Date: Mon, 29 Apr 2002 23:27:29 -0400 From: "ipver4" <ipver4@hotmail.com> To: <freebsd-net@FreeBSD.ORG> Subject: CCP does not work between Linux ppp client and FreeBSD ppp server Message-ID: <OE56o0nQZEMO6y4I5Jv00002a73@hotmail.com>
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(This is a PPP related question.)
It seems the RedHat Linux 7.2 PPP client does not work with the FreeBSD =
4.5 PPP server in the CCP (Compression Control Protocol) negotiation. =
Briefly, the problem looks like the following:
Linux ---> CCP conf request (with 3 compression schemes, A, B and C) --> =
PPP server
Linux <-- CCP conf reject (schemes, B and C) <-- PPP server
(That is, the PPP server picked the compression scheme A, and rejected =
the rest.)
Linux ---> CCP conf request (with 3 compression schemes, A, B and C) --> =
PPP server
Linux <-- CCP conf reject (schemes, B and C) <-- PPP server
(repeat may times without progress.)
It seems the Linux client did not follow the PPP protocol and ignored =
the CCP reject messages.
The correct message exchange should look like the following:
Linux ---> CCP conf request (with 3 compression schemes, A, B and C) --> =
PPP server
Linux <-- CCP conf reject (schemes, B and C) <-- PPP server
---> CCP conf request (scheme A) --> PPP server
<--- CCP conf ACK (scheme A) <-- PPP server
Comments?
P.S. I am using PPPoE for the testing.
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<DIV><FONT face=3DArial size=3D2>(This is a PPP related =
question.)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>It seems the RedHat Linux 7.2 PPP =
client does not=20
work with the FreeBSD 4.5 PPP server in the CCP (Compression =
Control=20
Protocol) negotiation. Briefly, the problem looks like the=20
following:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Linux ---> CCP conf request (with 3 =
compression=20
schemes, A, B and C) --> PPP server</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Linux <-- CCP conf reject (schemes, =
B and C)=20
<-- PPP server</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>(That is, the PPP server picked the =
compression=20
scheme A, and rejected the rest.)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>
<DIV><FONT face=3DArial size=3D2>Linux ---> CCP conf request (with 3 =
compression=20
schemes, A, B and C) --> PPP server</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Linux <-- CCP conf reject (schemes, =
B and C)=20
<-- PPP server</FONT></DIV>
<DIV>(repeat may times without progress.)</DIV>
<DIV> </DIV>
<DIV>It seems the Linux client did not follow the PPP protocol and =
ignored=20
the CCP reject messages.</DIV>
<DIV>The correct message exchange should look like the =
following:</DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Linux ---> CCP conf request (with 3 =
compression=20
schemes, A, B and C) --> PPP server</FONT></DIV>
<DIV>
<DIV><FONT face=3DArial size=3D2>Linux <-- CCP conf reject (schemes, =
B and C)=20
<-- PPP server</FONT></DIV>
<DIV> ---> CCP conf =
request=20
(scheme A) --> PPP server</DIV>
<DIV> <--- CCP conf =
ACK=20
(scheme A) <-- PPP server</DIV>
<DIV> </DIV>
<DIV>Comments?</DIV>
<DIV> </DIV>
<DIV>P.S. I am using PPPoE for the=20
testing.</DIV></DIV></FONT></DIV></BODY></HTML>
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