Software defined network-based gateway migation processing

A non-transitory machine readable storage medium, which is applicable to a first virtual extensible local area network (VXLAN) internet protocol (IP) gateway (GW) to be migrated in at least two VXLAN IP GWs, wherein the non-transitory machine readable storage medium stores machine readable instructions that are executable by a processor to:

• lower a priority of a route, which carries a virtual extensible local area network (VXLAN) tunneling end point (VTEP) IP address of a port of a VXLAN tunnel corresponding to a first VXLAN IP GW, and release the route to an VTEP at peer end of the VXLAN tunnel, lower a priority of a static route destined for a virtual machine (VM), and release the static route to a network device in a non-virtual network;
• wherein the at least two VXLAN IP GWs possess a same VTEP IP address of a port of a VXLAN tunnel, before the priority of the route corresponding to the first VXLAN IP GW is lowered, the priority of the route carrying the same VTEP IP address, which is released by each of the first and second VXLAN IP GWs, is the same, and the priority of the static route from each of the first and second VXLAN IP GWs to the VM is the same;
• and
• execute migration actions, when a controller in an SDN monitors that no data flow between the VM and the network device in the non-virtual network passes the first VXLAN IP GW.

A software defined network (SDN)-based gateway (GW) migration processing device, which is applied to a controller in an SDN wherein the SDN-based GW migration processing device at least comprises a processor, a memory and a non-transitory storage medium;

• the non-transitory storage medium is to store machine readable instructions that are executable by a processer, the machine readable instructions comprising a first command transmitting module, a monitoring module and a second command transmitting module;
• the first command transmitting module is to transmit a first configure command and a second configure command to a first virtual extensible local area network (VXLAN) internet protocol (IP) GW to be migrated in at least two VXLAN IP GWs, wherein the first configure command comprises:
• lowering a priority of a route, which carries an VXLAN tunneling end point (VTEP) IP address of a port of a VXLAN tunnel corresponding to the first VXLAN IP GW;
• the second configure command comprises:
• lowering a priority of a static route destined for a virtual machine (VM);
• wherein the at least two VXLAN IP GWs possess a same VTEP IP address of a port of a VXLAN tunnel, before the priority of the route corresponding to the first VXLAN IP GW is lowered, the priority of the route carrying the same VTEP IP address, which is respectively released by each of the at least two VXLAN IP GWs, is the same, and the priority of the static route which is from each of the at least two VXLAN IP GWs to the VM is the same;
• the monitoring module is to monitor whether there is data flow between the VM and a network device in a non-virtual network passing the first VXLAN IP GW;
• and
• the second command transmitting module is to transmit a migration action execute command to the first VXLAN IP GW, when the monitoring module monitors that no data flow between the VM and the network device in the non-virtual network passes the first VXLAN IP GW.