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20041220: Switch Change at NSF

Mike and Raleigh,

While the routes are I2, looking at latencies to and from ATM, 
could there be packet shaping which is throttling the amount of
data being allowed to transmit across the switch on p[ort 388?

Steve Chiswell
Unidata User Support


>From: Mike Schmidt <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200412201736.iBKHaECs025246

>Raleigh,
>
>It does;
>
>% traceroute atm.geo.nsf.gov
>traceroute to atm.geo.nsf.gov (198.181.231.53), 30 hops max, 40 byte packets
> 1  flra-n140 (128.117.140.252)  1 ms  1 ms  0 ms
> 2  gin-n243-80.ucar.edu (128.117.243.81)  1 ms  1 ms  1 ms
> 3  frgp-gw-1.ucar.edu (128.116.254.250)  2 ms  2 ms  2 ms
> 4  192.43.217.130 (192.43.217.130)  6 ms  2 ms  2 ms
> 5  kscyng-dnvrng.abilene.ucaid.edu (198.32.8.14)  13 ms  12 ms  12 ms
> 6  iplsng-kscyng.abilene.ucaid.edu (198.32.8.80)  33 ms  24 ms  38 ms
> 7  chinng-iplsng.abilene.ucaid.edu (198.32.8.76)  26 ms  26 ms  25 ms
> 8  nycmng-chinng.abilene.ucaid.edu (198.32.8.83)  46 ms  45 ms  46 ms
> 9  washng-nycmng.abilene.ucaid.edu (198.32.8.85)  59 ms  50 ms  64 ms
>10  dcne-abilene-oc48.maxgigapop.net (206.196.177.1)  50 ms  50 ms  50 ms
>11  arlg-so3-1-0.maxgigapop.net (206.196.178.41)  50 ms  50 ms  50 ms
>12  nsf-rtr.maxgigapop.net (206.196.177.138)  51 ms  51 ms  51 ms
>13  atm.geo.nsf.gov (198.181.231.53)  51 ms  50 ms  51 ms
>
>mike
>
>> From: "Raleigh Romine" <address@hidden>
>> Subject: Re: Switch Change at NSF 
>> 
>> Just to make sure: traceroute from your end goes via Abilene, right? 
>> 
>> Best,
>> 
>> Raleigh
>> 
>> P.S. Here's what happens from our end:
>> 
>> $ traceroute www.atd.ucar.edu
>> traceroute to linus.atd.ucar.edu (128.117.80.208), 64 hops max, 40 byte pack
> ets
>>  1  colima.nsf.gov (198.181.231.1)  0.512 ms  0.415 ms  0.308 ms
>>  2  arlg-nsf.maxgigapop.net (206.196.177.137)  1.415 ms  0.999 ms  0.931 ms
>>  3  dcne-so3-0-0.maxgigapop.net (206.196.178.42)  1.628 ms  1.213 ms  1.175 
> ms
>>  4  abilene-rtr.maxgigapop.net (206.196.177.2)  1.299 ms  1.241 ms  1.306 ms
>>  5  nycmng-washng.abilene.ucaid.edu (198.32.8.84)  5.550 ms  5.710 ms  5.524
>  ms
>>  6  chinng-nycmng.abilene.ucaid.edu (198.32.8.82)  25.538 ms  33.085 ms  25.
> 547 ms
>>  7  iplsng-chinng.abilene.ucaid.edu (198.32.8.77)  29.435 ms  29.453 ms  42.
> 630 ms
>>  8  kscyng-iplsng.abilene.ucaid.edu (198.32.8.81)  38.807 ms  95.903 ms  38.
> 647 ms
>>  9  dnvrng-kscyng.abilene.ucaid.edu (198.32.8.13)  53.066 ms  49.210 ms  49.
> 435 ms
>> 10  192.43.217.129 (192.43.217.129)  49.284 ms  49.610 ms  49.243 ms
>> 11  gin.ucar.edu (128.116.254.240)  50.241 ms  50.363 ms  52.122 ms
>> 12  flrb.ucar.edu (128.117.243.83)  50.599 ms  50.827 ms  50.433 ms
>> 13  linus.atd.ucar.edu (128.117.80.208)  50.450 ms  50.451 ms  50.415 ms
>
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