you would need to establish the snmp OID for this particular switch, so you know what value to pull from the switch's MIB.
or connect a MIB browser to the device, there is plenty of documentation on the topic.
what switch is it?
We have Cisco C2960 24TC-L.
I am able to get a list of OIDs from this device using snmpwalk. How do I know which OID is the one I need?