With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
portEntPhysicalIndex
port Ent Physical Index
1.3.6.1.4.1.9.5.1.4.1.1.25
object, defined in ENTITY-MIB, for the entity physical index corresponding to this port.
Back to CISCO-STACK-MIB MIB page.
IPHost Network monitor allows you to monitor portEntPhysicalIndex 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.