Method, system and equipment for preventing wireless client terminal from disconnection during internet process

Abstract

The invention discloses a method, a system and a facility for preventing a wireless client from disconnecting from the internet in the process of surfing online. The method comprises: after receiving DHCP request message transmitted by the wireless client, a wireless access point (AP) looks for the existence of a list item corresponded with the MAC address, if no list item exists, the DHCP request message is forwarded to a DHCP server, if yes, the IP address in the list item corresponded with the MAC address is allocated to the wireless client. The method, the system and the facility for preventing a wireless client from disconnecting from the internet in the process of surfing online can avoid disconnection from the internet when a network card of the wireless client is flash off.

Description

technical field [0001] The invention relates to wireless local area network technology, in particular to a method, system and equipment for preventing a wireless client from being disconnected during the process of surfing the Internet. Background technique [0002] Wireless Local Area Network (WLAN, Wireless Local Area Network) technology is one of the hot technologies in the communication field today. Compared with wired networks, WLAN deployment and implementation are relatively simple, and maintenance costs are low. Generally, one or more wireless access points ( AP, Access Port) equipment can establish a local area network covering the entire building or region, and the wireless client accesses the wireless local area network through the AP, and then connects to the fixed network or the Internet. [0003] On a WLAN network, the main processes for a wireless client to access the Internet include: [0004] 1. The wireless client starts scanning and connects to the AP; ...

AI Technical Summary

Problems solved by technology

After the network card resumes connection, the wireless client will re-send a DHCP request message through the AP to obtain an IP address again. However, because the network card flashes off because the wireless client disconnects abnormally, the DHCP server does not receive The DHCP release message sent when the connection is disconnected (that is, the user instructs the wireless client to disconnect), therefore, it is still saved in the previous entry of the wireless client, so that when the DHCP server receives the When a DHCP request message is sent, the DHCP server will consider it to be an illegal DHCP request and ignore it. The wireless client cannot be reassigned to an IP address, and it will be disconnected.

Or, because the DHCP server still saves the previous entries, it will assign a new IP address to the wireless client, causing all applications of the wireless client based on the IP address before the flash disconnection to fail, and also causing the wireless client to go offline

[0010] It can be seen from the above description that in the prior art, when the network card in the wireless client is temporarily disconnected, the wireless client will be disconnected, thereby greatly reducing the service performance and the user's service experience

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