Hi Rodolfo, thank you for your reply. Here are the answers for your questions:
1- The port 5 in the H500 can be configured only in trunk mode and it needs to be atrunk so that WLAN clients can have their traffic forwaded on that port with the vlan tag.
2&3-yes, the H500 boots up, I can access it from one of its lan ports via the 192.168.0.1 IP.
4- There is no ARP to be shown since no IP adress has been bound to the H500 AP. The mac does appear.
Thanks