Date: Mon, 12 Feb 2001 09:03:44 -0800 (PST) From: kiguchi@excite.com To: Julian Elischer <julian@elischer.org> Cc: freebsd-hackers@freebsd.org Subject: Re: ADSL and PPPoE question Message-ID: <20768358.981997424567.JavaMail.imail@seamore.excite.com>
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On Mon, 12 Feb 2001 08:20:55 -0800, Julian Elischer wrote:
> kiguchi@excite.com wrote:
> >
> > I'm very sorry if this is a stupid question.
> >
> > In our company, we want to set up a small network of about 20 PCs.
ADSL
> > seems like a good inexpensive solution, and I understand that FreeBSD
with
> > Netgraph can act like a gateway for our computers.
>
> are they in different places?
No - the same place.
> Negraph/ppp can act as a gateway for pppoe connections but I am not sure
> how that helps you. How do you get the ADSL sessions to terminate on
> an ethernet in your office?
> (does your ISP provide that service?)
>
> >
> > What I don't understand is whether we will have to use IP aliasing
(NAT) or
> > we can have our own routable IP range.
>
> That very much depends on what you think the topology looks like.?
I thought something like this:
[ISP]
|
|
-----------------
Office [ADSL]
|
|
[FreeBSD Box]
| | | |
| | | |
[A][B][C][D]
where A, B, C, D all have their own routable IPs. So according to what you
said, FreeBSD would need to establish a separate PPPoE session for each of
the computers A, B, C and D, provided the ISP supports multiple PPPoE
sessions over the single ADSL line?
I need to know if this configuration is possible, so I will know what to ask
the ISP sales and support people. So far they haven't been very helpful.
Thank you very much for your reply
Takashi
> > Since ADSL is a Point-to-point link
> > over Ethernet, does the protocol / one ADSL line support more than one
IP,
> > or will everything have to be aliased?
>
> the single ADSL line CAN support several PPPoE sessions,
> and each PPPoE can support one ppp session
> and each PPP session can support multiple IP sessions, but only
> one set of endpoints.
>
> To understand whether this helps you we need to know a
> little more about what you want to do.
>
> >
> > Thank you
> >
> > Takashi Kiguchi
> >
> --
> __--_|\ Julian Elischer
> / \ julian@elischer.org
> ( OZ ) World tour 2000-2001
> ---> X_.---._/
> v
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