hi，can you give me some he lp about PPPoE packets?
"LIU Wei O" <Wei.o.Liu-cfy2TCaE7SHLM0G2K2Xlo2/[email protected]> Wed, 16 Jun 2010 13:34:16 +0800
| Newsgroups | gmane.network.wireshark.user,gmane.network.ethereal.user |
|---|---|
| Message-ID | <8909ACFF8ED2C746BD0006B317B4962705B2D712@CNSHGSMBS03.ad4.ad.alcatel.com> |
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Hi,dear shark,
I have a question about =A1=AEPPPoE payload length=A1=AF.
As we know In RFC 2516,It defined the =A1=AELength field=A1=AF :
=20
The LENGTH field is sixteen bits. The value, in network byte order,
indicates the length of the PPPoE payload. It does not include the
length of the Ethernet or PPPoE headers.
=20
=20
You can refer to the packet that be captured in SNI(service network =
interface) in the annex,you can find that=20
In dscovery stage ,the payload length is right ,however in session stage =
,wireshark judge it has some error because it
think the =A1=AEpayload length=A1=AF should contain the pads and CRC.
=20
incongruous operation mechanism between dscovery stage and session stage =
in the PPPoE.
=20
Now we use the R1.2.9,when will the issue be delivered?
=20
Best regards
Yours=20
=
Wei liu
=20
Liuwei
***I am here,but also there.***
=20
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<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:14.0pt'>Hi,dear shark,<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:14.0pt'> I have a
question about =A1=AEPPPoE payload length=A1=AF.<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:14.0pt'> As we know
In RFC 2516,It defined the </span><span lang=3DEN-US =
style=3D'font-size:12.0pt;
color:red'>=A1=AE</span><span lang=3DEN-US =
style=3D'font-size:12.0pt;font-family:"Arial","sans-serif";
color:red'>Length field=A1=AF</span><span lang=3DEN-US =
style=3D'font-size:12.0pt;
font-family:"Arial","sans-serif"'> :</span><span lang=3DEN-US =
style=3D'font-size:
10.0pt;font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left;text-autospace:none'><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Courier'>The LENGTH =
field is sixteen
bits. The value, in network byte order,<o:p></o:p></span></p>
<p class=3DMsoNormal align=3Dleft =
style=3D'text-align:left;text-autospace:none'><span
lang=3DEN-US style=3D'font-size:10.0pt;font-family:Courier'>indicates =
the length of
the PPPoE payload. It does not include the<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Courier'>length
of the Ethernet or PPPoE headers.<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Courier'><o:p> </o:p></span></=
p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:Courier'><o:p> </o:p></span></=
p>
<p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:14.0pt'>You =
can refer to
the packet that be captured in SNI(service network interface) in the =
annex,you can
find that <o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:14.0pt'>In =
dscovery stage
,the payload length is right ,however in session stage ,wireshark judge =
it has
some error because it<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:14.0pt'>think =
the =A1=AEpayload
length=A1=AF should contain the pads and CRC.<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:14.0pt'><o:p> </o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:14.0pt;color:red'>incongruous</span><span
lang=3DEN-US style=3D'font-size:14.0pt'> operation mechanism between =
dscovery stage
and session stage in the PPPoE.<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:14.0pt'><o:p> </o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:14.0pt'>Now =
we use the
R1.2.9,when will the issue be delivered?<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:14.0pt'><o:p> </o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:14.0pt'>Best =
regards<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:14.0pt'> &nbs=
p;  =
; =
Yours <o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:14.0pt'> &nbs=
p;  =
; =
&=
nbsp; &n=
bsp; &nb=
sp;
Wei liu<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:14.0pt;color:#0070C0'>Liuwei<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:14.0pt;color:#0070C0'>***I
am here,but also there.***<o:p></o:p></span></p>
<p class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></span></p>
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