[86223] in North American Network Operators' Group
Re: Scalability issues in the Internet routing system
daemon@ATHENA.MIT.EDU (sthaug@nethelp.no)
Thu Oct 27 05:55:31 2005
Date: Thu, 27 Oct 2005 11:55:02 +0200 (CEST)
To: elmi@4ever.de
Cc: nanog@nanog.org
From: sthaug@nethelp.no
In-Reply-To: <20051027075621.GN93623@new.detebe.org>
Errors-To: owner-nanog@merit.edu
> > I'd have to say that RFC 3513 is out of touch with reality here, yes.
> > As far as I know current routers with hardware based forwarding look
> > at the full 128 bits - certainly our Juniper routers do.
>
> Ours do as well, but essentially, that's because they are internal to
> our network. Nobody would need that in the shared DFZ part, there I
> agree with Rubens.
I agree about that part too.
> So although you would need the longer prefixes (right up to /128) in
> your routing core, you would not necessarily have to have them in
> your edge routers (as long as they don't directly connect to your
> core, like Cisco keeps telling us we should do).
That's just it - even if you don't need to exchange longer than /64
prefixes with other providers, your routers still need to handle the
longer prefixes in hardware (assuming you're using boxes with hardware
based forwarding).
Steinar Haug, Nethelp consulting, sthaug@nethelp.no
