> Not exactly
> PPP seems to be the protocol chosen for the link between the
> modem and the exchange. It is used, in this case, amongst other
> things to assign the IP address. Whether that IP address is
> static or dynamic depends only on what the RAN assigns (or is
> able to assign).
Why use PPP then? It would seem redundent over ATM unless you
needed the PAP login and password. Remember the marketing model is
one where you can expect to log into xtra for mail then switch to paradise
for gaming and maybe clear for the cheap weekend rate for international
traffic before logging into TVNZ for the movie. (read the blurb on the redback
site)
My understanding was that IP's wre assigned from the ISP's pool by
Telecoms RAN before the PPP authentication was passed through to the
ISP's RAN. This puts the cost of provisioning the IP's with the ISP and
allows each ISP to authenticate and meter their own traffic (or do you think
they rely on Telecom to tell them their traffic? I don't know!) with their
existing dialup hardware and software.
I'm guessing,,, I don't know the answer. Shane must if he's still with us?
> For example Dan still has the same ip address
> but mine and Stephen's keep changing (My feeling is that everyone
> else's keeps changing) Whether it is static or dynamic appears to
> be a limitation on the he RAN with multiple ISPs if I have been
> following correctly.
Mine has only changed once in the last month or more where I could not
understand the reason for the change. by the way.... Has anyone else had
problems with the M10 name not resloving properly on the inside after a
number change? Mine is resolving to the external number as well which
has surprised me... unfortunately it seems to get confused after a change
so I can't yet use DNS in my scripts.
> On the other hand (OTOH) billing I have been given to understand
> is based on a <quote>port</quote> on the RAN. That is it is tied
> to the circuit presumably at the ATM layer that runs from the
> modem to the Redback. Whether this is equivalent to vcc1 or is
> closer to a direct correspondence with you copper pair I am
> unclear on. The context was the question
> <quote>Can you get a second 300 Mb if you have a second login
> ID?</quote>
> The answer was no. (at that time)
> the reason give was that the traffic was measured at said port.
> The implication was that the traffic was measured below the ppp
> layer. The follow up question on what was actually billed
> elicited the response
> IP traffic not the ATM level which has up to 40% overhead or
> something to that effect.
Perhaps we have the answer between us... If the traffic measured is IP and
below PPP then the only thing to tie the traffic to the client is the match of
the PPP PAP info to the IP address. yes?
> I hope this may add something to the conversation
me too Harold
________________________________________
Harold Jarvie
Wellington
New Zealand
hjarvie@bigfoot.com
http://bigfoot.com/~hjarvie
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Received on Sat Jun 19 21:53:09 1999