[LDM #GUQ-669331]: Both Radar and Satellite feeds stopped downloading abruptly

John,

> The radar and satellite ran normally until around 11am CDT or so when 
> suddenly both
> started to get behind.  I also saw the packet counts in a minute long capture 
> decline
> dramatically at that time as well (1/6 the amount).  But, about 15 minutes 
> later, the
> packet counts came back up to about 1/2 of normal.  The radar slipped behind 
> about an
> hour around this time but began clawing it's way back to where it is now only 
> 20 minutes
> behind (on good times it's only 5-10 minutes behind).

Your reception slowing down regardless of source is consistent with the problem 
being at your end and not ours.

I notice that you're no longer requesting the IDS|DDPLUS feed. If you did, I'm 
certain that it would show that those products arrive with little latency.

> One of our two satellite feeds is totally caught back up (one that updates on 
> the hour
> only), but the other (NOTHER) is still paused at 1545Z.
> 
> So over all, PSU is much better for radar but still has problems with 
> satellite.  Or,
> perhaps it would have been exactly the same had I stuck with the ucar servers.

I'm certain that's the case.

Is your campus running the Palo Alto intrusion detection/prevention system? If 
so, that's a very complicated system with lots of knobs and switches. We've 
experienced cases in which seemingly innocuous changes to its settings resulted 
in massive disruption of LDM traffic.

> The
> absolutely most mystifying problem I've encountered since two problems I 
> encountered
> working on aircraft avionics.

Welcome to the Internet. :-)

You're running a slightly-older version of the LDM, 6.13.6. I recommend that 
you upgrade to the latest version, 6.13.11. It won't solve your problem, but it 
does have some improvements in the logging system.

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: GUQ-669331
Department: Support LDM
Priority: Normal
Status: Closed
===================
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