With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdxCmToCpeCmMacAddress
Cisco DOCSIS Cable Modem To Cpe Cable Modem Mac Address
1.3.6.1.4.1.9.9.116.1.3.8.1.1
The MAC address that uniquely identifies a cable modem that CPEs connects to.
Back to CISCO-DOCS-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cdxCmToCpeCmMacAddress 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.
