Werk #20154: Fix wrong ethernet port speed for Cisco Meraki wireless APs

Component

Checks & agents

Title

Fix wrong ethernet port speed for Cisco Meraki wireless APs

Date

Jul 8, 2026

Level

Trivial Change

Class

Bug Fix

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

Previously, the speed reported by the Interface service for Ethernet ports on Cisco Meraki wireless access points was calculated using a conversion constant that was off by a factor of 10. This caused the reported speed to always be 10 times too low. This has been fixed.

Note on upgrading

This bug has been present since the check was introduced, so any host where the affected Interface service was already discovered has the wrong, too-low speed persisted as its baseline. After upgrading, the check computes the correct speed, which no longer matches that old baseline, triggering a one-time WARN with a "Speed changed" notice. Rediscover the affected services to update the baseline and clear this false WARN.

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