On Sat, 3 Feb 2001, Haim Gelfenbeyn wrote:
> >
> >
> > Indeed, congratulations everybody.
> > This concludes all known Linux-Bezeq-ADSL as far as I know.
> > I wonder what the PPTP standard has to say about this GRE call type; my
> > guess is that the ATUR3 designers forgot something.
> >
>
> Hello,
> Actually, I think Orckit people are not to blame, and my fix solves genuine
> bug in pptp. "Call ID" is used in GRE encapsulation to distinguish between
> two separate virtual tunnels originating from the same IP. E.g.
> theoretically I can connect to two ISP at the same time with ADSL modem. Of
> course nobody does that, and I think ATUR2 modem simply ignored the "Call
> ID" field in GRE header. Now, ATUR3 is more picky about it (but it's not
> wrong, it simply follows the protocol better), and it silently drops packets
> with wrong Call ID. So I think Orckit people are not to blame here at all,
> and all we need to do is the following:
>
Ok. A correction is in place here. Acording to the rfc , the
Outgoing-Call-Request should be sent by the pns (i.e.the pc connected to
the adsl modem). and the Call id is set by the pns and unique to him.
The Call id in the Outgoing-Call-Reply is unique to the pac (the adsl
modem). it is actualy different than the previous one.
Both share the:
call Serial Number An identifier assigned by the PNS to this
session for the purpose of identifying
this
particular session in logged session
information. Unlike the Call ID, both the
PNS and PAC associate the same Call Serial
Number with a given session. The
combination
of IP address and call serial number
SHOULD
be unique.
the call serial number is set by the calling pc and not the adsl modem.
This means Orkit have to correct their implementation.
Dani
> 1. Contact PPTP author and ask him to merge in mulix' enhancements and my
> bugfix.
> 2. Make bezeq people aware of the fact that Linux in fact does work with
> pptp now (Right now they know that it does not, and propose the modem
> replacement themselves).
>
> I understand that mulix takes care of #1, and I will talk with Bezeq on
> Sunday anyway, so I can try to tell them that (I need to cancel my modem
> replacement :-))
>
> Haim Gelfenbeyn.
>
>
>
>
> =================================================================
> To unsubscribe, send mail to [EMAIL PROTECTED] with
> the word "unsubscribe" in the message body, e.g., run the command
> echo unsubscribe | mail [EMAIL PROTECTED]
>
>
=================================================================
To unsubscribe, send mail to [EMAIL PROTECTED] with
the word "unsubscribe" in the message body, e.g., run the command
echo unsubscribe | mail [EMAIL PROTECTED]
