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VXLAN (virtual extensible local area network)-based massage forwarding method and device

A technology of message forwarding and message encapsulation, which is applied in the field of network communication to achieve the effect of improving robustness and fault tolerance and enhancing redundant protection functions

Active Publication Date: 2016-05-11
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method can only protect against link failures between VTEPs, which has limitations

Method used

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  • VXLAN (virtual extensible local area network)-based massage forwarding method and device
  • VXLAN (virtual extensible local area network)-based massage forwarding method and device
  • VXLAN (virtual extensible local area network)-based massage forwarding method and device

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Embodiment Construction

[0042] Such as figure 1 As shown, a VXLAN network usually consists of the following parts:

[0043] Server (Server): Located in a dispersed physical site, there can be one or more servers in a site.

[0044] VM: Multiple VMs can be created in one server, and different VMs can belong to different VXLANs. VMs belonging to the same VXLAN are in the same logical Layer 2 network and communicate with each other at Layer 2; VMs belonging to different VXLANs are isolated at Layer 2.

[0045] VTEP: The edge device of the VXLAN network, which can be an independent physical device or a server where the VM resides. VTEP is responsible for encapsulating the VXLAN header, UDP (UserDatagramProtocol, User Datagram Protocol) header and IP (InternetProtocol, Internet Protocol) header for the user message from the VM, and sends the obtained VXLAN message to the destination VTEP through the VXLAN tunnel; and, Decapsulates the VXLAN packet received from the VXLAN tunnel, and sends the obtained ...

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Abstract

The invention discloses a VXLAN (virtual extensible local area network)-based massage forwarding method and device. The method includes the following steps that: when a current device is an opposite-end VTEP (VXLAN tunnel end point) of a main VTEP (VXLAN tunnel end point) and a standby VTEP (VXLAN tunnel end point), a tunnel between the current device and the main VTEP is established and is configured as a main tunnel, and a tunnel between the current device and the standby VTEP is established and is configured as a standby tunnel; after a user message to be sent to a non-virtual network is received, and the outgoing interface of the user message is determined as a tunnel; if the tunnel state of the tunnel in a tunnel table is active, the destination IP address of the tunnel is used, and the user message is encapsulated to form a VXLAN message, and the VXLAN message is forwarded through the tunnel; and if the tunnel state of the tunnel in the tunnel table is inactive, the destination IP address of an association tunnel of the tunnel is used, and the user message is encapsulated to form a VXLAN message, and the VXLAN message is forwarded through the association tunnel. According to the method, when the tunnel is the main tunnel, the association tunnel is the standby tunnel, and if the tunnel is the standby tunnel, the association tunnel is the main tunnel.

Description

technical field [0001] The present application relates to the technical field of network communication, in particular to a message forwarding method and device based on a VXLAN network. Background technique [0002] VXLAN (VirtualeXtensibleLocalAreaNetwork, Virtual Extensible Local Area Network) is a layer-2 VPN based on IP (InternetProtocol, Internet Protocol) network and adopts "MAC (MediaAccessControl, Media Access Control) inUDP (UserDatagramProtocol, User Datagram Protocol)" encapsulation form ( VirtualPrivateNetwork, virtual private network) technology. Based on the existing service provider or enterprise IP network, VXLAN can provide Layer 2 interconnection for dispersed physical sites and provide service isolation for different tenants. As the core technology of network virtualization, VXLAN is being increasingly used in large-scale data center networks together with SDN (Software Defined Network, software-defined network). [0003] VTEP (VXLAN Tunnel End Point, VX...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/707H04L45/24
Inventor 俞国平
Owner NEW H3C TECH CO LTD
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