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Message forwarding method and device from virtual local area network to virtual scalable local area network

A technology for extending local area network and virtual local area network, which is applied in the field of message forwarding and can solve the problem of inability to realize three-layer forwarding.

Active Publication Date: 2019-07-12
NEW H3C TECH CO LTD
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  • Description
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Problems solved by technology

[0003] for example, figure 1 In the network shown in the figure, after the packet sent by the PC is VXLAN-encapsulated at the non-gateway node and reaches the gateway node, the gateway node decapsulates the packet with VXLAN and finds that the destination MAC address of the packet is the MAC address of the gateway node. The gateway node performs Layer 3 forwarding on the decapsulated VXLAN packets, but it is limited to the forwarding logic of the hardware switching chip on the gateway node. Even if the hardware switching chip of the gateway node supports Layer 3 forwarding, it cannot implement Layer 3 forwarding. Layer 2 forwarding of packets whose destination MAC address is not the MAC address of the gateway node after VXLAN decapsulation

Method used

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  • Message forwarding method and device from virtual local area network to virtual scalable local area network
  • Message forwarding method and device from virtual local area network to virtual scalable local area network
  • Message forwarding method and device from virtual local area network to virtual scalable local area network

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Embodiment Construction

[0021] 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.

[0022] A general modular switch consists of a main control board (main board), an interface board (I / O board), and a fabric board (fabric board). The main control board is a single board used to implement protocol stack calculation, forwarding table item delivery and control, and device management. The interface board is a single board for implementing data packet forwarding (including internal forwarding and external forwarding). The network board is a single board used to realize the inter-board and inter-chip forwarding of data packets and control packets within the device. Wherein, the chip on the network board only has the message forwarding function, and is used for transferring messages between different interface boards.

[0023] The str...

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Abstract

This application provides a message forwarding method and device from a virtual local area network to a virtual scalable local area network. In the present invention, the network board of the gateway VXLAN switch no longer uses a network chip with only message forwarding function, but uses a chip with forwarding function and entry function, such as the same switching chip as the interface board. In the present invention, the gateway VXLAN switch realizes the three-layer gateway function of VXLAN to realize message forwarding from VLAN to VXLAN, and the whole process is only executed inside the VXLAN switch, without wasting any bandwidth resources, and achieves line-speed forwarding of messages of.

Description

technical field [0001] The present application relates to network communication technology, in particular to a message forwarding method and device from a virtual local area network (VLAN: Virtual Local Access Network) to a virtual extensible local area network (VXLAN: Virtual eXtensible Local Access Network). Background technique [0002] At present, even if the hardware switching chip of the gateway node supports Layer 3 forwarding, the forwarding logic of the hardware switching chip does not allow Layer 3 forwarding and can only perform Layer 2 forwarding. [0003] for example, figure 1 In the network shown in the figure, after the packet sent by the PC is VXLAN-encapsulated at the non-gateway node and reaches the gateway node, the gateway node decapsulates the packet with VXLAN and finds that the destination MAC address of the packet is the MAC address of the gateway node. The gateway node performs Layer 3 forwarding on the decapsulated VXLAN packets, but it is limited ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/741H04L12/46H04L29/12H04L45/74H04L49/111
CPCH04L61/2596H04L49/25H04L12/4641H04L12/4625H04L49/3009H04L49/30H04L2012/4629H04L12/4633H04L45/745H04L61/59H04L2101/622H04L12/4645H04L61/2592
Inventor 张洋况玲王明辉张鸿源胡海闻广亮
Owner NEW H3C TECH CO LTD
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