[ANSS-netops] rtp2rtpd question

Philip Crotwell crotwell at seis.sc.edu
Tue Dec 14 16:34:03 UTC 2010


I have not had much experience with rtp2rtpd except between two
computers on the same local subnet, so I haven't seen this exact
problem. However, we have seen lots of cases where a link to a single
station (cell modem) goes down and comes back up, but the rtp
connection doesn't. Sometimes it comes back eventually (hours to days)
and sometimes we have to go out and push the power button. We also end
up with data gaps even in cases of very short outages that should not
exceed the local buffer. Lots of weirdness I just don't understand.

Any chance your issue was with the station to rtpd link instead of the
rtp2rtpd link? Not that I have anything useful in that case other than
sympathy but at least you aren't alone. :(

Philip

On Tue, Dec 14, 2010 at 11:23 AM,  <mwithers at memphis.edu> wrote:
>
> We have rtpd running at a remote node and rtp2rtpd on that node transfering
> the data to a central site via private microwave.  Inclement weather
> frequently disrupts comm over the microwave link.  During a recent
> disruption, when comm was restored, rtp2rtpd was successfully transfering
> data for some stations but not others. So I stopped and restarted rtp2rtpd
> and data transmission was restored.  I don't see anything significant in
> the logs to suggest what the problem was.  Has anyone running rtp2rtpd
> seen this sort of thing before and if so, what did you do to correct it
> so that you resume data transmission without manual intervention?
>
> Mitch
>
> Center for Earthquake Research and Information (CERI)
> University of Memphis                Ph: 901-678-4940
> Memphis, TN 38152                   Fax: 901-678-4734
>
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