I monitoring the interface of a cisco 1841 router in a remote office. After a break of the connection or a reboot of the router, I have sometime the failure No such Name (SNMP-Fehler # 2). The only thing I can then do is, to delete the sensor and add it again. I have allready set the "snmp-server ifindex persist" command on the cisco router. The funny thing is, the new sensor has prober the same name then the old sensor. So I'm not understand why this failure appear.