In order for to Monitor a Cisco Router or Switch using SMNP with a 3rd party software like MTRG we need to enable SNMP on the device and set a SNMP String.
To do it follow the steps below:
Log in to the router and enter configuration mode:
Router#configure terminal
Enable SMNP:
Router(config)#snmp-server community public RO
Router(config)#snmp-server community private RW
Router(config)#exit
Then save the changes:
Router#write memory
View SNMP command :
Router# sh snmp
Chassis: FHK1215F41P
2411 SNMP packets input
0 Bad SNMP version errors
0 Unknown community name
0 Illegal operation for community name supplied
0 Encoding errors
2819 Number of requested variables
0 Number of altered variables
178 Get-request PDUs
2233 Get-next PDUs
0 Set-request PDUs
0 Input queue packet drops (Maximum queue size 1000)
2411 SNMP packets output
0 Too big errors (Maximum packet size 1500)
18 No such name errors
0 Bad values errors
0 General errors
2411 Response PDUs
0 Trap PDUs
To Remove \ Disable SNMP
Router(config)#no snmp-server community public RO
Router(config)#no snmp-server community private RW