With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cswStackPowerType
csw Stack Power Type
1.3.6.1.4.1.9.9.500.1.3.1.1.6
This object indicates the topology of the power stack, that is, whether the switch is running in RING or STAR topology.
Back to CISCO-STACKWISE-MIB MIB page.
IPHost Network monitor allows you to monitor cswStackPowerType on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.