|No.247||What is the "Send MAC Address" option?||07-09-2009|
Category : how to
One MAC address has to be assigned one network device. MAC address is formed 6 Byte in hexadecimal. Institute of Electrical and Electronics Engineers (IEEE) allocate the first 3 Bytes and the other 3 Bytes are allotted by manufacturer without duplication. So, a MAC address is for only one network device in the world.
1. TCP Connection with Remote Host
This option is available on TCP modes only. There are two TCP connection modes. The one is TCP server (T2S). In this case, ezTCP wait for request packet of TCP connection opening one TCP port (Local Port). The other one is TCP client (COD). In this mode, ezTCP sends request packet of TCP connection to the remote host. The peer IP address and port should be set.
2. Sending MAC Address
ezTCP sends its MAC address to the remote host right after the connection is established. Figure 2-3 is presenting sequence of making a TCP connection and sending MAC address as a time chart when ezTCP is set to TCP client mode.
3. Data Format
6 Bytes of MAC address are presented in hexadecimal. ezTCP changes the data format to ASCII code. In addition, carriage return and line feed (CR, LF) are added in the last of the data. Therefore, total length of data is 14 Bytes.
To use sending MAC address function, configuration is needed. The setting can be implemented by each configuration tool. (Except for EZL-200F)