With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
snaLuOperType
sna Lu Operational Type
1.3.6.1.2.1.34.1.2.2.1.3
The value identifies the current LU type.
Back to SNA-NAU-MIB MIB page.
IPHost Network monitor allows you to monitor snaLuOperType 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.