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Re: 20000427: ldm/poor data reception at SMSU

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  • Subject: Re: 20000427: ldm/poor data reception at SMSU
  • Date: Thu, 27 Apr 2000 10:41:57 -0600 (MDT)
>Date:20000427
>Organization: SMSU PSU
>Keywords: 200004271538.e3RFceG00879 IDD delay

William and Jeff, 

From the traceroute you supplied to psu, it appears as if the problem
lies at psu.

Jeff, has there been a change to the router or switch that goes into

navierldm.meteo.psu.edu

From the traceroute supplied by smsu it looks as if a bottleneck occurrs
one hop from your LDM machine. If the router or switch has not been
changed, have you installed a firewall?

Jeff, would you please investigate w/your sys admin. It could greatly
enhance your machines performance.

By the way, what is the status of ihlseng.ugems.psu.edu ?


Thanks,

-Jeff
__________
Jeff Weber
Unidata/NWS-COMET Case Study Library
University Corp for Atmospheric Research

address@hidden
PH:303-497-8676   
URL--http://www.unidata.ucar.edu/staff/jweber
________________________________________________

On Thu, 27 Apr 2000, Unidata Support wrote:
> 
> 
> Hiya:
> 
> Um, the past month or so our data reception has gone to pot, especially
> for the HRS products.  ldmd.log reports lots of this
> 
> Apr 27 15:24:47 cirrus pqexpire[6480]: > Recycled  25091.330 kb/hr (  
> 7986.056 p
> rods per hour)
> Apr 27 15:24:48 cirrus navierldm[18776]: RECLASS: 20000427142448.808 
> TS_ENDT {{HDS,  ".*"}}
> Apr 27 15:24:48 cirrus navierldm[18776]: skipped: 20000427142332.434 
> (76.375 seconds)
> Apr 27 15:25:52 cirrus navierldm[18776]: RECLASS: 20000427142552.195 
> TS_ENDT {{HDS,  ".*"}}
> 
> pings and traceroutes to psu are not bad, although ping loses about 
> 10-15 % of packets during the heat of the day.
> 
> traceroute to navierldm.meteo.psu.edu (128.118.28.11), 30 hops max, 40 
> byte pack
> ets
>  1  MainBrain.smsu.edu (146.7.97.254)  1 ms  1 ms  1 ms
>  2  CowBox.smsu.edu (146.7.25.72)  2 ms  2 ms  2 ms
>  3  sp-r12-01-atm0-0-200.mo.more.net (150.199.235.249)  2 ms  8 ms  6 ms
>  4  springfield-2-atm10-0-0-205.mo.more.net (150.199.7.98)  3 ms  4 ms  3 
> ms
>  5  12.127.112.201 (12.127.112.201)  41 ms  34 ms  35 ms
>  6  gbr1-a31s1.sl9mo.ip.att.net (12.127.4.6)  66 ms  61 ms  55 ms
>  7  gbr3-p70.sl9mo.ip.att.net (12.122.1.209)  53 ms  49 ms  49 ms
>  8  gbr3-p20.wswdc.ip.att.net (12.122.2.81)  87 ms  82 ms  69 ms
>  9  gbr3-p80.n54ny.ip.att.net (12.122.2.165)  69 ms  69 ms  79 ms
> 10  gbr1-p100.n54ny.ip.att.net (12.122.1.150)  70 ms  66 ms  68 ms
> 11  ar1-a300s4.n54ny.ip.att.net (12.127.0.5)  84 ms  70 ms  71 ms
> 12  12.127.244.62 (12.127.244.62)  79 ms  92 ms  97 ms
> 13  penn-state-vbns.psc.net (198.32.224.66)  93 ms  119 ms  109 ms
> 14  Willard1-ATM9-0-0.1.gw.psu.edu (128.118.44.2)  107 ms  94 ms  107 ms
> 15  * * *
> 16  navier.meteo.psu.edu (128.118.28.2)  104 ms *  96 ms
> 
> 
> My product queue is 190M.
> 
> Pardon my lack of savviness on this, but I could use a few suggestions on 
> how to improve our reception.
> 
> Thanks.
> 
> Bill
> 
> 
>                  ________________________________
> 
> William T. Corcoran                 Southwest Missouri State University
> address@hidden            Springfield, Missouri 65804
> (417) 836-5781                      Department of Geography
>     http://cirrus.smsu.edu   for my view of the weather
> 
> 
> ------- End of Forwarded Message
> 
>