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Do I have to register the MAC address of my laptop to use it on the wired network?
Answer:
No. A laptop can be used on the wired network without having its MAC address registered. Provided that the laptop is connected to a network port which has been configured to be on an appropriate VLAN, it will acquire a dynamically-assigned IP address via DHCP, and it will then be active on the network.
It's only necessary to register the MAC address if you require a permanently-fixed IP address for the laptop.
See: Self-managed machines in the Informatics Forum and Self-managed machines in Appleton Tower.