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Re: 20011008: IDD latencies at PSU (cont.)

"Arthur A. Person" wrote:
> 
> 
> Okay, ldm.meteo.psu.edu is supposed to be open now.  Let me know when
> testing is complete so we can protect it again.
> 
>                                Art.

Great!  Here's what I'm seeing so far:

traceroute ldm.meteo.psu.edu:
traceroute to ldm.meteo.psu.edu (128.118.28.12), 30 hops max, 38 byte
packets
 1  flra-n140 (128.117.140.252)  0.283 ms  0.229 ms  0.221 ms
 2  vbnsr-n2.ucar.edu (128.117.2.252)  0.871 ms  1.065 ms  0.717 ms
 3  internetr-n243-104.ucar.edu (128.117.243.106)  190.165 ms  252.456
ms  2.412 ms
 4  denv-abilene.ucar.edu (128.117.243.126)  1.862 ms  2.050 ms  3.208
ms
 5  kscy-dnvr.abilene.ucaid.edu (198.32.8.14)  13.187 ms  12.426 ms 
12.419 ms
 6  ipls-kscy.abilene.ucaid.edu (198.32.8.6)  22.175 ms  21.662 ms 
21.553 ms
 7  clev-ipls.abilene.ucaid.edu (198.32.8.26)  28.233 ms  28.116 ms 
27.986 ms
 8  abilene.psc.net (192.88.115.122)  31.127 ms  31.236 ms  31.704 ms
 9  penn-state.psc.net (198.32.224.66)  35.435 ms  35.531 ms  35.402 ms
10  * * *
11  ldm.meteo.psu.edu (128.118.28.12)  37.173 ms  55.206 ms  37.258 ms
12  ldm.meteo.psu.edu (128.118.28.12)  37.062 ms  36.466 ms  36.573 ms

Is the 10th hop due to a firewall?

These times look good.  If you'd like to see the current snapshot of the
complete netcheck log, ftp to pub/anne and get netcheck.log.  I could
set something up to keep that current - let me know if you'd like me to
do that.

So, this tells us that small packets, at least, are getting through
well. Currently, I have no clue as to why your other feeds are timely
but our feed is not.  This afternoon I will query my coworkers for
ideas. 

Just to confirm, you're seeing products *arriving* late, as opposed to
being filed late, is that correct?  Did you determine this via 'ldmadmin
watch'? 

I'll keep netcheck running as long as you and your system administrator
want to keep it open.  Let me know.  I'll be gone for 1.5 hours, leaving
in about 1/2 hour, FYI.   You can close the ports back up again whenever
you like.

Anne
-- 
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Anne Wilson                     UCAR Unidata Program            
address@hidden                 P.O. Box 3000
                                  Boulder, CO  80307
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Unidata WWW server       http://www.unidata.ucar.edu/
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