Another advantage of IP unumbered, is if you have say 250 T1 customers
hanging off a router, and you default router them out there serial
interface:
ip route 0.0.0.0 0.0.0.0 s0
then, if you ever want to move customers to another router, you don't have
to have access to there router to do anything, nd don't have to go
renumbering any interfaces either.
Brian
On Sun, 2 Sep 2001, Lupi, Guy wrote:
> Sure, IP unnumbered is frequently used by ISP's to save address space and
> for ease of configuration. Lets say you have a 7513 with 280 T1 customers
> on it, that would mean wasting 280 /30 IP blocks just on interface transit,
> so why use those IP's if you don't have a specific reason to? That is one
> of the bigger applications. You can also use it if you have only one IP
> address routed to you and you want to use it for NAT. You can use IP
> unnumbered on the serial, assign the ethernet a private IP, use the public
> for the NAT pool and map port 23 on the public IP address to port 23 on the
> private ethernet IP for telnet access. Hope this is what you were looking
> for.
>
> Guy
>
> -----Original Message-----
> From: sami natour
> To: [EMAIL PROTECTED]
> Sent: 9/2/01 4:33 PM
> Subject: IP unnumbered [7:18250]
>
> Hello everybody,
> I know how to cinfigure IP unumbered but I do not know
> any practical scenario that I make use of this
> feature.Any body has specific scanrios where I can
> use ip unnumbered .
>
> Regards ,
> sami
>
>
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