I was wondering if Solarwinds have Juniper EX virtual chassis monitoring on their roadmap. Currently NPM will monitor the Virtual Chassis master switch but will not detect when a virtual chassis member goes offline. This means we have had to set up SNMP alerts to alert the team when a "linecard" goes offline as the Solarwinds screen shows all is ok.
NPM has done some great work lately on Juniper integration but I would argue that this is the most important aspect of switch monitoring within the Juniper enterprise and it would be a massive bonus to your Juniper enterprise customers if this feature was added in the near future.