Re: 19991004: loss of data stream

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/
===============================================================================