With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccsSpecGroupUpstreamIfIndex
Cisco Cable Spectrum Spec Group Upstream If Index
1.3.6.1.4.1.9.9.114.1.2.4.1.2
The ifIndex of the Cable upstream interface belonging to this Spectrum Group. The value of the corresponding instance of ifType is 'docsCableUpstream(129)'.
Back to CISCO-CABLE-SPECTRUM-MIB MIB page.
IPHost Network monitor allows you to monitor ccsSpecGroupUpstreamIfIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.