With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
docsDevFilterLLCStatus
DOCSIS Device Filter LLC Status
1.3.6.1.2.1.69.1.6.2.1.2
Controls and reflects the status of rows in this table. There is no restriction on changing any of the associated columns for this row while this object is set to active. Specifying only this object (with the appropriate index) on a CM is sufficient to create a filter row that matches all inbound packets on the ethernet interface and results in the packets being discarded. docsDevFilterLLCIfIndex (at least) must be specified on a CMTS to create a row.
Back to DOCS-CABLE-DEVICE-MIB MIB page.
IPHost Network monitor allows you to monitor docsDevFilterLLCStatus on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.