[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[LDM #CGE-685224]: Texas Tech connection to idd

This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.

  • Subject: [LDM #CGE-685224]: Texas Tech connection to idd
  • Date: Thu, 14 Dec 2017 09:31:32 -0700
Bruce,

I drove your email into our support tracking system so that others might 
benefit and to keep a permanent record.

BTW, copy-and-paste text is easier for us to read than screenshots.

The LDM log messages and ldmping(1) output indicate a failure to connect to the 
LDM on idd.unidata.ucar.edu due to connection resets. This usually indicates 
that there's no server (LDM) listening on port 388, which is extremely unlikely 
because the entire IDD community would be screaming.

It's more likely that something between the two LDM-s is preventing the 
connection. Possibilities include firewalls and intrusion detection systems. 
One way to test the ability to create an LDM-like TCP connection is with the 
telnet(1) utility:

    telnet idd.unidata.ucar.edu 388

This will fail, in which case you should show it to your network administrator 
as proof that something is very wrong with the network configuration.

Please keep us apprised.

> I've been trying to troubleshoot a LDM connection problem (occurred about
> 13/07Z) between Texas Tech's meso-file1.tosm.ttu.edu and
> idd.unidata.ucar.edu.
> 
> Not really sure what's happening here.  meso-file1 is still receiving ldm
> data from other sources and mesonet data is still being received at other
> sources like RAL.
> 
> Still could be a problem on Tech's end, but would you mind looking into the
> issue?  I'll attach a snagit of the ldmd.log file just in case it might
> help in some way.

> Thought I better attach the results of an ldmping command to
> idd.unidata.ucar.edu as well.

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: CGE-685224
Department: Support LDM
Priority: Normal
Status: Closed
===================
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata 
inquiry tracking system and then made publicly available through the web.  If 
you do not want to have your interactions made available in this way, you must 
let us know in each email you send to us.