With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cewEntOperStatus
Cisco EnergyWise Ent Operation Status
1.3.6.1.4.1.9.9.683.1.6.1.18
This object indicates the operational status for the Cisco EnergyWise entity. If the cewEntAdminStatus is down(2), then cewEntOperStatus should be down(2). If cewEntAdminStatus is changed to up(1), then cewEntOperStatus should change to up(1), unless some error has occurred, then it should be in error(3) state.
Back to CISCO-ENERGYWISE-MIB MIB page.
IPHost Network monitor allows you to monitor cewEntOperStatus 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.