Meraki 52 not trunking with meraki 250 switches

[MR521]

We have connected the meraki MR 52 access points to MS 250 switch.

When we tried to make switch port to trunk, access points will be go unreachable.

[NolanHerring]

Do you have a native vlan setup for the AP vlan?
Does the AP have DHCP or STATIC configured on itself?

[MR521]

Yes we have set the native vlan.

Currently its in DHCP but later will be moved to Static.

[NolanHerring]

I would take a laptop, configure a port for the same VLAN as your native when in trunk mode, but make the port access for the laptop test. plug the laptop in. does it get IP/DHCP/DNS/gateway etc.

If the AP is set to DHCP, and the port is configured for trunk and you have native vlan set correct, it 'should' work assuming everything else is working (dhcp etc.) which is what the laptop test will confirm.

[PhilipDAth]

Is the AP configured to user a specific VLAN for management, or has it been left untagged?  If configured for a specific VLAN - what?

The trunk port - what native VLAN is it using?

You say it was working, implying it worked when the switch port was an access port.  What VLAN was the access port in?

What VLAN do you want the AP to use for its management traffic?  Is the AP using DHCP and is there a DHCP server in that VLAN?  Does the AP get an IP address according to the DHCP server?