Juniper ssg20 snmp communicate issue with Network Performance Monitor

Hi ,

I have an issue about juniper ssg20 snmp communicate with Network Performance Monitor.

I tried snmp,v2,v3  . When try to add node in NPM test fail.

- On juniper snmp enabled , comminutiy name set ok. Monitor ip ok for NPM

- On juniper interfaces enabled snmp

By the way I added my hp procurve switch for node on my NPM

Is there any step by step guide for this issue?