A METHOD OF TRANSMITTING A MESSAGE

摘要

The invention discloses a method for transmitting message, first, separating network into different subnets based on port set of switch, the method comprising the following steps: Step A: a switch receiving a message and determining the message input port, and based on the separating result, determining the port range to which said message can be transmitted; Step B: Transmitting the message to the port of the port range determined in Step A by the switch. With the invention, the subnets in the network are strictly isolated with each other, and the security of communication in the network can be guaranteed; meanwhile the freedom of network planning can be increased for every user.