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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Hi Hunter,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Maybe Dave has something, but maybe not.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I just booted a diskless simh VAX instance from a simh VAX system running on the same LAN. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>The Second phase of the boot (after the MOP load of the Secondary boot loader) had a few retries until the boot succeeded and then the node came up and stayed up without issue. The booting system had this minimal configuration:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> sim> set cpu 256<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> sim> set XQ mac=08-00-2b-11-22-44<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> sim> attach XQ eth2<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> sim> BOOT<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> Then entered BOOT XQ at the >>> prompt.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>The simh host system in this case was running Windows. Just for grins, I tried the same thing from a Ubuntu 18.04 Linux system running in a VirtualBox VM on that same Windows host.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>The simh Ethernet layer has dramatically more internal packet buffering (maybe 50 X) than anything real DEC hardware ever had. This might account for the relatively smooth behavior I’m seeing.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Meanwhile, from what you’ve mentioned it seems you’ve got a simh instance talking to real DEC hardware.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Using the 4.0 Current codebase, you might want to look at: HELP XQ CONFIG SET THROTTLE<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>You may also want to show us the simh VAX configuration file you are using…<o:p></o:p></span></p><p class=MsoNormal><a name="_MailEndCompose"><span style='color:#1F497D'><o:p> </o:p></span></a></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:#1F497D'>Mark<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='color:windowtext'>From:</span></b><span style='color:windowtext'> Simh [mailto:simh-bounces@trailing-edge.com] <b>On Behalf Of </b>Dave Wade<br><b>Sent:</b> Wednesday, July 18, 2018 10:14 AM<br><b>To:</b> 'Hunter Goatley' <goathunter@goatley.com>; 'Simh' <simh@trailing-edge.com><br><b>Subject:</b> Re: [Simh] Cluster communications errors<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-GB style='color:windowtext'>Hunter,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:windowtext'>Is it set to Autosense Speed and Duplex? Is it getting confused? Can it be set to a fixed speed.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:windowtext'>Dave<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:windowtext'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='color:windowtext'>From:</span></b><span style='color:windowtext'> Simh <<a href="mailto:simh-bounces@trailing-edge.com">simh-bounces@trailing-edge.com</a>> <b>On Behalf Of </b>Hunter Goatley<br><b>Sent:</b> 18 July 2018 16:58<br><b>To:</b> Simh <<a href="mailto:simh@trailing-edge.com">simh@trailing-edge.com</a>><br><b>Subject:</b> Re: [Simh] Cluster communications errors<o:p></o:p></span></p></div></div><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>My mistake. I'm not running V4.0, I'm running </span><span lang=EN-GB style='font-size:13.5pt;font-family:"Times New Roman",serif'>V3.10-0 RC1.<br><br></span><span lang=EN-GB>After posting, it dawned on me that I should have tried SIMH V3.9.0, but it fails to boot:<o:p></o:p></span></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><pre><span lang=EN-GB>(BOOT/R5:0 DUA0<o:p></o:p></span></pre><pre><span lang=EN-GB><o:p> </o:p></span></pre><pre><span lang=EN-GB><o:p> </o:p></span></pre><pre><span lang=EN-GB><o:p> </o:p></span></pre><pre><span lang=EN-GB> 2..<o:p></o:p></span></pre><pre><span lang=EN-GB>-DUA0<o:p></o:p></span></pre><pre><span lang=EN-GB> 1..0..<o:p></o:p></span></pre><pre><span lang=EN-GB><o:p> </o:p></span></pre><pre><span lang=EN-GB>HALT instruction, PC: 00004C02 (HALT)<o:p></o:p></span></pre><pre><span lang=EN-GB>sim><o:p></o:p></span></pre></blockquote><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-GB>I'm not sure why. I'm using the KA655x.bin that came with V3.9.0 and a new nvram.bin file, but everything else is the same as the V3.10-0 RC1 instance.<br><br>I just downloaded the current GitHub sources and compiled them (<a href="https://github.com/simh/simh/commit/15fd71b97c8aaec29dc1bbbd3473c3f0d582c9ff"><span style='font-size:9.0pt;font-family:Consolas;color:#444D56;background:#F1F8FF'>15fd71b</span></a>). It boots, but I see the same behavior of losing connection to the cluster.<br><br>I also should have mentioned that this dedicated Ethernet card is plugged into the same switch as all of the other cluster members, so that <i>shouldn't</i> be an issue.<br><br>Thanks.<br><br>Hunter<o:p></o:p></span></p><pre><span lang=EN-GB><o:p> </o:p></span></pre></div></div></div></body></html>