With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ons15501TrapLogEntryPhyIndex
ons15501 Trap Log Entry Phy Index
1.3.6.1.4.1.1869.11.11.3.2.1.6
Provides entPhysicalIndex value for the physical entity corresponding to the trap entry.
Back to ONS15501-MIB MIB page.
IPHost Network monitor allows you to monitor ons15501TrapLogEntryPhyIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.