[OZAPRS] Problem with rotate.aprs.net.au address?
wavetel at internode.on.net
Mon Jan 7 20:02:10 EST 2013
Sorry folks I messed up the subject thread of this one before so Ive
attempted to get it right again.
Ive just tried using aunz.aprs2.net and I found that it actually logged me
into third.aprs.net.au at this time. You can see the status page as quoted
previously http://third.aprs.net.au:14501/ .Third is actually vk7hse
t2tas at aprs2.net
I just saw you before Grant logged in with vk5gr-1 with cumulus 1.9.2 on
I dont know exactly what uanz.aprs2.net is but it appears to be similar to
rotate.aprs.net.au in that if you do a nameserver lookup you get 5 separate
possible IPs that resolve
Addresses: 126.96.36.199, 188.8.131.52, 184.108.40.206,
T2QLD VK4FQ , T2APRSNZ ZL2TZE , third.aprs.net.au, first.aprs.net.nz,
The same lookup on rotate.aprs.net.au gives you
Addresses: 220.127.116.11, 18.104.22.168
which is second.aprs.net.au and third.aprs.net.au
You will see some commonality between these first 2
A Lookup of Name: rotate.aprs.net.nz reveals
Address: 22.214.171.124 which seems to be the same as aprs.net.nz
Clearly theres a lot more more options open to users of aunz.aprs2.net but
its no guarantee it would get you around a bottleneck between VK or ZL and
aprs.fi servers. Using aunz.aprs2.net 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 aprs.fi . If it is packet loss on the international
routes then it would need a bit of homework to find just where.
Tony Hunt VK5AH wavetel at internode.on.net
----- Original Message -----
> Date: Sun, 6 Jan 2013 19:17:32 +1030
> From: "Tony Hunt" <wavetel at internode.on.net>
> To: <ozaprs at aprs.net.au>
> Cc: vk5gr at bigpond.com
> Subject: Re: [OZAPRS] OZAPRS Digest, Vol 42, Issue 1
> Message-ID: <529C41D537F04A64B375A79B476FE6BA at athlonxp>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> Your assuming that the connection is good between aprs.fi and the
> servers. Its not. Its a proven fact that theres packet loss at times
> our part of the world and servers like aprs.fi and findu.com . Ive seen
> hours go by in times past where the track of a vehical is just missing on
> findu and aprs.fi although it was gated properly to the net and also seen
> others logged into the same server via the net. It appears there are times
> that the international connections (offshore) get pretty flakey. Thats ok
> your surfing the net because your browser or email just takes a bit longer
> on that route until it resolves but with the aprs servers the packet is
> and then its just lost and if you want to see if the server got it then it
> just didnt get there because you guessed it, it was lost.
> We have previously had discussions about having regionalised mirrors for
> things like findu and aprs.fi as these servers basically cop the full
> international load. The chances of seeing any locally based
> appear soon does not seem like its going to happen.
> If your still not 100% sure the problem is not at your end then try
> up a different machine to monitor the situation. If you can organise a
> independant 3G connection on a laptop to monitor it then great. Try
> the laptop into the same server as your wx station and see if you loose
> data at the same time as you find lost data on aprs.fi happening. You
> also log the laptop into a different server and see the efffect.
> try these . You will find that first and second are one of the same. Where
> first/second is currently feeding the Tier2 system via T2HUB4
> http://126.96.36.199:14501/ and third is feeding via T2HUB1
> You could try the ZL servers as well first.aprs.net.nz as they may take
> different routes to get to aprs.fi via Hawaii to LA perhaps. Many of our
> routes leave Australia via Singapore Japan and Asia.
> Tony Hunt VK5AH wavetel at internode.on.net
More information about the OZAPRS