Re: [RRG] Providers and providers

[Eliot Lear <lear@cisco.com>]

Iljitsch van Beijnum wrote:
> On 20 aug 2008, at 15:58, Eliot Lear wrote:
>
> > > The trouble start when they don't act as an ISP and have each office 
> > > connect to the internet independently - but they still want portable 
> > > address space. In that case, we end up with 250k prefixes in the 
> > > routing table.
>
> How does that make a difference?
>
> If you get a single prefix but connect to the internet in 500 
> locations, you need to deaggregate that prefix into 500 globally 
> visible more specifics. This result is largely the same as the 
> situation where you don't get that single prefix in the first place, 
> but 500 individual ones.

You said 250k, which is what got me.  500, yes.

Eliot


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