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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
Joe VanAndel wrote: > > OK, so you are saying that all communication is via RPC, and that first > LDM tries to use port 388, and then tries to get a dynamic port thru the > portmapper. Yes. > > Sorry if I wasn't clear : > spol-nssl is in Norman, for a field project. It gets LDM feeds from > linus.atd.ucar.edu > moonbow.rap.ucar.edu > eldm.fsl.noaa.gov > > Only the connection to moonbow shows the intermittent errors about RPC > failures. Then, I have another misunderstanding. I thought this only occurred when you first started the ldm. Is it happening otherwise? > > Yes, forward and reverse name lookup works to moonbow. If the problem > re-occurs, I'll use moonbow's IP address, rather than its name. > > > > Here's the result: > $ ldmping moonbow.rap.ucar.edu > May 09 19:22:22 State Elapsed Port Remote_Host > rpc_stat > May 09 19:22:22 RESPONDING 0.050303 388 moonbow.rap.ucar.edu > May 09 19:22:47 RESPONDING 0.020030 388 moonbow.rap.ucar.edu > May 09 19:23:12 RESPONDING 0.020033 388 moonbow.rap.ucar.edu > > I'm assuming the state can be "RESPONDING", even if the portmapper is > unreachable. Yes, it can, as it will go through port 388. I just made a request for a feed from moonbow on my own machine and did not have the problem regarding contacting the moonbow's portmapper. Is this keeping you from getting data? I have an email in to someone that works with moonbow to discuss their configuration. Anne -- *************************************************** Anne Wilson UCAR Unidata Program address@hidden P.O. Box 3000 Boulder, CO 80307 ---------------------------------------------------- Unidata WWW server http://www.unidata.ucar.edu/ ****************************************************