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[Support #YML-258703]: Re: IDD Feed Request

> It looks we have been operating at a reduced capacity for our LDM/Unidata 
> server since November 20th.
> I have removed typhoon.plymouth.edu from our feed request strings, but there 
> is no noticeable change in throughput.
> Our only authorized local feed for NEXRAD, NIMAGE, and UNIWISC is now 
> ldm.meteo.psu.edu.
> I've wanted to use Drexel as a primary feed since September, however I have 
> never been able to contact anyone at Drexel that was able to give us access.  
> The IDD list of providers 
> (http://www.unidata.ucar.edu/software/idd/sitelist.html) is out of date,  The 
> e-mail address and phone number given as contact for Drexel has not worked 
> for months.
> November 7 we increased our I2 bandwidth capability, but we didn't start 
> exercising our capacity until Monday, November 12th.  I wouldn't have given 
> the go-ahead to re-configure our network if I didn't think everything was 
> fine-and-dandy with our feeds.
> -----Original Message-----
> From: Brendon Hoch [mailto:address@hidden
> Sent: Wednesday, November 28, 2007 10:32 AM
> To: Zehel, Samuel
> Cc: address@hidden
> Subject: Re: IDD Feed Request
> Hi Samuel,
> Sorry for the bad timing on this.  If you have a cell phone, I'd be
> happy to call you if this happens again.  We are feeding the same
> feedtypes to other downstream sources, so I'm not sure why your LDM
> setup would cause the freezing on our end.  I'm ccing Unidata support to
> see if they have any ideas.  Looking at the logs on storm, it appears
> that your setup was switching many times between primary and alternate
> sites, I'm wondering if that was causing the hiccups on our end.
> Again, my apologies for the inconvenience, please feel free to feed from
> storm.plymouth.edu in the meantime.
> Brendon
> Zehel, Samuel wrote:
> > I was out last week, and was not able to respond until now.  I will pursue 
> > another feed for these products, since you're not sure what the problem is.
> >
> > I wish you would check with me before you pull any future plugs.  I had the 
> > feeds divided into separate channels to maximize our throughput.  I will 
> > now have to re-evaluate our configuration.
> >
> > We did have some power-outages the week of November 17th, however I was not 
> > aware of any other issues.
> >
> > In October I asked Unidata if the feeds looked good.  They stated "I think 
> > you are where you should be. "Please find the enclosed letter".
> >
> >
> > -----Original Message-----
> > From: Brendon Hoch [mailto:address@hidden
> > Sent: Tuesday, November 20, 2007 4:59 PM
> > To: Zehel, Samuel
> > Cc: Brendon Hoch
> > Subject: Re: IDD Feed Request
> >
> > Samuel,
> >
> > We've been having some problems with our servers during the last few
> > months.  While I'm not 100% sure what the problem is, it is interesting
> > to note that they have all started since we've added shu.cup.edu to our
> > LDM configuration.
> >
> > Today, we had an extreme situation where typhoon.plymouth.edu reset its
> > network connection on 5 separate occasions within the span of an hour.
> > After troubleshooting the situation, it seemed that the server settled
> > down considerably after removing your entries from our LDM configuration.
> >
> > I also noticed on storm.plymouth.edu that the LDM logs indicate your
> > system seems to be up & down with regards to connectivity.  I'm
> > wondering if there may be a problem on your side which may be affecting
> > things.
> >
> > In order to insure system reliability, I have temporarily removed your
> > LDM access from typhoon.  However, you are welcome to try accessing
> > storm via LDM for your other IDD feed needs.  If this then causes
> > problems on storm, we will let you know so that appropriate action can
> > be taken.
> >
> > Please let me know if you have any questions or concerns.  I will be
> > away from the office the rest of the week, but checking email sporadically.
> >
> > Thanks,
> > Brendon
> >
> --
> Brendon Hoch
> Technology Manager
> Judd Gregg Meteorology Institute
> MSC 48, Boyd Hall 321A
> Plymouth State University
> Plymouth, NH 03264
> (603)535-2818 Fax: (603)535-2723
> http://vortex.plymouth.edu/~bhoch

To better allow us to determine the issue can you please provide:

The messages in the downstream LDM's log file.


Jeff Weber
Unidata User Support

Ticket Details
Ticket ID: YML-258703
Department: Support IDD
Priority: Normal
Status: Open

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