How can I subnetting my network ?

[Mike Maltese]

<snip>
>    I want to build a network as shown below.
> All devices is in my responsibity except the
> upsteam router. My question is 
> 
>    If I will assign public IP address to all 
>    interfaces, is it neccessary that I must
>    inform the upstream router's administrator 
>    to add my subnet in routing table of upstream
>    router ?
<snip>

Have a look here:

http://ezine.daemonnews.org/200211/ipfilter-bridge.html