Method and device for establishing network connection

Abstract

Embodiments of the present invention provide a method and device for establishing a network connection. After broadcasting the PADI message, receive PADO messages returned by multiple network servers according to the PADI message; cache multiple PADO messages received locally; then select an unselected PADO message from the cached multiple PADO messages PADO message that has been passed; try to establish a network connection with the network server that sent the selected PADO message; In the text, an unselected PADO message is selected until a network connection is established with one of the network servers sending and received multiple PADOs. Therefore, compared with the prior art, the embodiment of the present invention can ensure that a network connection is established between the client and a legal network server, thereby ensuring that the user can dial up to access the Internet through the legal network server.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a method and device for establishing a network connection. Background technique [0002] Currently, the client usually dials up to access the Internet based on the PPPoE protocol (Point to Point Protocol over Ethernet, point-to-point protocol over Ethernet). Among them, when the client needs to dial up to access the Internet, the client can broadcast the PADI (Point to Point Protocol over Ethernet Active Discovery Offer, the point-to-point protocol on the Ethernet effectively discovers the start) message, and when the network server receives the PADI message, it will A PADO (Point to Point Protocol over Ethernet Active Discovery Offer) message is returned to the client, and the client has been notified that a network connection can be established with the network server, thereby realizing dial-up Internet access. [0003] However, sometimes la...

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Problems solved by technology

[0005] However, the inventor has found that if the sender of the first received PADO message is not a legal network server but an illegal network server, the client will only attempt to establish a network connection with the illegal network server. It will not try to establish a network connection with other network servers. However, it cannot successfully establish a network connection with an illegal network server. Therefore, it will cause the client to fail to establish a network connection with a legal network server, and eventually the client cannot dial. go online

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