With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
docsDevFilterIpSaddr
DOCSIS Device Filter Ip Saddr
1.3.6.1.2.1.69.1.6.4.1.7
The source IP address, or portion thereof, that is to be matched for this filter. The source address is first masked (ANDed) against docsDevFilterIpSmask before being compared to this value. A value of 0 for this object and 0 for the mask matches all IP addresses.
Back to DOCS-CABLE-DEVICE-MIB MIB page.
IPHost Network monitor allows you to monitor docsDevFilterIpSaddr 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.