APPARATUS AND METHOD FOR WAN ACCELERATION AND OPTIMIZATION SUPPORTING FOR MULTI-TUNNEL

摘要

An apparatus and a method for the WAN acceleration and optimization supporting for multi-tunnel are provided to make a traffic for a disorder tunnel use a normal tunnel and to increase the line speed by the rearrangement, compression and encryption of packets. A TLBD(Tunnel Load Balancing Daemon)(10) performs the tunnel multiplexing information management, the tunnel device management, IP(Internet Protocol) address management, tunnel fault sensing and routing management and the like at the user level. A TLBC(Tunnel Load Balancing Command)(20) transmits the user requests to the TLBD. The user requests includes the addition/deletion of the tunnel multiplexing group, the change of the dynamic tunnel load distribution weight value and group/IP address information request at the user level. A TLBAWD(Tunnel Load Balancing Automatic Weighting Daemon)(30) collects the multiplexing tunnel construction information, measures the volume by tunnels, calculates the weight values according to the tunnel volume and requests the change of the weighted value to the TLBD demon. A TCP proxy module(40) is connected with the TLBAWD and linked with the redirection module of a kernel level and relays the connection of TCP at the inside or outside. A packet processing module(50) performs a packet re-arrangement, packet loss searching, packet compression and packet encryption at the kernel level. A routing determining member(60) performs the traffic distribution through the multiplexing tunnels. A re-direction module(70) transmits the connection of TCP to a local TCP proxy and implements the transparent proxy. A VEIP(Virtual Ethernet IP encapsulation) module(80) is connected with a packet processing module and performs a capsulation.