Tony,<div><br></div><div>The <a href="http://aunz.aprs2.net">aunz.aprs2.net</a> is the regional rotate address for the Tier2 APRS servers in the region, which as you see contains both AU and NZ servers.</div><div>This is the 'official' address to use these days for the round-robin behaviour.</div>
<div><br></div><div>The <a href="http://aprs2.net">aprs2.net</a> rotate address pools are dynamic, and are made up of viable servers based on their health and throughput. There are several metrics that are monitored from all servers - including missing/dropped packets counts. If you are interested in the current health of the entire APRS internet network, you can check <a href="http://aprs2.net/mon.htm">http://aprs2.net/mon.htm</a> - this lists which servers currently belong to each regional rotate pool as well as their current loading and throughput.</div>
<div><br></div><div>All of the localised APRS-IS servers belong to the Tier2 network, however in the early days before Tier2 existed we used the local <a href="http://aprs.net.au">aprs.net.au</a> addresses, with our own rotate address - this does still exist, however it does not contain ALL of the available servers and should be considered as depreciated.</div>
<div><br></div><div>All Tier2 servers globally have a common configuration, being user-defined port 14580 - you can connect to ANY T2 server on the planet on port 14580, define your filter and get the same feed. There is a <a href="http://rotate.aprs2.net">rotate.aprs2.net</a> address that will connect to ANY of the Tier2 servers.</div>
<div><br></div><div>The APRS network these days consists of the end users and iGates (effectively Tier3) predominantly connecting to the Tier2 servers (<a href="http://aprs2.net">aprs2.net</a>). Tier2 itself is interlinked using 4 or 5 hub servers (T2HUBx). These HUB servers in turn uplink to the APRS Core servers (Tier1). Services such as <a href="http://aprs.fi">aprs.fi</a> are connected into Tier2, whilst findu I believe is still connected to the core.</div>
<div><br></div><div>However, a lot of users still insist on connecting directly to the core servers, resulting in them often being overloaded, and the result being packets going missing (This was the reason for the Tier2 network in the first place)</div>
<div><br></div><div>You can find more detail on the Tier2 network at <a href="http://aprs2.net">http://aprs2.net</a></div><div><br></div><div>Regards,</div><div>Geoff VK8GG</div><div><br></div><div><br><br><div class="gmail_quote">
On Mon, Jan 7, 2013 at 6:32 PM, Tony Hunt <span dir="ltr"><<a href="mailto:wavetel@internode.on.net" target="_blank">wavetel@internode.on.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Sorry folks I messed up the subject thread of this one before so Ive attempted to get it right again.<br>
<br>
Ive just tried using <a href="http://aunz.aprs2.net" target="_blank">aunz.aprs2.net</a> and I found that it actually logged me into <a href="http://third.aprs.net.au" target="_blank">third.aprs.net.au</a> at this time. You can see the status page as quoted previously <a href="http://third.aprs.net.au:14501/" target="_blank">http://third.aprs.net.au:<u></u>14501/</a> .Third is actually vk7hse <a href="mailto:t2tas@aprs2.net" target="_blank">t2tas@aprs2.net</a><br>
<br>
I just saw you before Grant logged in with vk5gr-1 with cumulus 1.9.2 on <a href="http://second.aprs.net.au" target="_blank">second.aprs.net.au</a><br>
<br>
I dont know exactly what <a href="http://uanz.aprs2.net" target="_blank">uanz.aprs2.net</a> is but it appears to be similar to <a href="http://rotate.aprs.net.au" target="_blank">rotate.aprs.net.au</a> in that if you do a nameserver lookup you get 5 separate possible IPs that resolve<br>
<br>
Name: <a href="http://aunz.aprs2.net" target="_blank">aunz.aprs2.net</a><br>
Addresses: 203.31.7.24, 125.236.199.246, 150.101.108.109, 202.49.254.23,202.62.137.85<br>
which is<br>
T2QLD VK4FQ , T2APRSNZ ZL2TZE , <a href="http://third.aprs.net.au" target="_blank">third.aprs.net.au</a>, <a href="http://first.aprs.net.nz" target="_blank">first.aprs.net.nz</a>, <a href="http://second.aprs.net.au" target="_blank">second.aprs.net.au</a><br>
<br>
The same lookup on <a href="http://rotate.aprs.net.au" target="_blank">rotate.aprs.net.au</a> gives you<br>
Name: <a href="http://rotate.aprs.net.au" target="_blank">rotate.aprs.net.au</a><br>
Addresses: 202.62.137.85, 150.101.108.109<br>
which is <a href="http://second.aprs.net.au" target="_blank">second.aprs.net.au</a> and <a href="http://third.aprs.net.au" target="_blank">third.aprs.net.au</a><br>
<br>
You will see some commonality between these first 2<br>
<br>
A Lookup of Name: <a href="http://rotate.aprs.net.nz" target="_blank">rotate.aprs.net.nz</a> reveals<br>
Address: 125.236.232.235 which seems to be the same as <a href="http://aprs.net.nz" target="_blank">aprs.net.nz</a><br>
<br>
Clearly theres a lot more more options open to users of <a href="http://aunz.aprs2.net" target="_blank">aunz.aprs2.net</a> but its no guarantee it would get you around a bottleneck between VK or ZL and <a href="http://aprs.fi" target="_blank">aprs.fi</a> servers. Using <a href="http://aunz.aprs2.net" target="_blank">aunz.aprs2.net</a> would open up a heap more variables. The different ISPs used by different server operators all have different routes out of vk/zl . But perhaps its really up to the routes between the Tier 2 servers and <a href="http://aprs.fi" target="_blank">aprs.fi</a> . If it is packet loss on the international routes then it would need a bit of homework to find just where.<br>
<br>
<br>
Tony Hunt VK5AH <a href="mailto:wavetel@internode.on.net" target="_blank">wavetel@internode.on.net</a><br>
<br>
----- Original Message ----- <br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Date: Sun, 6 Jan 2013 19:17:32 +1030<br>
From: "Tony Hunt" <<a href="mailto:wavetel@internode.on.net" target="_blank">wavetel@internode.on.net</a>><br>
To: <<a href="mailto:ozaprs@aprs.net.au" target="_blank">ozaprs@aprs.net.au</a>><br>
Cc: <a href="mailto:vk5gr@bigpond.com" target="_blank">vk5gr@bigpond.com</a><br>
Subject: Re: [OZAPRS] OZAPRS Digest, Vol 42, Issue 1<br>
Message-ID: <<u></u>529C41D537F04A64B375A79B476FE6<u></u>BA@athlonxp><br>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";<br>
reply-type=original<br>
<br>
Grant,<br>
<br>
Your assuming that the connection is good between <a href="http://aprs.fi" target="_blank">aprs.fi</a> and the Australian<br>
servers. Its not. Its a proven fact that theres packet loss at times between<br>
our part of the world and servers like <a href="http://aprs.fi" target="_blank">aprs.fi</a> and <a href="http://findu.com" target="_blank">findu.com</a> . Ive seen<br>
hours go by in times past where the track of a vehical is just missing on<br>
findu and <a href="http://aprs.fi" target="_blank">aprs.fi</a> although it was gated properly to the net and also seen by<br>
others logged into the same server via the net. It appears there are times<br>
that the international connections (offshore) get pretty flakey. Thats ok if<br>
your surfing the net because your browser or email just takes a bit longer<br>
on that route until it resolves but with the aprs servers the packet is lost<br>
and then its just lost and if you want to see if the server got it then it<br>
just didnt get there because you guessed it, it was lost.<br>
We have previously had discussions about having regionalised mirrors for<br>
things like findu and <a href="http://aprs.fi" target="_blank">aprs.fi</a> as these servers basically cop the full<br>
international load. The chances of seeing any locally based mirrors/servers<br>
appear soon does not seem like its going to happen.<br>
<br>
If your still not 100% sure the problem is not at your end then try setting<br>
up a different machine to monitor the situation. If you can organise a<br>
independant 3G connection on a laptop to monitor it then great. Try logging<br>
the laptop into the same server as your wx station and see if you loose any<br>
data at the same time as you find lost data on <a href="http://aprs.fi" target="_blank">aprs.fi</a> happening. You could<br>
also log the laptop into a different server and see the efffect.<br>
try these . You will find that first and second are one of the same. Where<br>
first/second is currently feeding the Tier2 system via T2HUB4<br>
<a href="http://69.39.33.165:14501/" target="_blank">http://69.39.33.165:14501/</a> and third is feeding via T2HUB1<br>
<a href="http://193.190.240.226:14501/" target="_blank">http://193.190.240.226:14501/</a><br>
You could try the ZL servers as well <a href="http://first.aprs.net.nz" target="_blank">first.aprs.net.nz</a> as they may take<br>
different routes to get to <a href="http://aprs.fi" target="_blank">aprs.fi</a> via Hawaii to LA perhaps. Many of our<br>
routes leave Australia via Singapore Japan and Asia.<br>
<br>
<a href="http://first.aprs.net.au:14501/" target="_blank">http://first.aprs.net.au:<u></u>14501/</a><br>
<a href="http://second.aprs.net.au:14501/" target="_blank">http://second.aprs.net.au:<u></u>14501/</a><br>
<a href="http://third.aprs.net.au:14501/" target="_blank">http://third.aprs.net.au:<u></u>14501/</a><br>
<a href="http://first.aprs.net.nz:14501/" target="_blank">http://first.aprs.net.nz:<u></u>14501/</a><br>
<a href="http://second.aprs.net.nz:14501/" target="_blank">http://second.aprs.net.nz:<u></u>14501/</a><br>
<br>
Tony Hunt VK5AH <a href="mailto:wavetel@internode.on.net" target="_blank">wavetel@internode.on.net</a><br>
<br>
</blockquote><div class="HOEnZb"><div class="h5">
<br>
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