Znyx Networks bh5700 manual Analyzing Mstate information for the switch

sensor information. Examine the System Event Log (SEL) on the ShMM and determine if critical sensor events have been logged for the switch in question.

If the switch has reported critical sensor data for temperature or voltage, the ShMM can prevent it from booting. To determine if the critical sensor events persist, it may be necessary to alter the rules enforced by the ShMM to allow the switch to receive back-end power and boot (see the ShMM documentation for instruction).

If other FRUs, in addition to the failed switch, are reporting similar critical sensors, such as temperature or voltage, this may indicate a chassis-related failure (such as fans or power supply).

Voltage: If the Ethernet Switch Blade continues to report voltage critical threshold error after changing the rules in the ShMM to allow it to receive power, then return the switch for repair.

Temperature: If the Ethernet Switch Blade continues to report a temperature critical temperature error after changing the rules, check the fans to make sure that there is sufficient airflow to the switch. If airflow is sufficient, and the temperature threshold is still reported, then return the switch for repair.

Analyzing Mstate information for the switch

The SEL will also contain Mstate information for the switch that can be useful in determining conditions related to a failed boot. Knowing the state change transition history in the SEL can help to narrow down activation problems with the switch. The states are defined as follows:

M0 – No power and hot swap handle open

M1 – No communications. Wait in M1 until hot swap ejector is closed.

M2 – FRU announces its presence to the ShMM and awaits activation permission M3 – Activation

M4 - Operational state; command issued to enable back-end power.

M5 – Deactivation request, such as hotswap ejector opened

M6 – Deactivation granted by ShMM

M7 – Unexpected loss of communication between FRU and ShMM

The information in the SEL will mostly reflect problems that can be related to the IPMC functions of the switch. Other problems related to loading the switch software environment during boot might require further analysis of the switch itself.

Checking the ekey Status From the Shelf Manager

You can check the ekey status from the shelf manager with the clia board <x> command. Shelf Manager commands:

Ethernet Switch Blade User's Guide release 3.2.2j page 153