It's should be fixed for such Hardware and os version since revision 14529.
Not sure how that will be correct for other hardware.
This OS not have simple index (or identifier) in this table (DDM sensors)
for correctly associate sensors to ports.

Nicolas Korten via observium wrote on 17.12.2025 08:42:

Hi Observium Team,

we noticed that when monitoring IPInfusion/OcNOS Routers (at least on Ufispace s9510-s28dc) the Interface Sensors naming is incorrect, some items are offset by 1, and others are not showing up.

For example, we have an interface with ifDescr="xe4" which is detected correctly in the ports/basic tab (see ports.png) - but in the Sensors tab it is detected as xe5 (see sensors.png - xe5 has no treansciever and is Admin Down on this device).

Other ports are not showing up in the Ports/Sensors section, but they do appear in Health/dBm (see dbm.png).

IPInfusion is starting the interface enumeration in ifDescr with 0 (ce0 is the first interface), and in the CMM-CHASSIS-MIB the interfaces are indexed by CmmTransIndex starting with 1.

For example, xe4 receive power is at:
.1.3.6.1.4.1.36673.100.1.2.3.1.22.1.5.1 (notice cmmTransIndex = 5)

ce0 receive power:
.1.3.6.1.4.1.36673.100.1.2.3.1.22.1.1.1 (notice cmmTransIndex = 1)

Is there any option to fix this?

Thank you in advance, kind regards,

Nicolas

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