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

[MAEMURA Akinori <maem@maem.org>]

| Maemura-san,
| 
| Thank you for your contribution!
| 
Sorry to be this late.


| At 13:34 02/02/04, MAEMURA Akinori wrote:
| >Colleages,
| >
| >WG-BB report was presented in the last Policy SIG in Taiwan.
| >We JPNIC IPwg reported it in JPNIC Open Policy Meeting but
| >there some SIers and CATV operators presented their opinion
| >around default bootstrap assignment size.
| >
| >JPNIC IPwg had a meeting with concerned people and studied
| >this issue.  The Following is the study report.
| >
| >As I asked Arano-san with a hat of chair of Policy SIG, I'd
| >like to present something based on this discussion, after 
| >discussing in this wg-bb.
| 
| Generally, it is OK. However, it should depend on discussion 
| which will happen in this ML.
| 
Sure. I'd like to have all your comments and idea as far as
I can.


| >Summary:
| >------------------------------------------------------------
| >   a)    Default assignment size should be considered upon
| >                 "number of downstream port" and 
| >                 "capacity specification" by the hardware,
| >         instead of simply number of CMTS.
| 
| Could you give us more concrete conditions and 
| number (/24, /23 or whatever)?
| 
| >   b)    In case of one 30Mbps type cable, /24 will typically
| >         last three months.  Considering it can connect 2,000
| >         users for example, it is never harmful if default 
| >         size for this is /23 which lasts six months.
| >------------------------------------------------------------
| 
| Do you mean one 30Mbps type cable is automatically given /23? 
| I can't  see any condition about "number of downstream ports"....
| 
You're right, I mean here that /23 per one 30Mbps type 
downstream cable will make sense.

In case of 10Mbps type cable /24 will make sense while it 
isn't propotional
 

I meant a certain sized block per CMTS won't make sense but
per downstream cable will do.  Moreover, capacity differs
by its specification 


Regards,
--
MAEMURA Akinori
maem@maem.org
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