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Thanks a lot for these precisions.<br>
I have just contacted VSI, and we will see what they say.<br>
If anyone thinks he could help on the very difficult subject of VMS
internals involved here, and has not an i4 on OpenVMS 8.4-1h1 in his
laboratory, he should contact me and use my environment by vpn.<br>
<br>
Gérard Calliet<br>
<div class="moz-cite-prefix">Le 28/03/2016 15:44, Hittner, David T
(IS) a écrit :<br>
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<p class="MsoNormal"><span style="color:#1F497D">PCAP-VMS is
kind of strange software.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">OpenVMS
provides a PCAP library, which is not a full or complete
implementation of the PCAP functionality found on other
platforms. It is good enough for Ethernet packet dumping,
but was not good enough for full—featured PCAP, which is why
PCAP-VMS was written. PCAP-VMS is unsupported software that
was written by a Digital/Compaq/HP OpenVMS engineer and
depends on some undocumented interfaces in the OpenVMS
network drivers to implement functionality. If VSI changed
those undocumented APIs, it may have broken PCAP-VMS. You
may need to contact VSI support and ask them if any of the
network interfaces has changed that might break PCAP-VMS,
and what might need to be fixed in PCAP-VMS to work with VSI
OpenVMS.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">You might also
ask them to support a full-featured PCAP library in the
future, so that we don’t need PCAP-VMS any more.
</span><span style="font-family:Wingdings;color:#1F497D">J</span><span
style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Just as a
guess, does the newer rx2800 use TOE (TCP Offload Engine)
network cards or use jumbo packets? That could change the
“standard” Ethernet packet behavior enough that PCAP-VMS may
no longer work.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Dave<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">
Simh [<a class="moz-txt-link-freetext" href="mailto:simh-bounces@trailing-edge.com">mailto:simh-bounces@trailing-edge.com</a>]
<b>On Behalf Of </b>gérard Calliet<br>
<b>Sent:</b> Sunday, March 27, 2016 6:37 PM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:simh@trailing-edge.com">simh@trailing-edge.com</a><br>
<b>Subject:</b> EXT :[Simh] simh on openvms (to get a
VAX on top of an OpenVMS Itanium) >> network issue<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hello,<o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I
need help for pcap-vms. I use (vax-)simh on top of OpenVMS
(VSI) Itanium i4.<o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I
tested vax-simh (simh 4.0 beta) and pcap-vms on OpenVMS on an
Itanium rx2660, and it worked fine.
<o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On
OpenVMS i4 (rx2880), with exactly the same configuration, and
images, I can see my NICs from the simh prompt (sho eth), I
can attach a device (attach xq0 ethn), assign it a mac
address, and my VAX-VMS on top of simh sees the emulated
device, can send data, but does not receive anything.<o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Can
you give me advice, way of tracing the problem, hypothesis ?
<o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I
tried to boot the OpenVMS host in startup_p1 MIN, to test if I
get the same problem when there is no network software on the
host (like DecNet, or Tcpip), and the problem remains.<o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I
rebuilt the pcap-vms from scratch on the i4 host, and the
problem remains.<o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Do
you think there could be an hardware issue, like the NIC which
cannot work in promiscuitus mode ?<o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Any
help should be welcomed,<o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Gérard
Calliet<o:p></o:p></p>
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