With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
dot3MauType1000BaseTHD
dot3 Mau Type1000 Base THD
1.3.6.1.2.1.26.4.29
Four-pair Category 5 UTP, half duplex mode
Back to IANA-MAU-MIB MIB page.
IPHost Network monitor allows you to monitor dot3MauType1000BaseTHD 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.
