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Re: 19991004: loss of data stream
- Subject: Re: 19991004: loss of data stream
- Date: Mon, 4 Oct 1999 11:09:40 -0600 (MDT)
Pete,
I believe David is correct in that the problem is at your site. It's
could be an DNS problem, etc. Your network people aren't putting in a
firewall? I would contact your system admin, network people or you ISP
immediately. Here's the results of ldmpings and traceroutes.
Robb...
laraine.unidata.ucar.edu.rkambic> ldmping -i 5 -h atmos.albany.edu
Oct 04 17:02:15 State Elapsed Port Remote_Host
rpc_stat
Oct 04 17:02:15 RESPONDING 0.217664 388 atmos.albany.edu
Oct 04 17:02:20 RESPONDING 0.088309 388 atmos.albany.edu
Oct 04 17:02:25 RESPONDING 0.083009 388 atmos.albany.edu
Oct 04 17:02:30 RESPONDING 0.084932 388 atmos.albany.edu
^Claraine.unidata.ucar.edu.rkambic> traceroute atmos.albany.edu
traceroute to atmos.albany.edu (169.226.4.37), 30 hops max, 40 byte
packets
1 flr-n148.ucar.edu (128.117.148.3) 1 ms 0 ms 0 ms
2 * internetr-n2.ucar.edu (128.117.2.253) 1 ms 1 ms
3 den-edge-11.inet.qwest.net (205.169.250.9) 3 ms 3 ms 2 ms
4 den-edge-04.inet.qwest.net (205.171.16.169) 3 ms 2 ms 3 ms
5 den-core-01.inet.qwest.net (205.171.16.65) 3 ms 3 ms 3 ms
6 sfo-core-03.inet.qwest.net (205.171.5.35) 26 ms 27 ms 26 ms
7 sjo-core-01.inet.qwest.net (205.171.5.129) 28 ms 28 ms 27 ms
8 sjo-edge-05.inet.qwest.net (205.171.22.46) 28 ms 28 ms 28 ms
9 205.171.4.10 (205.171.4.10) 28 ms 29 ms 28 ms
10 sl-bb10-rly-6-0.sprintlink.net (144.232.9.13) 69 ms 68 ms 67 ms
11 sl-bb11-rly-9-0.sprintlink.net (144.232.0.46) 67 ms 68 ms 67 ms
12 at-bb1-dc-6-0-0.appliedtheory.net (144.232.7.174) 70 ms 68 ms 69 ms
13 at-bb1-nyc-1-0-0-T3.appliedtheory.net (169.130.16.5) 68 ms 67 ms 68
ms
14 at-gw1-alb-0-1-0-T3.appliedtheory.net (169.130.1.14) 76 ms 78 ms 79
ms
15 at-gw3-alb-0-0.appliedtheory.net (169.130.20.3) 105 ms 148 ms 413
ms
16 at-sunalb-1-0-T3.appliedtheory.net (169.130.23.6) 78 ms 79 ms 79 ms
17 169.226.13.2 (169.226.13.2) 79 ms 132 ms 79 ms
18 redwood.atmos.albany.edu (169.226.4.37) 79 ms * 88 ms
laraine.unidata.ucar.edu.rkambic> ldmping -i 5 -h waldo.afit.af.mil
Oct 04 17:03:58 State Elapsed Port Remote_Host
rpc_stat
Oct 04 17:04:02 ADDRESSED 3.690441 0 waldo.afit.af.mil RPC:
Unable to receive; errno = Connection reset by peer
Oct 04 17:04:22 NAMED 15.000494 0 waldo.afit.af.mil can't
contact portmapper: RPC: Timed out
Oct 04 17:04:30 ADDRESSED 3.648183 0 waldo.afit.af.mil RPC:
Unable to receive; errno = Connection reset by peer
laraine.unidata.ucar.edu.rkambic> ping waldo.afit.af.mil
waldo.afit.af.mil is alive
On Mon, 4 Oct 1999, Unidata Support wrote:
>
> ------- Forwarded Message
>
> >To: address@hidden,
> >To: address@hidden
> >cc: address@hidden
> >From: "David J. Knight" <address@hidden>
> >Subject: Re: loss of data stream
> >Organization: .
> >Keywords: 199910041551.JAA16725
>
> Peter,
> This suggests that there are network problems on af.mil
>
> I just did a traceroute to waldo.afit.af.mil
> and had problems getting there as well.
> I get as far as router-REEF1ATM0-0-1.wan.wpafb.af.mil (198.97.67.35)
> but all *'s after that! a ping -s waldo.afit.af.mil reports
> 100% package loss.
>
> I suggest you talk to your networking people.
>
> DAvid
>
> if you were in the .edu domain you could use our traceroute
> and ping facilities on our ldm web page http://www.atmos.albany.edu/ldm
> but I'm afraid I've had to restrict access to .edu sites due
> to abuse from other sites. However, I could open
> this up to you if you think it would help.>
> > David,
> >
> > I lost the entire ldm data stream Friday morning at 13:00Z and suspect the
> > problem is here on Wright-Patterson AFB, but don't understand the logistics
> > of the data flow enough to really nail it down. I can ping your sight
> > without problems, but when I run traceroute, I get the following:
> >
> > traceroute to redwood.atmos.albany.edu (169.226.4.37), 30 hops max, 40 byte
> > packets
> > 1 waldo.afit.af.mil (129.92.1.1) 1.303 ms 5.853 ms 1.12 ms
> > 2 129.92.92.92 (129.92.92.92) 8.007 ms 1.336 ms 1.234 ms
> > 3 router-reef2FastEthernet0-0-0.wan.wpafb.af.mil (198.97.67.22) 1.637 ms
> > 1.639 ms 1.583 ms
> > 4 * * *
> > 5 * * *
> > 6 * * *
> > 7 * * *
> > 8 * * *
> > 9 * * *
> > 10 * * *
> > 11 * * *
> > 12 * * *
> > 13 * * *
> > 14 * * *
> > 15 * * *
> > 16 * * *
> > 17 * * *
> > 18 * * *
> > 19 * * *
> > 20 * * *
> > 21 * * *
> > 22 * * *
> > 23 * * *
> > 24 * * *
> >
> > Any thoughts or suggestions?
> >
> > Peter J. Rahe
> > Superintendent, Meteorology Lab Operations
> > Air Force Institute of Technology
> > Wright-Patterson AFB OH
> > *address@hidden or address@hidden
> > *DSN 785-3636 x4646 COMM (937) 255-3636 x4646
> > Fax: DSN 785-2921 COMM (937) 255-2921
> >
> >
> >
>
> >From address@hidden Mon Oct 4 10:08:25 1999
> Received: from atmos.albany.edu (redwood.atmos.albany.edu [169.226.4.37])
> by unidata.ucar.edu (8.8.8/8.8.8) with ESMTP id KAA17099
> for <address@hidden>; Mon, 4 Oct 1999 10:08:25 -0600 (MDT)
> Organization: .
> Keywords: 199910041608.KAA17099
> Received: from oak.atmos.albany.edu (oak [169.226.4.39])
> by atmos.albany.edu (8.8.8+Sun/8.8.8) with ESMTP id QAA22656;
> Mon, 4 Oct 1999 16:08:16 GMT
> Received: (from knight@localhost)
> by oak.atmos.albany.edu (8.8.8+Sun/8.8.8) id QAA08933;
> Mon, 4 Oct 1999 16:08:14 GMT
> Date: Mon, 4 Oct 1999 16:08:14 GMT
> From: "David J. Knight" <address@hidden>
> Message-Id: <address@hidden>
> To: address@hidden, address@hidden
> Subject: Re: Data Loss
> Cc: address@hidden, address@hidden
> X-Sun-Charset: US-ASCII
>
>
> Hmm,
> We have ALLOW UNIDATA|FSL2 ^fujita\.afit\.af\.mil$
> in our ldmd.conf files and haven't changed this lately.
>
> In our log files I see:
>
> Oct 04 06:02:22 redwood rpc.ldmd[11706]: gethostbyaddr: failed for 129.92.9.62
> Oct 04 06:02:22 redwood rpc.ldmd[11706]: Denying connection from 129.92.9.62
>
> This is fujita, but reverse lookups are failing. This could
> be due to the network problems discussed before, or, perhaps
> there are problems with the DNS for your site.
>
> revnslookup 129.92.9.62
> *** redwood.atmos.albany.edu can't find 62.9.92.129.in-addr.arpa:
> Non-existent host/domain
>
> For now I will add an allow for 129.92.9.62 but I don't
> really like doing this. It is better to let DNS handle
> resolution of IP numbers rather than hardwiring them.
>
> Interestingly the network problems between af.mil and albany.edu
> seem to be intermittent since my ping to your site just came alive
> for awhile (and since these emails seem to be getting through ;-)
>
> btw, if you are having ldm problems please send
> it to address@hidden so that somebody else can
> cover it if I am unable.
>
> David
>
> >
> > David,
> >
> > After further investigation, I'm not sure the trouble with our loss of ldm
> > data is on our end. The following output says we're being denied access:
> >
> > > From the ldmd.log:
> > >
> > > Oct 04 15:23:29 fujita redwood[6220]: FEEDME(redwood.atmos.albany.edu): 7:
> > >
> > > Access denied by remote server
> > > Oct 04 15:23:59 fujita redwood[6220]: run_requester: 19991004142359.610
> > > TS_ENDT
> > > {{UNIDATA, ".*"}}
> > > Oct 04 15:23:59 fujita redwood[6220]: FEEDME(redwood.atmos.albany.edu): 7:
> > >
> > > Access denied by remote server
> > > Oct 04 15:24:29 fujita redwood[6220]: run_requester: 19991004142429.781
> > > TS_ENDT
> > > {{UNIDATA, ".*"}}
> > > Oct 04 15:24:31 fujita redwood[6220]: FEEDME(redwood.atmos.albany.edu): 7:
> > >
> > > Access denied by remote server
> > >
> > > Output from notifyme:
> > >
> > > Oct 04 15:04:23 notifyme[6255]: Starting Up: redwood.atmos.albany.edu:
> > > 19991004140423.628 TS_ENDT {{ANY, ".*"}}
> > > Oct 04 15:04:48 notifyme[6255]: NOTIFYME(redwood.atmos.albany.edu): RPC:
> > > Timed
> > > out
> > > Oct 04 15:10:18 notifyme[6255]: NOTIFYME(redwood.atmos.albany.edu): RPC:
> > > Timed
> > > out
> > > Oct 04 15:15:48 notifyme[6255]: NOTIFYME(redwood.atmos.albany.edu): RPC:
> > > Timed
> > > out
> > > Oct 04 15:17:13 notifyme[6255]: NOTIFYME(redwood.atmos.albany.edu): 7:
> > > Access
> > > denied by remote server
> > > Oct 04 15:17:39 notifyme[6255]: NOTIFYME(redwood.atmos.albany.edu): 7:
> > > Access
> > > denied by remote server
> > >
> > Peter J. Rahe
> > Superintendent, Meteorology Lab Operations
> > Air Force Institute of Technology
> > Wright-Patterson AFB OH
> > *address@hidden or address@hidden
> > *DSN 785-3636 x4646 COMM (937) 255-3636 x4646
> > Fax: DSN 785-2921 COMM (937) 255-2921
> >
> > >
> >
>
>
> ------- End of Forwarded Message
>
===============================================================================
Robb Kambic Unidata Program Center
Software Engineer III Univ. Corp for Atmospheric Research
address@hidden WWW: http://www.unidata.ucar.edu/
===============================================================================