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Message forwarding method and message forwarding device

A packet forwarding and packet encapsulation technology, applied in the network field, can solve problems such as affecting the efficiency of packet forwarding, detours of Layer 3 data traffic forwarding paths, and forwarding bottlenecks.

Active Publication Date: 2015-08-26
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] At present, the Layer 3 data traffic across subnets in the NVO3 network generally needs to be forwarded through a centralized Layer 3 gateway, but the Layer 3 data traffic across subnets is forwarded through a centralized Layer 3 gateway, which will cause The forwarding path of Layer 3 data traffic is circuitous, and it is easy to form a forwarding bottleneck at the centralized Layer 3 gateway, thereby affecting the efficiency of message forwarding

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  • Message forwarding method and message forwarding device
  • Message forwarding method and message forwarding device
  • Message forwarding method and message forwarding device

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Embodiment Construction

[0086] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0087] In the NVO3 network, generally one tenant corresponds to a three-layer virtual private network (English: Virtual Private Network, abbreviation: VPN), and the three-layer VPN corresponding to different tenants passes through a virtual routing table (English: Virtual Routing and forwarding table) on each NVE. Forwarding, abbreviation: VRF) fo...

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Abstract

Provided in an embodiment of the present invention are a packet forwarding method and device. The method comprises: a first network virtualization edge (NVE) receives a first packet transmitted by a first tenant end system (TES), the destination IP address of the first packet being the IP address of a second TES, the destination MAC address of the first packet being a gateway MAC address corresponding to the first NVE, the first TES and the second TES belonging to the same layer 3 VPN; the first NVE obtains an access VN ID of the first TES according to at least one of the first packet and the port information for receiving the first packet, and obtains the identifier of a layer 3 VPN instance of the first TES; the first NVE performs layer 2 termination on the first packet, looks up a route forwarding table corresponding to the identifier of the layer 3 VPN instance of the first TES, to obtain an entry corresponding to the IP address of the second TES, and encapsulates the first packet into a network virtualization overlays(NVO3) packet according to the entry; the first NVE forwards the NVO3 packet to the second NVE by layer 3, and the second TES accesses the second NVE.

Description

technical field [0001] The embodiment of the present invention relates to network technology, and in particular to a message forwarding method and device in an NVO3 network. Background technique [0002] Network virtualization based on a three-layer network (English: Network Virtualization Overlays, abbreviation: NVO3) is a technology to realize network virtualization. Through NVO3 technology, a physical network can be virtualized, so that a physical network can be used by different tenants. Common use, the data traffic between each tenant is isolated from each other, and the network protocol (English: Internet Protocol, abbreviation: IP) in the virtual network used by different tenants can be the same, which is equivalent to each tenant using the physical network independently. [0003] In a network using NVO3 technology, each tenant generally includes one or more virtual networks, and the tenant end system (English: tenant end system, abbreviation: TES) in each virtual net...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/741H04L29/12H04L45/74
CPCH04L12/46H04L12/4633H04L12/4645H04L45/64H04L45/745H04L2101/622H04L12/4641H04L61/103
Inventor 郝卫国厉益舟倪辉黄世碧
Owner HUAWEI TECH CO LTD
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