Method and device for upgrading virtual switch

A device for upgrading a virtual switch, the device comprising:

• a memory storing a set of instructions;
• and
• one or more processors configured to execute the set of instructions to cause the device to perform:
• loading a first module on the virtual switch, wherein the virtual switch comprises a second module, the second module comprising a static configuration and dynamic information, the dynamic information of the second module changes during the upgrading of the virtual switch;
• synchronizing a static configuration of the second module to the first module;
• recording the changing dynamic information of the second module;
• synchronizing the changing dynamic information of the second module to the first module;
• and
• in response to the static configuration and the changing dynamic information of the second module having been synchronized to the first module, directing network flows received by the virtual switch to the first module.

A non-transitory computer readable medium that stores a set of instructions that is executable by a controller to cause the controller to perform a method for upgrading a virtual switch, the method comprising:

• loading a first module on the virtual switch, wherein the virtual switch comprises a second module, the second module comprising a static configuration and dynamic information, the dynamic information of the second module changing during the upgrading of the virtual switch;
• synchronizing the static configuration of the second module to the first module;
• recording the changing dynamic information of the second module;
• synchronizing the changing dynamic information of the second module to the first module;
• and
• in response to the static configuration and the changing dynamic information of the second module have been synchronized to the first module, directing network flows received by the virtual switch to the first module.