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 Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated.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.
Hi Doug, Manuel, et. al., re: >We're currently having connectivity issues between ECMWF (tigge- >ldm.ecmwf.int) and NCAR (dsspub.ucar.edu), CMA (tigge-cma-ncar.cma.gov.cn) >and NCAR (dsspub.ucar.edu), and ECMWF (tigge-ldm.ecmwf.int) and >Brazil ( tigge-ldm.cptec.inpe.br ). If you have any insight into the >problem, it would be greatly appreciated. While I don't have any insight into what is causing the problem, I can offer my hunch: it is a routing problem in NLR. I say this because a traceroute to a Unidata user site hangs at the NLR node in Denver: traceroute tornado.geos.ulm.edu traceroute to tornado.geos.ulm.edu (198.202.242.22), 30 hops max, 40 byte packets 1 flra-n140 (128.117.140.253) 1 ms 0 ms 0 ms 2 tcom-gs-1-n243-80.ucar.edu (128.117.243.85) 1 ms 1 ms 1 ms 3 nlrb-frgp.frgp.net (192.43.217.113) 1 ms 1 ms 2 ms 4 frgp-nlr.frgp.net (192.43.217.138) 5 ms 2 ms 13 ms 5 hous-denv-82.layer3.nlr.net (216.24.186.27) 31 ms 31 ms 31 ms <hang> If I knew who to call, I would get on the horn to NLR (or I2?) to report the problem. Cheers, Tom >-ECMWF has been unable to ldmping or retrieve data from NCAR's ldm >server since >~July 10. No recorded changes have been made to NCAR's server during >this period (Although I did restart ldm multiple times >yesterday to see if that would help out). > >>> I'm trying to ldmping dsspub.ucar.edu I get: >>> Jul 20 20:47:17 INFO: State Elapsed Port Remote_Host >>> rpc_stat >>> Jul 20 20:47:17 INFO: Resolving dsspub.ucar.edu to 192.43.244.212 >>> took 0.119353 seconds >>> Jul 20 20:47:27 ERROR: H_CLNTED 9.999577 388 dsspub.ucar.edu >>> select: RPC: Timed out > >ECMWF see's the same ldmping problems to Brazil (but has been able to >retrieve data).: > >> ldm@tigge-ldm:~/etc> ldmping tigge-ldm.cptec.inpe.br >> Jul 21 14:06:20 INFO: State Elapsed Port Remote_Host >> rpc_stat >> Jul 21 14:06:20 INFO: Resolving tigge-ldm.cptec.inpe.br to >> 150.163.141.243 took 0.014087 seconds >> Jul 21 14:06:30 ERROR: H_CLNTED 10.002102 388 tigge- >> ldm.cptec.inpe.br select: RPC: Timed out > > >CMA has trouble when attempting to ldmping NCAR, but can retrieve data. >ldmping dsspub.ucar.edu >Jul 21 01:28:59 INFO: State Elapsed Port Remote_Host >rpc_stat >Jul 21 01:28:59 INFO: Resolving dsspub.ucar.edu to 192.43.244.212 took >0.003704 seconds >Jul 21 01:29:09 ERROR: H_CLNTED 9.999708 388 dsspub.ucar.edu >select: RPC: Timed out > >I performed an ldmping test from dssingest.ucar.edu to dsspub.ucar.edu >and get a similar error message, >yet have no problem retrieving data from dsspub: > >bash:ldmping dsspub >Jul 21 14:37:08 INFO: State Elapsed Port >Remote_Host rpc_stat >Jul 21 14:37:08 INFO: Resolving dsspub to 192.43.244.212 took 0.01023 >seconds >Jul 21 14:37:18 ERROR: SVC_UNAVAIL 10.001001 0 dsspub >h_clnt_create(dsspub): Timed out while creating connection > >I have no problem ldmpinging dssingest, ECMWF, CMA, or Brazil from >dsspub: > >bash:ldmping dssingest.ucar.edu >Jul 21 14:40:27 INFO: State Elapsed Port >Remote_Host rpc_stat >Jul 21 14:40:27 INFO: Resolving dssingest.ucar.edu to 192.43.244.213 >took 0.001078 seconds >Jul 21 14:40:27 INFO: RESPONDING 0.004333 388 dssingest.ucar.edu > > >Doug > > >On Jul 21, 2009, at 8:11 AM, Manuel Fuentes wrote: > >> Hi Alex, >> >> We seem to still have problems. >> >> ldm@tigge-ldm:~/etc> ldmping mopora.cptec.inpe.br >> Jul 21 14:05:36 INFO: State Elapsed Port Remote_Host >> rpc_stat >> Jul 21 14:05:36 INFO: Resolving mopora.cptec.inpe.br to >> 150.163.141.243 took 0.149712 seconds >> Jul 21 14:05:45 ERROR: ADDRESSED 9.542402 0 >> mopora.cptec.inpe.br RPC: Timed out >> >> >> ldm@tigge-ldm:~/etc> ldmping tigge-ldm.cptec.inpe.br >> Jul 21 14:06:20 INFO: State Elapsed Port Remote_Host >> rpc_stat >> Jul 21 14:06:20 INFO: Resolving tigge-ldm.cptec.inpe.br to >> 150.163.141.243 took 0.014087 seconds >> Jul 21 14:06:30 ERROR: H_CLNTED 10.002102 388 tigge- >> ldm.cptec.inpe.br select: RPC: Timed out >> >> I'm puzzled because we don't miss data from CPTEC since 14th July >> (we miss 1 field for one cycle). Perhaps we manage to get the data >> via other archive centers. Do other Archive Centres (Doug, Xiaofeng >> Bian) have the same problems with CPTEC's LDM ? >> >> >> >> Cheers, >> Manuel >> >> >> Alex Almeida Fernandes wrote: >>> Hi Manuel, >>> Would you, please, do a ldmping on mopora.cptec.inpe.br <http://mopora.cpte > c.inpe.br >>> >? >>> We're still trying to figure out the possible problem in our link. >>> Again, we apologize for the inconvenience. >>> Thanks, >>> Alex >>> 2009/7/15 Manuel Fuentes <address@hidden <mailto:Manuel.Fuentes@e > cmwf.int >>> >> >>> Hi Waldenio. >>> I think your LDM is still unreachable from our machine: >>> ldmping tigge-ldm.cptec.inpe.br <http://tigge-ldm.cptec.inpe.br> >>> Jul 15 21:18:57 INFO: State Elapsed Port Remote_Host >>> rpc_stat >>> Jul 15 21:18:57 INFO: Resolving tigge-ldm.cptec.inpe.br >>> <http://tigge-ldm.cptec.inpe.br> to 150.163.141.243 took 0.007823 >>> seconds >>> Jul 15 21:19:09 ERROR: NAMED 12.254987 0 >>> tigge-ldm.cptec.inpe.br <http://tigge-ldm.cptec.inpe.br> can't >>> contact portmapper: RPC: Timed out >>> Could you, please, include Baudouin in your e-mails ? I'll be away >>> for some days... >>> Cheers, >>> Manuel >>> Waldenio wrote: >>> Hello Manuel, >>> Are you receiving the CPTEC's Tigge data ? I cant see the >>> cptec >>> on the ldm statistics page on the ecmwf machines... >>> Thanks, >>> Waldenio. > Cheers, Tom -- +----------------------------------------------------------------------------+ * Tom Yoksas UCAR Unidata Program * * (303) 497-8642 (last resort) P.O. Box 3000 * * address@hidden Boulder, CO 80307 * * Unidata WWW Service http://www.unidata.ucar.edu/* +----------------------------------------------------------------------------+