gateway
    In the wireless world, an access point with additional software capabilities such as
      providing 
NAT and 
DHCP.
      Gateways may also provide 
VPN support, roaming, firewalls,
      various levels of security, etc.
 
  
    gigabit
      ethernet
    This is the networking standard for transmitting data at 1000 Mbps or 1 Gbps. Devices
      can transmit at multiples of gigabit Ethernet as well.
   
  
    gratuitous ARP
    When a host sends an
        
ARP request to resolve its own IP
      address, it is called gratuitous ARP. 
For more
        information, see Gratuitous ARP Protection in the ExtremeXOS 21.1 User Guide. 
  
    GUI
    Graphical User
      Interface.