[aprssig] Periodic Disconnects from APRS-IS
Steve Dimse
steve at dimse.com
Thu Jan 18 12:22:37 EST 2007
On Jan 18, 2007, at 10:44 AM, Phillip B. Pacier wrote:
> Ah! One of the main reasons why Tier 2 was created!
Pete's post had nothing to do with Tier 2.
This is a client issue, not a hub issue. The APRS IS stream has
reached the point where some people's computer/software/internet
connection cannot keep up with the full stream. This causes no
problems for the hub. Pete's point was those people with this trouble
should use a filtered feed, which is just as available on the core as
on your servers. Many people want a full feed, and have systems that
can handle it, and the core provides them the option to receive it
there.
People can make their own choice where they connect, but if you are
going to turn every post involving the APRS IS into a commercial for
your system, I will use it to remind people that the leaders of Tier
2 have in the past demonstrated their contempt for their users by
cutting off access to thousands of weather sites without warning,
using them as pawns in a failed power play.
On the other hand, the core has plenty of capacity, with high
reliability servers housed in professional data centers, and with
operators that express the highest ideals of amateur radio,
professionalism and service.
> It should also be pointed out that round-robin DNS does not account
> for a server becoming suddenly unavailable. If a server in the
> list becomes unavailable, until the DNS zone file is updated and
> all of the caching is reset, that server's IP will still be issued
> on the pseudo-random basis. There is rotate.aprs.net and there is
> also rotate.aprs2.net, but I recommend not using them for any reason.
If a client has the ability to specify a list of servers, that is the
preferred way. However, if the client only allows a single name, then
rotate.aprs.net is much better than picking a single server's name.
The core situation is monitored very closely, with human as well as
automated means, and when a change is needed in rotate.aprs.net, it
is made quickly.
Steve K4HG
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