With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoCdpV2IfExtGroup
cisco Cdp V2 If Ext Group
1.3.6.1.4.1.9.9.23.2.2.7
A collection of objects for use with the Cisco Discovery Protocol version 2 to configure the value for Extended Trust TLV and COS for Untrusted Port TLV.
Back to CISCO-CDP-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoCdpV2IfExtGroup 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.