Troubleshooting Tip: AVAGO Transceiver not showing Temperature/Voltage statistics

[ezhupa]

Description	This article explains issues with certain AVAGO transceivers not showing relevant statistics in the CLI and how to fix it.
Scope	FortiGate,
Solution	When running CLI commands such as 'get sys interface transceiver <port>', the normal expectation is to receive output regarding the following values: 'Temperature/Voltage/Optical'. However, when using an AVAGO transceiver with part number AFBR-79EBPZ, these values are not shown.  Below is a similar output: TEST_FortiGate # get system interface transceiver portXX Interface portXX - QSFP/QSFP+ (4 x 20.6G)   Diagnostics : Unspecified   Vendor Name : AVAGO   Part No. : AFBR-79EBPZ   Serial No. : XXXXXXXXXX   Measurement Unit Value High Alarm High Warning Low Warning Low Alarm   ------------ ------------ ------------ ------------ ------------ ------------ ------------   Temperature (Celsius) 0.0 ? 0.0 0.0 0.0 0.0   Voltage (Volts) 0.00 ? 0.00 0.00 0.00 0.00   Ch1 Tx Bias (mA) 0.00 ? 0.00 0.00 0.00 0.00   Ch2 Tx Bias (mA) 0.00 ? 0.00 0.00 0.00 0.00   Ch3 Tx Bias (mA) 0.00 ? 0.00 0.00 0.00 0.00   Ch4 Tx Bias (mA) 0.00 ? 0.00 0.00 0.00 0.00   Ch1 Rx Power (dBm) -inf ? -inf -inf -inf -inf   Ch2 Rx Power (dBm) -inf ? -inf -inf -inf -inf   Ch3 Rx Power (dBm) -inf ? -inf -inf -inf -inf   Ch4 Rx Power (dBm) -inf ? -inf -inf -inf -inf   ++ : high alarm, + : high warning, - : low warning, -- : low alarm, ? : suspect. This is not an issue on the FortiGate or FortiOS side.  This seems to be a limitation on the hardware QSFP, as the transceiver 'AFBR-79EBPZ' does NOT support Temp/Voltage/Power monitoring.