I am trying to setup monitoring of our BCM 450 PBX. It is running Linux OS. The Auto discovery found ping, http, IMAP and 2 LANs. When I try and add a sensor for CPU usage (or anything else) using v1 SNMP it gives an error saying "No Such Name (SNMP error # 2)" I have made certain that the PRTG server ip-address is allowed to connect to BCM and have made sure that the Community strings on PRTG server and BCM are the same. I have tried using v1 and v2c SNMP versions, but get the same error message. I have done an SNMPWalk fron the PRTG server and I see OIDs returned.