With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
diagTestId
diag Test Id
1.3.6.1.4.1.351.110.6.3.3
This is used to indicate the test number of the diagnostics test that failed. The value depends upon the implementation in the each of the MGX82xx product.
Back to BASIS-ONLINE-DIAG-MIB MIB page.
IPHost Network monitor allows you to monitor diagTestId on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.