MR44 Alerting: This device is using a DHCP IP address from VLAN 0 instead of using configured VLAN 1
I have a MR44 connected to a C3560CX that keeps alerting a DHCP IP and VLAN issue, even though both the device and the trunk port are set to VLAN 250 and neither 0 nor 1 are being used. I have similar setups elsewhere and this is the first time I've seen this alert. The AP seems to be fully functional otherwise.
Am I missing something?
interface GigabitEthernet0/9 description Connection to WAP01 switchport trunk allowed vlan 200,205,250 switchport trunk native vlan 250 switchport mode trunk switchport nonegotiate srr-queue bandwidth share 1 30 35 5 priority-queue out mls qos trust cos auto qos trust end
And sorry I originally replied to this quickly on a coffee break but I should probably explain why this is occurring.
A native vlan on a switchport tells the switch to treat any untagged frame coming into that port as the configured native vlan. And for any frames the switch receives destined for that port and tagged with that native vlan, it will strip the vlan tag off frames before putting them on the wire.
In this functionality, it's very similar to how an access port works.
Because you set the management vlan in the Meraki dashboard, the AP is sending out management frames already tagged with that vlan and is expecting to receive frames tagged with that vlan.
In your circumstance, because of the native vlan config on the port, the Meraki AP would have been receiving untagged management frames.