Packet processing method, related apparatus, and NVO3 network system

A packet processing apparatus, applied to a network virtualization over layer 3 (NVO3) network system, wherein the NVO3 network system comprises the packet processing apparatus which is a first network virtualization edge (NVE), a second NVE, a remote NVE, and a first customer edge (CE), the first CE is multihomed to the packet processing apparatus and the second NVE, and the packet processing apparatus and the second NVE share a first shared Virtual Extensible LAN (VXLAN) tunnel end point (VTEP) Internet Protocol (IP) address, the apparatus comprising:

• a non-transitory memory configured to store program instructions;
• a processor configured to execute the program instructions to enable the packet processing apparatus to:
• receive a first packet sent by the first CE, wherein the first packet comprises a media access control (MAC) address of the first CE and a virtual local area network identifier (VLAN ID);
• determine a VXLAN network identifier (VNI) of the first CE according to an inbound interface of the first packet and the VLAN ID;
• perform NVO3 encapsulation on the first packet to obtain an NVO3 encapsulated first packet, wherein the NVO3 encapsulated first packet comprises the VNI of the first CE, and a source IP address in an NVO3 header of the NVO3 encapsulated first packet is the first shared VTEP IP address;
• and
• forward the NVO3 encapsulated first packet to the remote NVE, wherein the NVO3 encapsulated first packet is used to instruct the remote NVE to establish a mapping relationship among the MAC address of the first CE, the VNI of the first CE, and the first shared VTEP IP address in a MAC forwarding table.

A packet processing method, wherein the method is applied to a network virtualization over layer 3 (NVO3) network system, the NVO3 network system comprises a first network virtualization edge (NVE), a second NVE, a remote NVE, and a first customer edge (CE), the first CE is multihomed to the first NVE and the second NVE, and the first NVE and the second NVE share a first shared Virtual Extensible LAN (VXLAN) tunnel end point (VTEP) Internet Protocol (IP) address, the method comprising:

• receiving, by the remote NVE, an NVO3 encapsulated first packet forwarded by the first NVE, wherein the NVO3 encapsulated first packet comprises a VXLAN network identifier (VNI) of the first CE, a source IP address in an NVO3 header of the NVO3 encapsulated first packet is the first shared VTEP IP address, the NVO3 encapsulated first packet is obtained by performing NVO3 encapsulation on a first packet, the first packet is sent to the first NVE by the first CE, the first packet comprises a media access control (MAC) address of the first CE and a virtual local area network identifier (VLAN ID), and the VNI of the first CE is determined by the first NVE according to an inbound interface of the first packet and the VLAN ID;
• and
• decapsulating, by the remote NVE, the NVO3 encapsulated first packet, and establishing a mapping relationship among the MAC address of the first CE, the VNI of the first CE, and the first shared VTEP IP address in a MAC forwarding table.

A packet processing apparatus, applied to a network virtualization over layer 3 (NVO3) network system, wherein the NVO3 network system comprises a first network virtualization edge (NVE), a second NVE, the packet processing apparatus, and a first customer edge (CE), the first CE is multihomed to the first NVE and the second NVE, and the first NVE and the second NVE share a first shared Virtual Extensible LAN (VXLAN) tunnel end point (VTEP) Internet Protocol (IP) address, the apparatus comprising:

• a non-transitory memory configured to store program instructions;
• a processor configured to execute the program instructions to enable the packet processing apparatus to:
• receive an NVO3 encapsulated first packet forwarded by the first NVE, wherein the NVO3 encapsulated first packet comprises a VXLAN network identifier (VNI) of the first CE, a source IP address in an NVO3 header of the NVO3 encapsulated first packet is the first shared VTEP IP address, the first packet is sent to the first NVE by the first CE, the NVO3 encapsulated first packet is obtained by performing NVO3 encapsulation on a first packet, the first packet comprises a media access control (MAC) address of the first CE and a virtual local area network identifier (VLAN ID), and the VNI of the first CE is determined by the first NVE according to an inbound interface of the first packet and the VLAN ID;
• decapsulate the NVO3 encapsulated first packet;
• and
• establish a mapping relationship among the MAC address of the first CE, the VNI of the first CE, and the first shared VTEP IP address in a MAC forwarding table.

A network virtualization over layer 3 (NVO3) network system, the system comprising:

• a first network virtualization edge (NVE);
• a second NVE;
• a remote NVE;
• and
• a first customer edge (CE), the first CE is multihomed to the first NVE and the second NVE, and the first NVE and the second NVE share a first shared Virtual Extensible LAN (VXLAN) tunnel end point (VTEP) Internet Protocol (IP) address;
• wherein, the first NVE is configured to receive a first packet sent by the first CE, wherein the first packet comprises a media access control (MAC) address of the first CE and a virtual local area network identifier (VLAN ID);
• the first NVE is further configured to:
• determine a VXLAN network identifier (VNI) of the first CE according to an inbound interface of the first packet and the VLAN ID, and perform NVO3 encapsulation on the first packet to obtain an NVO3 encapsulated first packet, wherein the NVO3 encapsulated first packet comprises the VNI of the first CE, and a source IP address in an NVO3 header of the NVO3 encapsulated first packet is the first shared VTEP IP address;
• the first NVE is further configured to forward the NVO3 encapsulated first packet to the remote NVE;
• and
• the remote NVE is configured to:
• decapsulate the received NVO3 encapsulated first packet, and establish a mapping relationship among the MAC address of the first CE, the VNI of the first CE, and the first shared VTEP IP address in a MAC forwarding table.