[mrtg] Flat-lining W/O Rate Drop or Outage

[Jeff Hill]

Why would MRTG show a 64k ISDN connection flat-lining for short periods
at rates of 2, 4 or 6kbps? There is no outage during these periods. 

My provider, PSInet, has a monitoring program that never shows these
flat-line periods (program vendor unknown). It is, however, set to check
only every 15 minutes rather than every 5 minutes as MRTG is configured.
Nonetheless, when MRTG shows a flatline for an hour or two, their
program should show much the same thing.

Lastly, PSInet claims that bandwidth should be increased when average
usage reaches 50%. I'm curious if anyone else has any experience in
reasonable band usage.

Graphs available at:
http://www.hronline.com/acct_services/mrtg/205.233.215.1.16.html

Using MRTG 2.5.4 on Ascend Pipeline 50 Firmware +4.6C+
Debian GNU/Linux 2.1 

Thanks in advance for any advice/direction.

Jeff Hill


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