With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
docsDevFilterLLCProtocolType
DOCSIS Device Filter LLC Protocol Type
1.3.6.1.2.1.69.1.6.2.1.4
The format of the value in docsDevFilterLLCProtocol: either a two-byte Ethernet Ethertype, or a one-byte 802.2 Service Access Point (SAP) value. ethertype(1) also applies to Standard Network Access Protocol (SNAP) encapsulated frames.
Back to DOCS-CABLE-DEVICE-MIB MIB page.
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