[opennms-devel] Detecting anomalies in network traffic

[Ronny T. <in...@mc...>]

I have found some good resources in the internet about detecting anomalies in
traffic for example. I had the idea to implement a snmp-graph which do the same
like the links below:

  http://cricket.sourceforge.net/aberrant/rrd_hw.htm
  http://man-wiki.net/index.php/1:rrdcreate

i have created an RRA in datacollection-config.xml and a special
collection-package in collectd-configuration.xml.

<--- RRD-Tool example --->
  rrdtool create monitor.rrd --step 300 \
    DS:ifOutOctets:COUNTER:1800:0:4294967295 \
      RRA:AVERAGE:0.5:1:2016 \
      RRA:HWPREDICT:1440:0.1:0.0035:288:3 \
      RRA:SEASONAL:288:0.1:2 \
      RRA:DEVPREDICT:1440:5 \
      RRA:DEVSEASONAL:288:0.1:2 \
      RRA:FAILURES:288:7:9:5
<--- RRD-Tool example --->

After that the following error is logged in /var/log/opennms/daemon/output.log

<--- SNIP --->
  The following exception occured while validating field: _rraList of class:
  org.opennms.netmgt.config.common.Rrd: RRA:HWPREDICT:1440:0.1:0.0035:288does
  not match the required regular expression: "^RRA:(AVERAGE|MIN|MAX|LAST):.*$"
<--- SNIP --->

Is it possible that JRobin is not 100% the same as RRD?
Anyone some hints?

Thanks in advance
Ronny

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