Method of avoiding ppp time-outs during ipcp negotiations

Details Method of avoiding ppp time-outs during ipcp negotiations Method of avoiding ppp time-outs during ipcp negotiations

H - Electricity

04

W

H04W 8/26 (2009.01) H04W 80/04 (2009.01) H04L 29/06 (2006.01)

Patent

CA 2397619

A method for maintaining IPCP address negotiations in a wireless communication network is presented. The method includes a communication device receiving a message requesting an IP address, such as a Config-Request message, from a terminal device, which is coupled to the communication device. The communication device then generates a message requesting an IP address, such as a Config-Request message, and forwards it to a peer (IWF) within the network. The communication device then determines whether it has received an assigned IP address from the IWF in response to the IP address request message. In response to determining that the communication device has not received the assigned IP address from the IWF, the communication device transmits a message with an arbitrary IP address, such as a Configure-Nak message, to the terminal device. The arbitrary IP address contained within the message will be rejected by the communication device, upon receipt of future Configure-Requests containing the arbitrary address. This triggers the terminal device to keep transmitting additional IP address request messages until the communication device has received the assigned IP address.

L'invention concerne un procédé de maintien de négociations d'adresse IPCP dans un réseau de communication sans fil. Ce procédé fait intervenir un dispositif de communication recevant un message demandant une adresse IP, tel qu'un message de demande de configuration, en provenance d'un terminal couplé au dispositif de communication. Le dispositif de communication produit ensuite un message demandant une adresse IP, tel qu'un message de demande de configuration, et le réachemine vers un homologue (IWF : moyen d'interfonctionnement) dans le réseau. Le dispositif de communication détermine ensuite s'il a reçu une adresse IP affectée de l'IWF en réponse au message de demande d'adresse IP. Si le dispositif de communication n'a pas reçu l'adresse IP affectée de l'IWF, le dispositif de communication transmet au terminal un message avec une adresse IP arbitraire, tel qu'un message d'accusé négatif (NAK) de configuration. L'adresse IP arbitraire contenue dans le message sera rejetée par le dispositif de communication dès réception de demandes de configuration contenant l'adresse arbitraire. Ainsi, le terminal continue à transmettre des messages de demande d'adresse IP additionnels jusqu'à ce que le dispositif de communication ait reçu l'adresse IP affectée.

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