Cyclic redundancy check code storage and comparison module and switching equipment performance test system
A cyclic redundancy check and switching equipment technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve the problems of failure in the forwarding process, error-prone, inability to verify whether the forwarding sequence of data packets is correct, etc., to achieve savings Labor cost and the effect of improving detection accuracy
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Embodiment 1
[0037] Such as figure 2 As shown, it is a schematic structural diagram of a cyclic redundancy check code storage comparison module provided by an embodiment of the present invention, which is composed of figure 2 It can be seen that the cyclic redundancy check code storage and comparison module 20 includes a first cyclic redundancy check code storage unit 21 , a first cyclic redundancy check code reading unit 22 and a comparison unit 23 which are sequentially connected. Among them, the functions of each unit are as follows:
[0038] First, the first cyclic redundancy check code storage unit 21 is used to receive the first cyclic redundancy check code of the ith data packet to be forwarded sent to the switching device to be tested, and store the first cyclic redundancy check code The codes are sequentially written into the storage space.
[0039] Here, the switching device to be tested may be a switching chip or a switching network. In order to test the packet forwarding p...
Embodiment 2
[0051] The embodiment of the present invention also provides a device for comparing and counting data packets, see image 3 , is the structure schematic diagram of the data packet comparison statistics device, which consists of image 3 It can be seen that the device includes the cyclic redundancy check code storage and comparison module 20 provided in the first embodiment and its possible implementation manners, and a packet counter module 30 and a packet delay statistics module 40 respectively connected thereto. Among them, the functions of each module are as follows:
[0052] The cyclic redundancy check code storage comparison module 20 is used to send the judgment result of whether the packet forwarding is correct to the packet counter module 30, and is also used to send the forwarding delay time value to the packet delay statistics module.
[0053] The packet counter module 30 is used for counting the number of wrong packets forwarded according to the judgment result, an...
Embodiment 3
[0058] The embodiment of the present invention also provides a switching equipment performance testing system, including: at least one traffic generator, and the data packet comparison statistics device provided by the second aspect above; the traffic generator includes a packet generation module, a routing management module and a loop Redundancy check code extraction module.
[0059] Wherein, the packet generation module is respectively connected with the routing management module and the cyclic redundancy check code extraction module; the cyclic redundancy check code extraction module is also connected with the cyclic redundancy check code storage comparison module in the data packet comparison statistics device .
[0060] Here, the traffic generator is a tool that can generate data streams of a specific type, specific length, and specific rate. Its main function is to simulate traffic flow during traffic simulation and FPGA (Field-Programmable Gate Array) prototype verificati...
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