With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccwbFiberNodeNBIfIndx
Cisco Cable WIDEBAND Fiber Node NB If Indx
1.3.6.1.4.1.9.9.479.1.9.1.3
This object represents the Narrowband Ifindex of the RF downstream channel which is part of the Fiber node configuation.
Back to CISCO-CABLE-WIDEBAND-MIB MIB page.
IPHost Network monitor allows you to monitor ccwbFiberNodeNBIfIndx on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.