This fall we upgraded to NCM 7.4 and since that time the Comparison Critiera filters haven't worked completely as expected.
At that time we moved from a single stand-alone instance of NCM that managed devices managed by four different NPM pollers. We changed to a fully integrated NPM/NCM solution then, and now instead of NCM managing from one server it backs up & manages configs from all four pollers.
We receive change notifications for lines that NCM (I believe) is correctly configured to ignore. For example, I recently saw this "changed difference" as the only message coming from a particular Cisco switch:
I expected NCM's Comparison Criteria to have prevented this from showing up by the application of this line, which to me says "ignore anything before or after 2015 in the line":
A similar report from a second integrated NCM/NPM poller:
Since both contain "2015" I expect the regex to ignore them.
Is my understanding of this RegEx in the Comparison Critiera incorrect? It used to work in previous versions of NCM, but perhaps it works slightly differently in 7.4? Or perhaps having NCM integrated with NPM, but split across four pollers now, is causing something to break on one of those pollers?
Is there a Wizard that should be re-run to correct this problem?