| 摘要 |
A method and a system for service link handover are provided. The method and the system are in a communication technical field. The method is as follows. Apply for service processing resources of a second service processing unit. A service link establishment message is sent to the second service processing unit, in which the message carries link address information of a first service node and a second service node, such that the second service processing unit binds link addresses of the first service node and the second service node. A response message from the second service processing unit is received, and a link handover indication message is sent to the first service node and the second service node, such that the first service node and the second service node hand over link connections to the second service processing unit. Thus, an efficiency of a rolling upgrade is improved and a service interruption possibly caused by the rolling upgrade is avoided when units in the same resource pool perform the rolling upgrade.
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