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Date:      Wed, 23 Jan 2002 21:18:28 -0800 (PST)
From:      Julian Elischer <julian@elischer.org>
To:        Tony Williams <twilliams_62@hotmail.com>
Cc:        freebsd-net@freebsd.org
Subject:   Re: Question on PPPoE
Message-ID:  <Pine.BSF.4.21.0201232117270.25428-100000@InterJet.elischer.org>
In-Reply-To: <F227tI7GZ8gJog7FpqV0000fe59@hotmail.com>

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You can have several PPPOE sessions active to the same end router, each
being forwarded o a different ISP.
(similar to VPNs)




On Thu, 24 Jan 2002, Tony Williams wrote:

> 
> Hi,
> 
> I have a question regarding PPPoE protocol and code. I recently
> changed from dial up to a PPPoE service through a DSL provider
> and was successful in setting the FreeBSD 4.2 box up!
> 
> Out of curiousity, I went through some of the code in netgraph and
> the rfc specification, but unable to follow the necessity for the
> Session ID. the protocol says the peer mac address and the session
> id determines a unique session. From one peer, one can have only one
> internet connection and mac addresses are unique. Why then the session
> id also included in the protocol. What is the advantage of having
> session id, it is not there in normal dial up PPP and who uses it?
> 
> In my case, the ISP did not mention anything about the session id
> and I have only one session from the PC, i assume
> 
> Thanks
> -Tony
> 
> 
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