With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
portTopNType
port Top N Type
1.3.6.1.4.1.9.5.1.20.1.1.3
This object may not be modified if the associated portTopNStatus object is equal to active(1).
Back to CISCO-STACK-MIB MIB page.
IPHost Network monitor allows you to monitor portTopNType on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.