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Re: 20010421: Thoughts on LDM reclasses

Tom,

The SPARE aka NPS feedtype was the old numerical products feedtype (before 
HDS) on the old Alden broadcast. It was made obsolete with HDS.

The fact that you see "UNIDATA|SPARE" in the feed message confirms that
UML's connection is asking for "63".

Steve Chiswell
Unidata User SUpport


On Tue, 24 Apr 2001, Tom McDermott wrote:

> On Tue, 24 Apr 2001, Frank Colby wrote:
> 
> > No, I didn't change the request statement at all.  Do you want me to put
> > the SPARE thing on to see what happens?  Right now, the request is just
> > as it was when we were getting the error messages, and I was getting no
> > data.
> 
> No, you don't need to change anything.  I thought from the log message
> that you might have, since it shows UNIDATA|SPARE rather than just
> UNIDATA.   Interesting.
> 
> Apr 24 13:10:58 vortex graupl[1706]: Connection from graupl.uml.edu
> Apr 24 13:10:58 vortex graupl(feed)[1706]: Starting Up: 20010424131008.327
> TS_ENDT {{UNIDATA|SPARE,  "(^[A-OQ-X])|(^[YZ].[^HU])"}}
> Apr 24 13:10:58 vortex graupl(feed)[1706]: topo:  graupl.uml.edu
> UNIDATA|SPARE
> 
> I believe that the SPARE feedtype was used for testing purposes by
> Unidata, although I'm not sure about this.  The problem arose at v. 5.0.10
> of ldm when they removed the SPARE feedtype from the UNIDATA superset.
> Since the version of ldm you were running had SPARE as part of your
> UNIDATA request, whereas my ALLOW UNIDATA under v 5.0.10 and later didn't
> include SPARE because of the change in the software, this is where the
> incompatiblity arose.  Even though you didn't want SPARE feedtype or
> probably even knew there was such a thing.
> 
> The thing I don't understand is why this mismatch resulted in a cascade of
> RECLASS messages, instead of just a single RECLASS message.  The latter I
> have seen many times when connecting to an ldm server, but the former
> never.  Perhaps the RECLASS was considered unacceptable to the ldm server
> on graupl.  Did the RECLASS messages show up in your ldmd logs last week?
> 
> Tom
> 
> 
>