Recovery method of CAPWAP tunnel and device thereof

Abstract

The invention discloses a recovery method of a CAPWAP tunnel, which comprises that: when AP starts reconnection, the AP sends a first message to AC, and the first message carries Session ID; the AC judges whether the self catch has the session message corresponding to the Session ID, if yes, the AC sends a second message to the AP, and rebuilds the CAPWAP tunnel with the AP according to the session message. The invention speeds up the process of the CAPWAP tunnel recovery.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a method and device for restoring a CAPWAP tunnel. Background technique [0002] WLAN (Wireless Local Area Networks, wireless local area network) provides a wireless connection service of the local area network, which can provide high-speed wireless data access. Compared with the traditional wired access method, the wireless local area network makes the use of the network more free It eliminates the shackles of cables and port locations, and the wireless local area network has the advantages of being easy to carry and move, eliminating or reducing complicated network wiring, and only needing to place one or more AP (Access Point, access point) devices. Create a local area network that covers an entire building or area. Wherein, in a wireless local area network, an AC (Access Controller, wireless controller) is used to control and manage APs in the wireless local area netw...

AI Technical Summary

Problems solved by technology

[0021] However, when establishing a CAPWAP tunnel between the AP and the AC, for the AP to establish a DTLS connection with the AC and complete the DTLS establishment and negotiation process, that is, the AC needs to interact with the authentication server and perform authentication and key negotiation. There are too many interactive packets during the process, which leads to a long recovery time of the CAPWAP tunnel, which affects the user experience

Moreover, when frequent communication interruptions occur between the AP and the AC, CAPWAP tunnels will be established frequently, which is not conducive to the use of users.

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