Here are traceroutes from idd.aos.wisc.edu to conduit.ncep.noaa.gov and ncepldm4.woc.noaa.gov taken at 17:17 UTC, right in the middle of the 18 UTC GFS lag spike today.
[ldm@idd ~/etc]$ traceroute conduit.ncep.noaa.gov
traceroute to conduit.ncep.noaa.gov (140.90.101.42), 30 hops max, 60 byte packets
1 r-cssc-b280c-1-core-vlan-510-primary.net.wisc.edu (144.92.130.3) 0.833 ms 0.819 ms 0.855 ms
2 internet2-ord-600w-100G.net.wisc.edu (144.92.254.229) 18.077 ms 18.095 ms 18.067 ms
3 et-7-0-0.115.rtr.wash.net.internet2.edu (198.71.45.57) 35.125 ms 35.278 ms 35.261 ms
4 198.71.45.228 (198.71.45.228) 35.378 ms 35.368 ms 35.335 ms
5 ae0.clpk-core.maxgigapop.net (206.196.178.81) 36.401 ms 36.408 ms 36.284 ms
6 noaa-rtr.maxgigapop.net (206.196.177.118) 36.523 ms 36.640 ms 36.411 ms
7 140.90.111.36 (140.90.111.36) 68.769 ms 52.236 ms 52.210 ms
8 140.90.76.69 (140.90.76.69) 36.602 ms 36.503 ms 36.827 ms
9 * * *
10 * * *
...
[ldm@idd ~/etc]$ traceroute ncepldm4.woc.noaa.gov
traceroute to ncepldm4.woc.noaa.gov (140.172.17.205), 30 hops max, 60 byte packets
1 r-cssc-b280c-1-core-vlan-510-primary.net.wisc.edu (144.92.130.3) 0.838 ms 0.847 ms 0.822 ms
2 internet2-ord-600w-100G.net.wisc.edu (144.92.254.229) 18.513 ms 18.506 ms 18.484 ms
3 ae0.3454.core-l3.frgp.net (192.43.217.223) 40.245 ms 40.204 ms 40.123 ms
4 noaa-i2.frgp.net (128.117.243.11) 43.617 ms 43.544 ms 43.699 ms
5 2001-mlx8-eth-1-2.boulder.noaa.gov (140.172.2.18) 40.960 ms 40.951 ms 41.058 ms
6 mdf-rtr-6.boulder.noaa.gov (140.172.6.251) 46.516 ms 40.962 ms 40.876 ms
7 * * *
8 * * *
...
--
Pete Pokrandt - Systems Programmer
UW-Madison Dept of Atmospheric and Oceanic Sciences
608-262-3086 - address@hidden
From: address@hidden <address@hidden> on behalf of Carissa Klemmer - NOAA Federal <address@hidden>
Sent: Thursday, September 24, 2015 10:36 AM
To: address@hidden
Cc: Bentley, Alicia M; Daes Support; address@hidden
Subject: Re: [conduit] How's your GFS?
Mike,
Can you provide what server you are coming from. I know your range, but I need to provide to the helpdesk what is primary right now so they can trace back.