Searched and found no explanation, after a great deal of trial and error discovered the method to alert based upon the value of a single row within a Custom Table Poller. Maybe I missed where it was posted, but here is the solution I found for anyone else trying to alert on 1 specific row of a table:
- Under Trigger Conditions: Select 'Custom Table Poller Current Status' for the 'I want to alert on'
- Next you must speciiy 'Only following set of objects (Show List)' under the heading 'The scope of alert'. The criteria 'Custom Table Poller Status ' and 'Row ID' or 'Row Label' and an appropriate value must be specified. Use the show list link to see how many hits you get.
- Specify any other device limiters as appropriate.
- Under the heading 'Actual trigger condition' the 'Custom Table Poller Status' fields for 'Current Value' and 'Current Numeric Value' will now be consistent with the values for the row specified under the 'The scope of alert'.
This was extremely useful in setting up an alert to check Row 6 for a numeric value of 9 (enumerated value of 'active') against an ASA Failover Custom Table Poller as mentioned elsewhere on thwack