Re: [sidr] RIB Size Estimation for BGPSEC

"t.petch" <ietfc@btconnect.com> Tue, 31 May 2011 17:43 UTC

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From: "t.petch" <ietfc@btconnect.com>
To: "Sriram, Kotikalapudi" <kotikalapudi.sriram@nist.gov>, sidr@ietf.org
References: <00fb01cc1c86$20345e00$4001a8c0@gateway.2wire.net> <D7A0423E5E193F40BE6E94126930C49308788046D8@MBCLUSTER.xchange.nist.gov>
Date: Tue, 31 May 2011 18:41:34 +0200
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Subject: Re: [sidr] RIB Size Estimation for BGPSEC
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----- Original Message -----
From: "Sriram, Kotikalapudi" <kotikalapudi.sriram@nist.gov>
To: "t.petch" <ietfc@btconnect.com>; <sidr@ietf.org>
Sent: Friday, May 27, 2011 7:58 PM

> Tom,
>
> Thanks for your comment.
> We have preliminary results that extend the RIB estimation (with BGPSEC) to
> LISP (or, similar map-and-encap type of protocols).
> That is, the scenario when LISP and BGPSEC are both in use.
> I thought of sharing only the BGPSEC RIB modeling results for now.
> Needless to say, in the scenario as you mention,
> "outer routing headers for delivery to location, and inner routing headers for
> delivery to the identified host", the RIB estimates for BGPSEC
> would be much smaller for core PE routers or RRs.
>
> Any thoughts on what a realistic timeline might be for adoption of
> LISP or ILNP (or any solution) for FIB scalability?
> (Well, I hear you say - by the time the FIB size exceeds ~1M.)

Ah, you are much more ahead of the game than I realised:-)

I don't have any good data on LISP (or ILNP) except that I
expect that eventually LISP will sweep all before it.  It's a bit
like IPv6; we are out of IPv4 addresses so IPv6 is a must
so why can't I get an IPv6 service from any ISP whatsoever?  So
we run out of FIB space and noone does anything? seems
likely:-(.  Pick a figure from the air - 2020?

Tom Petch

> Sriram
>
> > -----Original Message-----
> > From: sidr-bounces@ietf.org [mailto:sidr-bounces@ietf.org] On Behalf Of
t.petch
> > Sent: Friday, May 27, 2011 11:53 AM
> > To: sidr@ietf.org
> > Subject: [sidr] RIB Size Estimation for BGPSEC
> >
> > Try again ...
> > and again ...
> >
> >  RRG, before looking for some architectures that would solve the world's
routing
> >  problems, did discuss the expected capacity of DFZ routers,  given the
expected
> >  rate of growth of technology, so as to work out how long the IETF has got
to
> >  come up with something new.
> >
> >  The consensus was that routers could not be expected to support more than
1M
> >  entries in the RIB which is somewhat less than the 2.7M you expect in 2025.
> > And
> >  the new architecture could make the world look very different by then, with
> >  outer routing headers for delivery to location, and inner routing headers
for
> >  delivery to the identified host.
> >
> >  Tom Petch
> >
> > > ----- Original Message -----
> > > From: "Sriram, Kotikalapudi" <kotikalapudi.sriram@nist.gov>
> > > To: "sidr wg list" <sidr@ietf.org>
> > > Sent: Tuesday, May 24, 2011 2:28 PM
> > > Subject: [sidr] RIB Size Estimation for BGPSEC
> > >
> > >
> > > In response to a request during Q&A at the SIDR WG meeting, April 1, in
> > Prague,
> > > I am posting the results of modeling and estimation of the RIB size for
> > BGPSEC.
> > > (I plan to present this work at the SIDR WG meeting in Quebec.)
> > >
> > > Here is the link for the slides:
> > >
> > > http://www.antd.nist.gov/~ksriram/BGPSEC_RIB_Estimation.pdf
> > > { file:///D:/Articles/BGPSEC_RIB_Estimation.pdf }
>
> -- snip ---

[sidr] RIB Size Estimation for BGPSEC Sriram, Kotikalapudi
Re: [sidr] RIB Size Estimation for BGPSEC t.petch
[sidr] RIB Size Estimation for BGPSEC t.petch
Re: [sidr] RIB Size Estimation for BGPSEC Sriram, Kotikalapudi
Re: [sidr] RIB Size Estimation for BGPSEC Tony Li
Re: [sidr] RIB Size Estimation for BGPSEC Sriram, Kotikalapudi
Re: [sidr] RIB Size Estimation for BGPSEC Tony Li
Re: [sidr] RIB Size Estimation for BGPSEC Randy Bush
Re: [sidr] RIB Size Estimation for BGPSEC Christopher Morrow
Re: [sidr] RIB Size Estimation for BGPSEC t.petch
Re: [sidr] RIB Size Estimation for BGPSEC Randy Bush
Re: [sidr] RIB Size Estimation for BGPSEC John Scudder
Re: [sidr] RIB Size Estimation for BGPSEC Christopher Morrow
Re: [sidr] RIB Size Estimation for BGPSEC t.petch