[Dxspider-support] disconnects from ARCluster nodes

Eric Carling eric at g0cgl.f2s.com
Fri May 12 13:45:19 BST 2006


Hi Tom,
 
I see node N3RA has changed to 4.4.25 and I wonder if you have noticed any
difference?
 
On my Spider link to ARC with this latest version, the same problem persists

 
Eric.
 
 
-------Original Message-------
 
From: Tom Vavra
Date: 05/11/06 22:47:34
To: The DXSpider Support list
Cc: W9ZRX
Subject: Re: [Dxspider-support] disconnects from ARCluster nodes
 
Hi Eric
 
When I first had this problem with version 4.4.23, Dave, W9ZRX, was looking
at the ARC log, and reported to me that I was not sending the pings.  When I
looked at the spider debug log, I could see that I was sending them. 
Evidently ARC was throwing them away before they were being logged. 
Comparing the two logs gives a better picture.
 
As I understand what happened in version 4.4.23, a copy of the last packet
received from a node was compared to the next incoming packet.  If they were
identical, then the incoming packet was thrown away.  If the link is busy
with PC19s, PC16s etc, then there might never be a problem.  When all you
send out on the link (like I do) is the every 5 minute ping and an every 14
minute PC50, two in a row pings can get tossed into the bit bucket. 
Increasing the obs count will get past this, but your round-trip-times will
look terrible.  I ended up changing my PC50 times to every 5 minutes.  This
logic also caused havoc with mail longer than 9 lines.  The PC31s were
getting discarded and the mail hung.  (BTW, this has been fixed in 4.4.24)
 
I have no idea what Terry did in version 4.4.24, but it has not really cured
the problem.
 
          73    Tom
----- Original Message ----- 
From: Eric Carling 
To: The DXSpider Support list 
Sent: Thursday, May 11, 2006 3:06 PM
Subject: Re: [Dxspider-support] disconnects from ARCluster nodes


Hi Tom 
 
I have a Spider node that was disconnecting every 10 minutes with a new
version ARC.
 
I did an extensive test with a 4.4.24 ARC and my Spider cluster and Spider
did not send a ping to ARC during the 25 minute test period (it was sending
pings out on Spider links). It did receive pings every 5 minutes from the
ARC and ignored every other one. I was getting disconnections every 10
minutes so I re-did the test after setting obs to 3. This time the
unanswered ping dropped the obs count to 2 and the answered ping returned
the count to 3 with no disconnection. It therefore appears for me that
Spider doesn't ping ARC and it disconnects a link with ARC on the next ping
following the obs count reaching 1 instead of zero. 
 
So, oddly my result is different to yours. I can stay connected by
increasing the obs setting. This is weird.
 
 
Eric GB7CGL-1
 
 
 
 
 
-------Original Message-------
 
From: Tom Vavra
Date: 05/11/06 15:38:47
To: DXSpider
Subject: [Dxspider-support] disconnects from ARCluster nodes
 
New ARC software was installed on N3RA, the node I connect to, last night.
Version 4.4.24.  Except for the very first ping right after initialization,
my pings to N3RA are not answered.  Setting OBS higher no longer works.  I
tried it at 4.
 
I have turned pinging off (set/ping 0 n3ra) in order to stay connected.
 
           Tom   WB8ZRL
 
 
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