| CPC G06F 13/4221 (2013.01) | 15 Claims |

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1. A communication link update method, comprising:
traversing registers in target communication links, so as to determine DownTrain registers;
setting a prohibition flag bit in each of the DownTrain registers to prohibit Down Train, such that communication links with partial Lane Down are shut down entirely;
reading configuration information of each register of the registers in the target communication links, so as to generate a configuration file; and
generating an upgrade task according to the configuration file, and sending the upgrade task to the communication links, whereby the communication links are updated according to the configuration file in the upgrade task.
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