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20050804: ldm_clnt.c:256: Couldn't connect to LDM 6 on atm.geo.nsf.gov (cont.)



>From: David Yeung <address@hidden>
>Organization: Hong Kong University of Science and Technology
>Keywords: 200508040403.j7443Pjo013955 IDD atm.geo.nsf.gov

Hi David,

>Here is the traceroute output from our LDM server:
>
>address@hidden root]# traceroute atm.geo.nsf.gov
>traceroute to atm.geo.nsf.gov (198.181.231.53), 30 hops max, 38 byte packets
>1 cis7k1-n28 (143.89.115.254) 1.553 ms 1.350 ms 1.163 ms
>2 202.40.138.120 (202.40.138.120) 1.890 ms 2.603 ms 0.741 ms
>3 c7603 (202.40.138.254) 1.597 ms 1.919 ms 2.144 ms
>4 * 202.40.221.69 (202.40.221.69) 12.838 ms 11.001 ms
>5 202.40.221.130 (202.40.221.130) 12.616 ms 16.375 ms 16.782 ms
>6 218.189.110.5 (218.189.110.5) 14.813 ms 15.164 ms 14.697 ms
>7 210.0.247.3 (210.0.247.3) 10.463 ms 22.077 ms 21.947 ms
>8 sl-gw10-hk-9-4.sprintlink.net (203.222.39.9) 89.608 ms 203.222.160.113
>(203.222.160.113) 76.292 ms sl-gw10-hk-9-4.sprintlink.net (203.222.39.9)
>74.518 ms
>9 sl-bb21-hk-15-3.sprintlink.net (203.222.38.55) 79.409 ms 82.376 ms
>75.826 ms
>10 sl-bb21-tok-14-0.sprintlink.net (203.222.33.15) 61.668 ms 65.922 ms
>64.839 ms
>11 sl-bb21-stk-5-0.sprintlink.net (144.232.20.179) 174.535 ms 168.423 ms
>184.278 ms
>12 sl-bb26-pen-12-0.sprintlink.net (144.232.20.162) 254.589 ms 347.060
>ms 260.797 ms
>13 sl-bb27-pen-15-0.sprintlink.net (144.232.16.94) 259.952 ms 247.361 ms
>276.059 ms
>14 sl-gw42-pen-9-0.sprintlink.net (144.232.5.82) 269.409 ms 263.146 ms
>257.246 ms
>15 sl-natio20-1-0-0.sprintlink.net (160.81.65.26) 240.453 ms 237.519 ms
>234.385 ms
>16 63.173.108.130 (63.173.108.130) 232.714 ms 243.064 ms 235.314 ms
>17 atm.geo.nsf.gov (198.181.231.53) 238.773 ms 236.831 ms 232.965 ms

This shows that the connection from your machine to atm.geo.nsf.gov
does, in fact, go over the commodity internet.  Because of this, you
will not be allowed to feed from atm.geo.nsf.gov (reasons provided
in the previous email).

>And here is our ldmd.conf:
>request DDPLUS|IDS ".*" atm.geo.nsf.gov PRIMARY
>request DDPLUS|IDS ".*" unidata2.ssec.wisc.edu ALTERNATE

Please change your request from atm.geo.nsf.gov to idd.unidata.ucar.edu.
We will contact you when there is a different East coast site you can
feed from over commodity internet.

>We have been using atm.geo.nsf.gov as our primary server for pretty long
>time.

Yes, we realize that.  The restrictions on what IDD connections will
be allowed at NSF was governed by the volume of data that atm.geo.nsf.gov
is relaying.  If/when the NSF I2 connection goes down, all connections
used to switch over to commodity internet.  We are now at the point where
this used all of the NSF bandwidth virtually preventing anyone at NSF
from getting work accomplished.  The (correct) decision was made to only
support data relay on I2 at NSF, so you will no longer be allowed to
feed from atm when your connections come over commodity internet.

>Please let me know if you see any problem.

All you need to do is change your PRIMARY feed site to idd.unidata.ucar.edu.

Cheers,

Tom
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