I have three identical routers with the same SNMP configuration.
I have been trying to add a standard SNMP sensor to monitor bandwidth usage etc.
One of the devices is working fine but the other 2 continue to give me a 223 error.
I have tried to do an SNMP walk on the two devices and can see results OK. On that limited basis it looks like the SNMP is 'working' but I do not understand why the sensor is reporting no such instance.
Woudl appreciate any suggestions on how to fix or troubleshoot this issue.