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Multicast message forwarding method and device

A technology of multicast message and forwarding method, which is applied in the field of network communication and can solve problems such as the inability to realize ECMP load sharing

Active Publication Date: 2018-06-29
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] During VXLAN forwarding of Layer 2 known multicast packets, when VTEP performs VXLAN encapsulation on known multicast packets, if multiple equal-cost tunnel next hops (ECMP: Equal Cost Multiple Path) are found, VTEP Only fixedly designate the MAC address of the next hop of one of the tunnels as the outer destination MAC address in the VXLAN encapsulation, and ECMP load sharing cannot be realized.

Method used

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  • Multicast message forwarding method and device

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] see image 3 , image 3 The flow chart of the method provided by the present invention. This process applies to VTEP. Such as image 3 As shown, the process may include the following steps:

[0024] Step 301, receiving a known multicast packet.

[0025] Step 302, when it is determined to forward the known multicast message through the VXLAN tunnel between this VTEP and the remote VTEP, select a tunnel next hop from the N tunnel next hops of the VXLAN tunnel according to the uniform load sharing method, and pass The selected tunnel next hop forwards known multicast packets.

[0026] As an embodiment, in step 302, selecting a tunnel next hop from the N tunnel next hops of the VXLAN tunnel according to the uniform load sharing method inc...

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Abstract

The invention provides a multicast message forwarding method and device. According to the method and the device, a tunnel next hop is selected from N tunnel next hops of a VXLAN tunnel in a uniform load sharing mode, so finally different known multicast messages are uniformly shared by the tunnel next hops of the VXLAN tunnel.

Description

technical field [0001] The present application relates to network communication technology, in particular to a multicast message forwarding method and device. Background technique [0002] Virtual eXtensible Local Area Network (VXLAN: Virtual eXtensible Local Area Network), encapsulates Layer 2 packets with Layer 3 protocols to realize the expansion of Layer 2 networks within the scope of Layer 3. figure 1 The VXLAN network model is shown, and the VXLAN network includes: [0003] VXLAN Tunnel Endpoints (VTEP: VXLAN Tunnel Endpoints), the edge device of the VXLAN network, is the starting point and the ending point of the VXLAN tunnel. The packet is decapsulated and processed. [0004] VXLAN Network Identifier (VNI: VXLAN Network Identifier) ​​is a user identifier similar to a VLAN ID. A VNI represents a tenant, and virtual machines belonging to different VNIs cannot directly communicate at Layer 2. [0005] A VXLAN tunnel is used to transmit VXLAN-encapsulated packets. It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46H04L12/801H04L12/803H04L12/911
CPCH04L12/4633H04L12/4641H04L47/125H04L47/15H04L47/825
Inventor 程剑锋高瑞昌
Owner NEW H3C TECH CO LTD