Re: Newbie Question about addressing impacts

>> Ideally, in an Internet architecture that we don't have today, there 
>> would be N prefixes, one per ISP.  However, the host
>> portion of the locator would be a constant regardless of prefix.  The 
>> IGP need not know about the external prefixes, so there's
>> no issue there.
>
> Good point.
>
> But this implies modifying IGPs, right?
>


Not seriously.  You would be modifying them to carry around a constant 
local portion of the address and ignore the "global"
prefix.  Simply picking a single constant prefix for use internally 
would suffice.

Tony