HPE Comware SNMP Health

The function check_my_device_health() implements a check of the IRF stacking technology.

We first class the super-class, and then _check_irf_health(). The latter reads entries from the HPE Comware HH3C-STACK-MIB.

A good explaination is at https://www.h3c.com/en/d_202302/1769896_294551_0.htm and an easily readable mib format at https://mibs.observium.org/mib/HH3C-STACK-MIB/

We read hh3cStackMemberNum to see if there are stack members. If so, we next read the members, their member ID, active IRF ports and their priority at hh3cStackDeviceConfigEntry. This is parsed at _parse_mibs_irf_device_config()

Next, we read their roles from hh3cStackBoardConfigEntry, parsed at _parse_mibs_irf_device_role(). This is an indirect read, each device can have boards with a role. So we map the board-id to the member-id.

Finally, we check if: * each member has at least 2 active IRF ports, * that the ‘master’ member has the highest priority (if not, this means there was a failure somewhere)

In either of those situations, we add a log warning about device health.