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<p>TOPOL? Hmm... No, I hadn't heard of that, either. It sounds
almost familiar, but I don't know why Tops-20 would be asking for
it because it doesn't appear to be serving it, viz:<br>
</p>
<blockquote><font face="Courier">This is node VENTI2 NSP version
4.0.0 Routing version 2.0.0<br>
<br>
Job Program Type Object Host State Trans
Recv User<br>
<br>
2 SYSJB1 SRV (559) PHONE VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) POSI VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) POSI VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) POSI VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) MAIL11 VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) TASK VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) NCU VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) FAL VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) NCU VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) EVENT VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) FAL VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) LOOP VENTI2 CI wait 0
0 OPERATOR<br>
2 SYSJB1 SRV (559) FAL VENTI2 CI wait 0
0 OPERATOR<br>
NRT SRV (559) NVT VENTI2 CI wait 0 0<br>
CTM SRV (559) CTERM VENTI2 CI wait 0 0<br>
---</font><br>
</blockquote>
The numerics for the objects would be the following (last column
with SRV:<br>
<blockquote><font size="4"><tt>JFN Program Fork Pointer
Status File Specification:<br>
25 -- 35 0(8) Rd App SRV:29..0</tt><tt><br>
</tt><tt>26 ORION 21 0(8) Rd App
SRV:47..0 </tt><tt><br>
</tt><tt>27 ORION 21 0(8) Rd App
SRV:47..0 </tt><tt><br>
</tt><tt>30 ORION 21 0(8) Rd App
SRV:47..0</tt><tt><br>
</tt><tt>31 VAXMAIL 33 0(8) Rd App
SRV:27..0 </tt><tt><br>
</tt><tt>33 FAL 61 0(8) Rd App
SRV:FAL..0</tt><tt><br>
</tt><tt>35 FAL 57 0(8) Rd App
SRV:FAL..0</tt><tt><br>
</tt><tt>36 FAL 54 0(8) Rd App
SRV:FAL..0</tt><tt><br>
</tt><tt>37 NMLT20 31 0(8) Rd App
SRV:19..0</tt><tt><br>
</tt><tt>40 </tt></font><font size="4"><tt><font size="4"><tt>NMLT20</tt></font>
31 0(8) Rd App SRV:26..0</tt><tt><br>
</tt><tt>41 </tt></font><font size="4"><tt><font size="4"><tt>NMLT20</tt></font>
31 0(8) Rd App SRV:25..0</tt><tt><br>
</tt><tt>42 </tt></font><font size="4"><tt><font size="4"><tt>NMLT20</tt></font>
31 0(8) Rd App SRV:19..0</tt><tt><br>
</tt><tt>46 SMTP 34 0(7) Rd App
SRV:TASK.MX-LISTENER.0<br>
<br>
Frk Prog State PC Time<br>
21 ORION Sleep 415313 0:24 51<br>
31 NMLT20 Sleep 562473 3:54 7<br>
32 FAL Sleep 415312 0:00 60<br>
33 VMAIL Sleep 040313 0:00 9<br>
34 SMTDCN Sleep 000675 27:51 0<br>
35 PHNSRV Sleep 400270 0:00 3<br>
<br>
</tt></font></blockquote>
<p>So, no TOPOL that I can discern. See if you can get me a bit of
a packet trace, would you? I'll have a look around.<br>
</p>
<p>If it's in the NICE process (NMLT20), I'll be out of luck because
they never released those sources, but maybe it's in ROUTER.<br>
</p>
<div class="moz-cite-prefix">On 10/27/21 8:54 PM, Paul Koning wrote:<br>
</div>
<blockquote type="cite"
cite="mid:AEE2668E-CFE6-493F-953F-3505DCDFF9D8@comcast.net">
<pre class="moz-quote-pre" wrap="">
</pre>
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">On Oct 27, 2021, at 8:44 PM, Peter Lothberg <a class="moz-txt-link-rfc2396E" href="mailto:roll@stupi.com"><roll@stupi.com></a> wrote:
...
The 4.x DECnet over DDCMP DUP/KMC for 2020 has reduced "segment size'
from 576 to 390 or something like that due to limited buffer space.
</pre>
</blockquote>
<pre class="moz-quote-pre" wrap="">
256 actually. Why, I don't know, but since that is communicated to the other end in the connect initiate or connect confirm message, it doesn't cause any problems only than some possible drop in performance.
PyDECnet can talk to those Phase II nodes, at least to some extent; it needs some cleanup. The intercept support in particular is incomplete.
Speaking of which, I noticed that TOPS-20 upon connecting sends to its neighbor (my PyDECnet router) a connect request for an object named "TOPOL". That suggests some sort of topology information service, which makes sense. But I have no idea what that thing does, what requests it excepts and what its reply should look like.
Very long shot: does anyone have any idea? Any way of getting a network trace, perhaps?
paul
</pre>
</blockquote>
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