I am trying to set some OID but seems that it gives below error "No Such Instance currently exists at this OID" which should not be the case as i am able to get/walk same OID. so its present.
root@m-snm:~# snmpwalk -v 2c -c public 10.2.4.19 .1.3.6.1.2.1.2.2.1.7.3
iso.3.6.1.x.x.x.x.x.7.3 = INTEGER: 1
root@m-snm:~# snmpset -v 2c -c public 10.2.4.19 .1.3.6.1.2.1.2.2.1.7.3 i 2
iso.3.6.1.x.x.x.x.x.7.3 = **No Such Instance currently exists at this OID**
root@m-snm:~# snmpget -v 2c -c public 10.2.4.19 .1.3.6.1.2.1.2.2.1.7.3
iso.3.6.1.x.x.x.x.x.7.3 = INTEGER: 1
Is it the permission issue ? Or i am not allowed to write ? or the field itself is not writable ? how can check what field are r/w and what are readonly