Hi Nikolas,

need to check how interfaces associated with sensors.

But required full snmpdump from your device. Please read this doc and send me (out of list) dump from this device: https://docs.observium.org/developing/add_device/#snmp-dump

You also can send it me in our Discord channel: @landy https://discord.gg/GjpNXKWm8W

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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