Re: [WG-BB] Study Report: CATV assignment guidline

[Hiroyuki ASHIDA <ashida@cablenet.co.jp>]

>  Then, a /23 per downstream port of 30Mbps means that 25% to 30% of
> home passes will be allocated in bootstrap. I think the penetration
> rate of the whole CATV market (not CATV Internet) is about 25% to
> 30% in Japan.

Yes, I think so. 

> This means that IP addresses will be allocated to 100% of CATV users
> in the bootstrap stage.  Although this may happen in some areas,

Operators do not necessarily construct their CMTS in consideration of
100% rate of two-way home pass. CMTS is prepared to the subscription
of CATV internet service to the last.

 Example: ( this is simplified )
   The CATV operator has 30,000 two-way home pass. 
   They assume the rate of subscription to be 10%. 
   => CMTS which can connect 3,000 terminals is prepared. 

Probably, there are few ports which operator prepares rather than you
think.

Regards, 
-- ashida
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