecards, or do they require
> you to buy new ones with the go-faster features?
>
> And how many tens of thousands of dollars do each of those
> go-faster linecards cost?  And how many million-dollar fork-lift
> upgrades do you have to pay for in order to get the go-faster chassis
> in which to plug those go-faster cards into?
>
> Do you have thousands of routers?  Hundreds of thousands?
>
>
> I'm asking serious questions here.  I'm not a router guy, but
> I've heard a lot of comments on this list that give me pause, so I'd
> like to get real-world answers.
>
>
> Speaking from my own perspective, it seems to me that we've got a
> scalability problem here when we're expecting most devices to have a
> pretty complete picture of the entire world.  I think that's the real
> problem that has to be addressed.
>
> In terms of the routing protocols and number of ASes, we know
> that it's possible to build machines which can handle those kinds of
> things at those kinds of numbers.  The problem is that it's hard to
> do those kinds of things on a widespread basis (e.g., in every
> linecard in every router in the world), and most devices probably
> don't need that anyway.
>
> I don't know what the real solution is.  But it seems to me that
> we need to find something, and having people say "4GB of RAM?  No
> problem" is not the way to get this solved.
>
> -- 
> Brad Knowles, <brad at stop.mail-abuse.org>
>
> "Those who would give up essential Liberty, to purchase a little
> temporary Safety, deserve neither Liberty nor Safety."
>
>      -- Benjamin Franklin (1706-1790), reply of the Pennsylvania
>      Assembly to the Governor, November 11, 1755
>
>    SAGE member since 1995.  See <http://www.sage.org/> for more info.