With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccwbRFChannelEntry
Cisco Cable WIDEBAND RF Channel Entry
1.3.6.1.4.1.9.9.479.1.1.1
An entry provides a list of attributes for a single downstream RF channel per WCMTS entity. An entry in this table exists for each configured RF channel on the WCMTS entity that provides the wideband DOCSIS functionality. The index, entPhysicalIndex, used here is the physical index of the wideband controller card. Since RF channels are considered part of the Wideband controller card, hence entPhysicalIndex is used for associating RF channels.
Back to CISCO-CABLE-WIDEBAND-MIB MIB page.
IPHost Network monitor allows you to monitor ccwbRFChannelEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.