[184438] in North American Network Operators' Group
Re: AW: /27 the new /24
daemon@ATHENA.MIT.EDU (Baldur Norddahl)
Sat Oct 3 06:42:05 2015
X-Original-To: nanog@nanog.org
In-Reply-To: <B61F247C-9A84-4B22-A42B-B9B818538F71@720.fr>
Date: Sat, 3 Oct 2015 12:42:01 +0200
From: Baldur Norddahl <baldur.norddahl@gmail.com>
To: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
2 million routes will not be enough if we go full /27. This is not a
scalable solution. Something else is needed to provide multihoming for
small networks (LISP?).
Regards,
Baldur
On 3 October 2015 at 11:03, Youssef Bengelloun-Zahr <youssef@720.fr> wrote:
> Hi,
>
> FYI, newer linecard models from BROCADE can hold 2 million routes.
> Probably others can do that now too.
>
> Disclaimer : I'm not working for them or defending them, just setting an
> information straight.
>
> My 2 cents.
>
>
>
> > Le 3 oct. 2015 =C3=A0 10:33, J=C3=BCrgen Jaritsch <jj@anexia.at> a =C3=
=A9crit :
> >
> > As mentioned before: even the new SUP2T from Cisco is limited to 1Mio
> routes ...
> >
> > There are MANY other vendors with the same limitations: Juniper,
> Brocade, etc
> >
> > And the solt equipment is not the 99USD trash from the super market at
> the corner ...
> >
> >
> > J=C3=BCrgen Jaritsch
> > Head of Network & Infrastructure
> >
> > ANEXIA Internetdienstleistungs GmbH
> >
> > Telefon: +43-5-0556-300
> > Telefax: +43-5-0556-500
> >
> > E-Mail: jj@anexia.at
> > Web: http://www.anexia.at
> >
> > Anschrift Hauptsitz Klagenfurt: Feldkirchnerstra=C3=9Fe 140, 9020 Klage=
nfurt
> > Gesch=C3=A4ftsf=C3=BChrer: Alexander Windbichler
> > Firmenbuch: FN 289918a | Gerichtsstand: Klagenfurt | UID-Nummer: AT
> U63216601
> >
> >
> > -----Original Message-----
> > From: Max Tulyev [maxtul@netassist.ua]
> > Received: Samstag, 03 Okt. 2015, 9:11
> > To: nanog@nanog.org [nanog@nanog.org]
> > Subject: Re: AW: /27 the new /24
> >
> > Which routers? DIR-300 with OpenWRT/Quagga? :)
> >
> > I think all above-the-trash level routers supports >1M routes, isn't it=
?
> >
> >> On 02.10.15 17:45, J=C3=BCrgen Jaritsch wrote:
> >> Hi,
> >>
> >> this would at least help to get rid of many old routing engines around
> the world :) ... or people would keep their "learn nothing smaller than
> /24" filters in place. Also an option - but not for companies who act as =
an
> IP transit provider.
> >>
> >>
> >> best regards
> >>
> >> J=C3=BCrgen Jaritsch
> >> Head of Network & Infrastructure
> >>
> >> ANEXIA Internetdienstleistungs GmbH
> >>
> >> Telefon: +43-5-0556-300
> >> Telefax: +43-5-0556-500
> >>
> >> E-Mail: JJaritsch@anexia-it.com
> >> Web: http://www.anexia-it.com
> >>
> >> Anschrift Hauptsitz Klagenfurt: Feldkirchnerstra=C3=9Fe 140, 9020 Klag=
enfurt
> >> Gesch=C3=A4ftsf=C3=BChrer: Alexander Windbichler
> >> Firmenbuch: FN 289918a | Gerichtsstand: Klagenfurt | UID-Nummer: AT
> U63216601
> >>
> >>
> >> -----Urspr=C3=BCngliche Nachricht-----
> >> Von: NANOG [mailto:nanog-bounces@nanog.org] Im Auftrag von Justin
> Wilson - MTIN
> >> Gesendet: Freitag, 02. Oktober 2015 16:32
> >> An: NANOG
> >> Betreff: /27 the new /24
> >>
> >> I was in a discussion the other day and several Tier2 providers were
> talking about the idea of adjusting their BGP filters to accept prefixes
> smaller than a /24. A few were saying they thought about going down to a=
s
> small as a /27. This was mainly due to more networks coming online and n=
ot
> having even a /24 of IPv4 space. The first argument is against this is t=
he
> potential bloat the global routing table could have. Many folks have
> worked hard for years to summarize and such. others were saying they woul=
d
> do a /26 or bigger.
> >>
> >> However, what do we do about the new networks which want to do BGP but
> only can get small allocations from someone (either a RIR or one of their
> upstreams)?
> >>
> >> Just throwing that out there. Seems like an interesting discussion.
> >>
> >>
> >> Justin Wilson
> >> j2sw@mtin.net
> >>
> >> ---
> >> http://www.mtin.net Owner/CEO
> >> xISP Solutions- Consulting =E2=80=93 Data Centers - Bandwidth
> >>
> >> http://www.midwest-ix.com COO/Chairman
> >> Internet Exchange - Peering - Distributed Fabric
> >
>
