Using wildcards or regular expressions in alarm filters

Using wildcard expressions

The example below shows a filter for elements matching a particular wildcard expression.

Using regular expressions

If you want to filter alarms using a regular expression:

1. When creating a filter, select the Matches Regular Expression operator.

2. Specify a regular expression.

Regular expression syntax

You can use any regular expression.

For more information on how to construct regular expressions, here are a few interesting links:

• Regular Expression Language - Quick Reference

• RegExLib.com Regular Expression Cheat Sheet

Note

• DataMiner always wraps a regular expression in ^( and )$. This means that the expression must match the entire string.
• The checks are executed using the invariant culture and ignoring case.

Regular expression examples

London.*

• Matches ...

  • London-Amplifier-1

  • London-Amplifier-2

• Does not match ...

  • NewYork-Amplifier-1

  • East-London-Amplifier

  • Paris-Amplifier

(London|NewYork)-Amplifier-[0-9]+

• Matches ...

  • London-Amplifier-1

  • NewYork-Amplifier-5

• Does not match ...

  • Paris-Amplifier-7

  • London-Amplifier-XYZ

MAC-^([0-9A-F]{2}[-]){5}([0-9A-F]{2})

• Matches ...

  • MAC-A0-12-EF-DE-A1-C3

• Does not match ...

  • MAC-99-99-99-99-99