Werk #16922: Detect ifAlias on Nera Evolution XPAND IP devices

Component	Checks & agents
Title	Detect ifAlias on Nera Evolution XPAND IP devices
Date	Jul 3, 2026
Level	Trivial Change
Class	New Feature
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	3.0.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.5.0p9 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.4.0p34 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Interface checks on SNMP devices with 32-bit counters (the if section) previously exposed the interface description (ifDescr) as the interface alias, because the real alias (ifAlias) was only fetched for a small, hard-coded list of devices. As a result, the "Use alias" appearance and the displayed alias did not match the actual ifAlias -- for example on Nera Evolution XPAND IP devices.

The ifAlias is now fetched for every 32-bit SNMP device that provides it, matching what the hardware/software inventory already does. Devices with 64-bit counters are unaffected (they are handled by the if64 section), and devices that do not provide an ifAlias continue to fall back to the description.

If you use the "Use alias" appearance, re-discover the affected hosts to pick up the corrected item names.

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