Re: BGP & multihoming posted 11/11/2002
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.
Hamele Kassa wrote:
> 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.
> ----- Original Message -----
> From: "Brian T. Albert" <brian.albert@xxxxxxxxxxxxxxxx>
> To: "MADMAN" <dave@xxxxxxxxxxxxxx>
> Cc: <ccielab@xxxxxxxxxxxxxx>
> Sent: Sunday, November 10, 2002 10:51 AM
> Subject: RE: BGP & multihoming
> > When you say "your own registered address/es", do you mean prefixes
> > to you from your 2 providers or obtained from another authority? What
> > authority can assign you prefixes independent of you providers, and what
> > the requirements to obtain them?
> > BA
> > -----Original Message-----
> > From: MADMAN [mailto:dave@xxxxxxxxxxxxxx]
> > Sent: Saturday, November 09, 2002 9:12 PM
> > To: Brian T. Albert
> > Cc: ccielab@xxxxxxxxxxxxxx
> > Subject: Re: BGP & multihoming
> > You don't need NAT if you have your own registered address/es. No
> > 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@xxxxxxxxxxxxxxxx
> > --
> > David Madland
> > CCIE# 2016
> > Sr. Network Engineer
> > Qwest Communications Inc.
> > 612-664-3367
> > dave@xxxxxxxxxxxxxx
Sr. Network Engineer
"You don't make the poor richer by making the rich poorer." --Winston