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发明授权
CN106209637B 从虚拟可扩展局域网至虚拟局域网的报文转发方法和设备 有权

从虚拟可扩展局域网至虚拟局域网的报文转发方法和设备
摘要：
本申请提供了从虚拟可扩展局域网至虚拟局域网的报文转发方法和设备。本发明中，网关VXLAN交换机的网板不再使用仅具有报文转发功能的网片，而是使用具有转发功能和表项功能的芯片比如与接口板相同的交换芯片。通过本发明，网关VXLAN交换机实现VXLAN的三层网关功能，以实现从VXLAN至VLAN的报文转发，且整个过程只是在VXLAN交换机内部执行，没有浪费任何带宽资源，做到了报文线速转发的。
摘要（英）：

I/O board of a VXLAN switch removes VXLAN encapsulation from a packet, determines to perform layer 3 forwarding for the packet and sends the packet to a fabric board of the VXLAN switch. The fabric board determines to perform layer 3 forwarding for the packet, searches out a layer 3 entry matching a destination IP address of the packet from a local layer 3 table, modifies a source MAC address of the packet into a gateway MAC address of the VXLAN switch, modifies a destination MAC address of the packet into a destination MAC address in the layer 3 entry, and when an egress port in the layer 3 entry is a VLAN port, sends the packet to an I/O board associated with the egress port. The I/O board associated with the egress port forwards the packet to a VLAN via the egress port in the layer 3 entry.

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