Link backup method and apparatus for computer network
A technology of computer network and link backup, applied in the field of computer network, can solve the problems of easy damage of wired lines, difficult to restore, high cost and inconvenience, and achieves the effect of small investment, convenient expansion and large coverage.
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[0037] Specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0038] figure 2 Shown is a block diagram of the internal structure of the wireless link backup device of the present invention.
[0039] The wireless link backup device is used to receive information such as data packets of LAN users, and send the data packets to the INTERNET; monitor whether the wired WAN port is working normally, and switch the main link to wireless backup when the wired WAN port cannot work normally link; when the wired WAN port returns to normal, switch the wireless backup link to the main link and start the wired WAN port.
[0040] The wireless link backup device includes a wireless WAN card unit 11 , a spanning tree bridge unit 12 , a LAN Ethernet controller 13 , a wireless network card unit 14 , a network address translation NAT unit 15 , and a WAN Ethernet controller 16 .
[0041] Network address translation NAT unit:...
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