@cmr thank you for your return ,
I share with you the diagram what it connected , AP MR20 ---- switch HP ------FW-----ADSL
Our client don't use DHCP , he use just static IP for all network.
the static IP adress is configured on the AP MR20 :
We don't have any rules blocked the AP meraki MR20 on firewall.
we can't do ping with this ip address : 192.168.100.144
do you have any method to test this AP meraki.
Best regards