With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
dsx3PlcpCounterTable
dsx3 Plcp Counter Table
1.3.6.1.4.1.351.110.4.4.2.4.1
The table for DS3 PLCP counter table.
Back to CISCO-MGX82XX-DSX3-MIB MIB page.
IPHost Network monitor allows you to monitor dsx3PlcpCounterTable 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.