The invention provides an
Ethernet IP message packaging method based on the SDN and a
network isolation and DHCP implementing method based on the SDN. The technical problems that due to message layer two head packaging introduction, the transfer process is complex and the transmission efficiency is reduced are solved. The methods include the steps that firstly, an equipment
physical layer obtains a physical
signal from a
transmission medium according to a frame gap and a guide frame, converts the physical
signal into a bit and transfers the bit to a
data link layer; secondly, the
data link layer carries out prior
processing work besides
MAC address recognition and addressing; thirdly, a
protocol stack recognition message is analyzed; fourthly, after being transferred out through a
router, the message is transferred to the
data link layer for carrying out other
processing procedures besides
Ethernet packaging and MAC addressing, and the message is sent to the
physical layer to be processed according to the format of the message header; fifthly, the
physical layer converts the bit of the data frame of the message into an optoelectronic
signal in a prior mode and forwards the optoelectronic signal out.