Re: 20010924: UCAR network slowness?

Unidata Support wrote:
> 
> >To: <address@hidden>
> >From: "Arthur A. Person" <address@hidden>
> >Subject: UCAR network slowness?
> >Organization: UCAR/Unidata
> >Keywords: 200109242109.f8OL9L111599
> 
> Hi...
> 
> Our data feed from motherlode is running an hour behind... other feeds
> from ssec, WSI, etc... appear to be normal.  Here's a traceroute to
> motherlode:
> 
> [root@ldm person]# /usr/sbin/traceroute motherlode.ucar.edu
> traceroute to motherlode.ucar.edu (128.117.13.119), 30 hops max, 38 byte
> packets
>  1  128.118.28.1 (128.118.28.1)  52.081 ms  0.500 ms  0.478 ms
>  2  Willard1-FastEthernet11-1-0.gw.psu.edu (146.186.163.1)  1.194 ms
> 1.293 ms  1.165 ms
>  3  Telecom2-ATM3-0-0.2.gw.psu.edu (172.30.255.78)  1.551 ms  2.340 ms
> 1.999 ms
>  4  198.32.224.253 (198.32.224.253)  5.950 ms  7.123 ms  7.057 ms
>  5  abilene-psc.abilene.ucaid.edu (192.88.115.121)  9.517 ms  8.940 ms
> 8.891 ms
>  6  198.32.8.25 (198.32.8.25)  41.772 ms  17.248 ms  14.748 ms
>  7  198.32.8.5 (198.32.8.5)  24.685 ms  25.395 ms  24.609 ms
>  8  198.32.8.13 (198.32.8.13)  34.626 ms  35.732 ms  35.740 ms
>  9  ncar-abilene.ucar.edu (128.117.243.125)  415.640 ms  406.267 ms
> 429.218 ms
> 10  vbnsr-n243-104.ucar.edu (128.117.243.105)  415.293 ms  417.777 ms
> 429.192 ms
> 11  mlrb-n2.ucar.edu (128.117.2.254)  409.624 ms  397.313 ms  403.283 ms
> 12  motherlode.ucar.edu (128.117.13.119)  376.145 ms  399.737 ms  414.046
> ms
> 
> Any ideas on what's going on?
> 
>                                  Thanks.
> 
>                                    Art.
> 
> Arthur A. Person
> Research Assistant, System Administrator
> Penn State Department of Meteorology
> email:  address@hidden, phone:  814-863-1563

Hi Art,

motherlode is running on time.  However, University of Washington is
also reporting long latencies.  We're doing traceroutes from motherlode
to a variety of sites.  On Abilene, times to Texas are good, times to
Utah, Washington, and the East appear to be bad.  Here's the traceroute
to your site:

motherlode.ucar.edu% traceroute ldm.meteo.psu.edu
traceroute to ldm.meteo.psu.edu (128.118.28.12), 30 hops max, 40 byte
packets
 1  mlra-n13 (128.117.13.253)  0.385 ms  0.240 ms  0.316 ms
 2  vbnsr-n2 (128.117.2.252)  1.171 ms  0.340 ms  0.478 ms
 3  internetr-n243-104 (128.117.243.106)  0.692 ms  0.461 ms  0.474 ms
 4  denv-abilene (128.117.243.126)  248.643 ms  224.281 ms  233.589 ms
 5  kscy-dnvr.abilene.ucaid.edu (198.32.8.14)  289.606 ms  305.312 ms 
285.545 ms
 6  ipls-kscy.abilene.ucaid.edu (198.32.8.6)  271.494 ms  324.436 ms 
329.555 ms
 7  clev-ipls.abilene.ucaid.edu (198.32.8.26)  309.116 ms  375.558 ms 
319.727 ms
 8  abilene.psc.net (192.88.115.122)  263.412 ms  312.156 ms  278.932 ms
 9  penn-state.psc.net (198.32.224.66)  252.412 ms  291.249 ms  238.552
ms
10  * * *
11  * * *
12  * * *
13  * * *

This traceroute never completed - after some time I killed it. The
Abilene times are relatively slow - maybe latencies have been
accumulating for some time.  And, is something going on on your campus?

Anne

-- 
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Anne Wilson                     UCAR Unidata Program            
address@hidden                 P.O. Box 3000
                                  Boulder, CO  80307
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