[c-nsp] IP unnumbered question. Are isp's using this alot?

[Leonardo Souza]

Hi, from the side the ISP, usually do they config the unnumbered interface
toward the customer with the loopback of the router?

regards,
Leonardo


> --- Ursprüngliche Nachricht ---
> Von: David Barak <thegameiam at yahoo.com>
> An: Joseph Jackson <JJackson at nos.com>, cisco-nsp at puck.nether.net
> Betreff: Re: [c-nsp] IP unnumbered question. Are isp's using this alot?
> Datum: Thu, 23 Jun 2005 01:42:50 -0700 (PDT)
> 
> 
> 
> --- Joseph Jackson <JJackson at nos.com> wrote:
> 
> > Hi all,
> > 
> >  
> > 
> >  
> > 
> >             My company just got a new t1 line from a
> > different isp than our
> > main one for backup incase the primary fails.  When
> > they gave me the ip
> > address info I noticed that there wasn't anything
> > listed for the wan side of
> > the router.  When I called to ask about this they
> > informed me that on their
> > edge devices they do not give ip addresses and I
> > must use the ip unnumbered
> > command.  What I am getting at here is is this
> > common for ISP's to do now?
> > Is this a trend that has been gaining ground?  When
> > I spoke to my boss about
> > this he wasn't too happy.  The other circuits that
> > we have for internet
> > access all came with an ip to use for the wan
> > interface. Even a circuit from
> > the same company that we use for a whole other
> > network has a wan ip address.
> > Anyone else see this a lot?
> > 
> 
> This is the classic UUNet standard config for the past
> 10 years or so (note: I don't know which ISP you're
> using, and don't work for UU): if a customer is
> singly-homed, then pinging their Ethernet interface is
> just as good as pinging a numbered serial.  
> 
> If UU were to go to all numbered /30s, they'd probably
> chew up several /16s immediately (they have a LOT of
> unnumbered customers).  Personally, I'm glad they're
> not doing that...
> 
> -David
> 
> 
> David Barak
> Need Geek Rock?  Try The Franchise: 
> http://www.listentothefranchise.com
> 
> 
> 		
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