(With the maturity of wireless local area network technology and wireless products, wireless network has put forward new feasible ideas for the construction of campus network. The wireless local area network standard IEEE802.1lb can be smoothly and seamlessly connected with the existing computer network, and can be interconnected with the existing computer network and terminal equipment, and has excellent compatibility and integration with wired network resources. An additional advantage of wireless networking is that the choice of wireless networking technology is highly selective.)