With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ons15501GainTrigger
ons15501 Gain Trigger
1.3.6.1.4.1.1869.11.11.2.10
The gain deviation allowed from the configured gain before an alarm is asserted. The alarm is not cleared, until measured gain(ons15501OpticalPowerGain) is back within 90% of ons15501GainTrigger from configured gain (ons15501ConfigOpticalGain).
Back to ONS15501-MIB MIB page.
IPHost Network monitor allows you to monitor ons15501GainTrigger 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.