From: Peter van Oene (pvo@usermail.com)
Date: Mon Nov 11 2002 - 14:27:27 GMT-3
I expect HK was referring to ARIN's assignment policy for IPv4 which I
believe currently limits assignments to /20 or shorter.
Most providers that I am aware of will accept most anything if you are
paying transit. Naturually they'll only announce /24's and greater
beyond their AS, but I have seen many of them accept /28 and longer so
long as the client was forking over a good amount of green :-)
In these cases, I often feel that people overlook the benefits of
multihoming to one large provider so long as the connections are into
different POPs. To me, there is less hassle here, and likely robust
enough service. Not to mention you contribute to the greater good by
not spewing out your micro prefixes around the globe.
Pete
On Mon, 2002-11-11 at 15:22, MADMAN wrote:
> I keep seeing people refer to this /19 as the smallest aggregate that
> will be accepted by a provider though I have yet to meet this provider.
> I have set up several customers with dual home full routes and they
> announce a single /24 network or maybe a couple but very few have /19 or
> better. The providers I have worked with that accepted the /24 include
> Qwest, MCI, Sprint, Onvoy, and AT&T come to mind.
>
> Dave
>
> Hamele Kassa wrote:
> >
> > Brian,
> >
> > You do not need to secure your own registered address/es(your network has to
> > be bigger than /19 space to qualify). The IP address/es assigned to you
> > from your providers (/24 or shorter address space) will work for you as
> > long as you are running BGP(no longer prefix than /24). However you need to
> > secure and AS from ARIN(if you are multihomed you will qualify).
> >
> > I hope this helps.
> >
> > HK
> >
> > ----- Original Message -----
> > From: "Brian T. Albert" <brian.albert@worldnet.att.net>
> > To: "MADMAN" <dave@interprise.com>
> > Cc: <ccielab@groupstudy.com>
> > Sent: Sunday, November 10, 2002 10:51 AM
> > Subject: RE: BGP & multihoming
> >
> > > When you say "your own registered address/es", do you mean prefixes
> > assigned
> > > to you from your 2 providers or obtained from another authority? What
> > other
> > > authority can assign you prefixes independent of you providers, and what
> > are
> > > the requirements to obtain them?
> > >
> > > BA
> > >
> > > -----Original Message-----
> > > From: MADMAN [mailto:dave@interprise.com]
> > > Sent: Saturday, November 09, 2002 9:12 PM
> > > To: Brian T. Albert
> > > Cc: ccielab@groupstudy.com
> > > Subject: Re: BGP & multihoming
> > >
> > >
> > >
> > > You don't need NAT if you have your own registered address/es. No
> > special
> > > config required, you simply announce your public address/es
> > >
> > > Dave
> > >
> > > "Brian T. Albert" wrote:
> > >
> > > > In the real world can BGP multihoming to 2 different providers be
> > > > accomplished without NAT for the internal networks? I have found some
> > > links
> > > > on CCO http://www.cisco.com/warp/public/459/BGP-PIX.htm that show how to
> > > do
> > > > it with NAT, but is it possible without. If so, can someone supply some
> > > > config examples or good links.
> > > >
> > > > Thanks
> > > >
> > > > Brian T. Albert
> > > > brian.albert@worldnet.att.net
> > >
> > > --
> > > David Madland
> > > CCIE# 2016
> > > Sr. Network Engineer
> > > Qwest Communications Inc.
> > > 612-664-3367
> > > dave@interprise.com
> > >
>
> --
> David Madland
> CCIE# 2016
> Sr. Network Engineer
> Qwest Communications
> 612-664-3367
>
> "You don't make the poor richer by making the rich poorer." --Winston
> Churchill
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