With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdxCmtsServiceExtTable
Cisco DOCSIS Cmts Service Ext Table
1.3.6.1.4.1.9.9.116.1.1.3
The list contains the additional attributes of a single Service ID that provided by docsIfCmtsServiceEntry.
Back to CISCO-DOCS-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cdxCmtsServiceExtTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.