The rapid version-loading is proposed in the large scale DSP system of communication networks. The key is version-loading parallel for multi-DSP. Every DSP chip has a physical ID corresponding to a port number on the switch chip, in addition, according to the relationship between the MAC address of DSP and the port number of switch, we can get the the relationship between the MAC address and the physical ID of DSP, and then get the relationship between the version and the MAC address of DSP. After resetting all DSPs, host can obtain the source addresses of DSP from the version-request frames, then deduce the appropriate versions and load them parallel.Through parallel loading, the time for loading multi-DSP can be shorten from dozens of minutes to dozens of seconds, can be met the demand of rapid startup for communication system. This method can be used on the environment there are multiple DSPs loaded through Ethernet.