This article applies as of PRTG 24

I'm trying to monitor my Canon printers using SNMP, but I get No response (SNMP error # -2003). A basic SMTP sensor works fine. Both use the same strings. What should I check?


You need to set it to SNMP v1. It is also better to do use a custom advanced SNMP monitor. These settings work:

Sensor Channel #1 Name
Tray 1 Paper
Sensor Channel #1 OID
.1.3.6.1.2.1.43.8.2.1.10.1.2
Sensor Channel #1 Value Type
Gauge (signed integer, e.g. "-12", "120")
Sensor Channel #1 UnitSensor Channel #2
Enable
Sensor Channel #2 Name
Tray 2 Paper
Sensor Channel #2 OID
.1.3.6.1.2.1.43.8.2.1.10.1.3
Sensor Channel #2 Value Type
Gauge (unsigned Integer, e.g. "10", "120")
Sensor Channel #2 UnitSensor Channel #3
Enable
Sensor Channel #3 Name
Tray 3 Paper
Sensor Channel #3 OID
.1.3.6.1.2.1.43.8.2.1.10.1.4
Sensor Channel #3 Value Type
Gauge (signed integer, e.g. "-12", "120")
Sensor Channel #3 UnitSensor Channel #4
Enable
Sensor Channel #4 Name
Tray 4 Paper
Sensor Channel #4 OID
.1.3.6.1.2.1.43.8.2.1.10.1.5
Sensor Channel #4 Value Type
Gauge (signed integer, e.g. "-12", "120")
Sensor Channel #4 UnitSensor Channel #5
Enable
Sensor Channel #5 Name
Black Toner
Sensor Channel #5 OID
.1.3.6.1.2.1.43.11.1.1.9.1.1
Sensor Channel #5 Value Type
Gauge (signed integer, e.g. "-12", "120")
Sensor Channel #5 UnitSensor Channel #6
Enable
Sensor Channel #6 Name
Cyan Toner
Sensor Channel #6 OID
.1.3.6.1.2.1.43.11.1.1.9.1.2
Sensor Channel #6 Value Type
Gauge (signed integer, e.g. "-12", "120")
Sensor Channel #6 UnitSensor Channel #7
Enable
Sensor Channel #7 Name
Magenta Toner
Sensor Channel #7 OID
.1.3.6.1.2.1.43.11.1.1.9.1.3
Sensor Channel #7 Value Type
Gauge (signed integer, e.g. "-12", "120")
Sensor Channel #7 UnitSensor Channel #8
Enable
Sensor Channel #8 Name
Yellow Toner
Sensor Channel #8 OID
.1.3.6.1.2.1.43.11.1.1.9.1.4
Sensor Channel #8 Value Type
Gauge (signed integer, e.g. "-12", "120")
Sensor Channel #8 UnitSensor Channel #9
Enable
Sensor Channel #9 Name
Waste Toner
Sensor Channel #9 OID
.1.3.6.1.2.1.43.11.1.1.9.1.5
Sensor Channel #9 Value Type
Gauge (signed integer, e.g. "-12", "120")
Sensor Channel #9 UnitSensor Channel #10
Enable
Sensor Channel #10 Name
Total Pages Printed
Sensor Channel #10 OID
.1.3.6.1.2.1.43.10.2.1.4.1.1
Sensor Channel #10 Value Type
Gauge (signed integer, e.g. "-12", "120")
Sensor Channel #10 Unit


Disclaimer:
The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.