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[aprssig] Tier 2 Routing Question

Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.to
Thu Oct 22 13:59:52 UTC 2009


Can someone explain some APRS-IS routing issues that I see going on as I 
type?

There's a station, K2ENG-12 running my APRSISCE client for Windows 
mobile.  It is connected to T2BELGIUM according to the qAC in his raw 
packets at aprs.fi.

T2BELGIUM's status page http://belgium.aprs2.net:14501/ doesn't show him 
connected there, but when I connect to that server's 14580 port and 
filter on u/APWM*, I get the following packets.

T2BELGIUM packets:
K2ENG-12>APWM00,TCPIP*,qAC,T2MIDWEST:@135358h3844.05N/09203.69Wk215/063/A=000691APRS-IS 
for WM6/Voice 146.52
# javAPRSSrvr 3.15b06 22 Oct 2009 13:54:20 GMT T2BELGIUM 89.106.245.30:14580
# javAPRSSrvr 3.15b06 22 Oct 2009 13:54:40 GMT T2BELGIUM 89.106.245.30:14580
K2ENG-12>APWM00,TCPIP*,qAC,T2MIDWEST:@135450h3843.34N/09204.42Wk219/064/A=000709APRS-IS 
for WM6/Voice 146.52
# javAPRSSrvr 3.15b06 22 Oct 2009 13:55:11 GMT T2BELGIUM 89.106.245.30:14580
# javAPRSSrvr 3.15b06 22 Oct 2009 13:55:31 GMT T2BELGIUM 89.106.245.30:14580
K2ENG-12>APWM00,TCPIP*,qAC,T2MIDWEST:@135542h3842.61N/09205.12Wk204/064/A=000715APRS-IS 
for WM6/Voice 146.52
# javAPRSSrvr 3.15b06 22 Oct 2009 13:56:03 GMT T2BELGIUM 89.106.245.30:14580

I connected to another Tier 2 server, and see the following packets:

T2DC packets:
# javAPRSSrvr 3.15b05
user KJ4ERJ-TS pass -1
# logresp KJ4ERJ-TS unverified, server T2DC
#filter u/APWM*
# javAPRSSrvr 3.15b05 22 Oct 2009 13:54:28 GMT T2DC 74.204.161.98:14580 
Please use port 14580 for all of your connections - thanks!
# javAPRSSrvr 3.15b05 22 Oct 2009 13:54:48 GMT T2DC 74.204.161.98:14580 
Please use port 14580 for all of your connections - thanks!
K2ENG-12>APWM00,TCPIP*,qAC,T2MIDWEST:@135450h3843.34N/09204.42Wk219/064/A=000709APRS-IS 
for WM6/Voice 146.52
# javAPRSSrvr 3.15b05 22 Oct 2009 13:55:11 GMT T2DC 74.204.161.98:14580 
Please use port 14580 for all of your connections - thanks!
# javAPRSSrvr 3.15b05 22 Oct 2009 13:55:31 GMT T2DC 74.204.161.98:14580 
Please use port 14580 for all of your connections - thanks!
K2ENG-12>APWM00,TCPIP*,qAC,T2MIDWEST:@135542h3842.61N/09205.12Wk204/064/A=000715APRS-IS 
for WM6/Voice 146.52
# javAPRSSrvr 3.15b05 22 Oct 2009 13:56:03 GMT T2DC 74.204.161.98:14580 
Please use port 14580 for all of your connections - thanks!
# javAPRSSrvr 3.15b05 22 Oct 2009 13:56:23 GMT T2DC 74.204.161.98:14580 
Please use port 14580 for all of your connections - thanks!
K2ENG-12>APWM00,TCPIP*,qAC,T2MIDWEST:@135624h3841.91N/09205.40Wk198/063/A=000712APRS-IS 
for WM6/Voice 146.52

However, when I connect to third.aprs.net with the same filter, I get 
nothing (third is where T2BELGIUM is connected).

third.aprs.net packets:
# javAPRSSrvr 3.15b06
user KJ4ERJ-TS pass -1
# logresp KJ4ERJ-TS unverified, server THIRD
#filter u/APWM*
# javAPRSSrvr 3.15b06 22 Oct 2009 13:53:42 GMT THIRD 
146.229.162.182:14580 core.aprs.net
# javAPRSSrvr 3.15b06 22 Oct 2009 13:54:02 GMT THIRD 
146.229.162.182:14580 core.aprs.net
# javAPRSSrvr 3.15b06 22 Oct 2009 13:54:22 GMT THIRD 
146.229.162.182:14580 core.aprs.net
# javAPRSSrvr 3.15b06 22 Oct 2009 13:54:42 GMT THIRD 
146.229.162.182:14580 core.aprs.net
# javAPRSSrvr 3.15b06 22 Oct 2009 13:55:02 GMT THIRD 
146.229.162.182:14580 core.aprs.net
# javAPRSSrvr 3.15b06 22 Oct 2009 13:55:22 GMT THIRD 
146.229.162.182:14580 core.aprs.net
# javAPRSSrvr 3.15b06 22 Oct 2009 13:55:42 GMT THIRD 
146.229.162.182:14580 core.aprs.net
# javAPRSSrvr 3.15b06 22 Oct 2009 13:56:02 GMT THIRD 
146.229.162.182:14580 core.aprs.net
# javAPRSSrvr 3.15b06 22 Oct 2009 13:56:22 GMT THIRD 
146.229.162.182:14580 core.aprs.net
# javAPRSSrvr 3.15b06 22 Oct 2009 13:56:42 GMT THIRD 
146.229.162.182:14580 core.aprs.net

Is there something amiss in the routing of the -IS from tier 2 to the 
core this morning?

Lynn (D) - KJ4ERJ - Just asking the question




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