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Art-Net introduction and terminology

Art-Net is an ethernet protocol based on the TCP/IP protocol suite. Its purpose is to allow transfer of large amounts of DMX512 data over a wide area using standard networking technology. It does this by allocating each universe a Port-Address. A DMX-to-Art-Net…

TCP/IP and UDP

The transfer of data across an ethernet network is achieved using a communication protocol called TCP This stands for Transport Control Protocol / Internet Protocol. (Note that in this instance internet means inter-network not specifically the Internet). The TCP/IP protocol…

Subnet Mask

The subnet mask defines which part of the IP represents the network address and which part represents the node address. e.g. a subnet mask of 255.0.0.0 means that the first byte of the IP is the network address and the…

Port

Actual data transmission on Art-Net uses the UDP protocol that operates ‘on top of’ the TCP/IP protocol. UDP data transfer operates by transferring data from a specific IP:port address on a node or controller to a second specific IP:port address…

Mac Address

MAC stands for Media Access Control. This is the low level network connection. Every Media Access Control has a MAC Address that allows it to be identified. This address is globally unique and is assigned by the IEEE. Each Media…

Casting

The term casting is used to describe the different ways in which data can be sent to recipients. In IPv4 there are three methods called: Unicast In unicast a single sender transmits data to a single receiver. Unicast is the…

DHCP

DHCP stands for Dynamic Host Configuration Protocol. It is used to allocate IP addresses to network devices or Hosts. The DHCP server holds a pool of available IP addresses. When a host requires an IP address, it requests one from…