Method and device for message forwarding

Abstract

The embodiment of the present invention discloses a message forwarding method and device, which relate to the field of communication technology and can solve the problem that when the number of hosts accessed by the gateway is too large, the forwarding table items of the hosts that need to be stored will exceed the capacity of the forwarding table of the gateway. After the gateway cannot find the forwarding entry corresponding to a certain host, it will directly discard the packets sent by the host, which will affect the business of the host. The method of the present invention is used in VXLAN. VXLAN includes a first gateway and a second gateway whose total forwarding table capacity is greater than a preset value. After the first gateway receives the message to be forwarded sent by the host, it judges whether the The forwarding table entry corresponding to the host; when it is not stored, judge whether the capacity ratio of the current forwarding table capacity of the first gateway to the total forwarding table capacity of the first gateway is greater than or equal to the preset ratio; when the capacity ratio is greater than or equal to the preset ratio , and send the message to be forwarded to the second gateway.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a message forwarding method and device. Background technique [0002] Virtual extensible local area network (Virtual eXtensible Local Area Network, VXLAN) is a layer-2 protocol, which is mainly used to build large-scale layer-2 networks, and is suitable for the construction of layer-2 networks in modern data centers. Generally, VXLAN is divided into two layers, one is the backbone (spine) layer, and the devices on the spine layer generally have stronger forwarding capabilities and larger table entry specifications, because the traffic of the entire network will be forwarded through this device; the other layer It is the leaf (leaf) layer, that is, the access layer. The devices at the leaf layer have weak forwarding capabilities and small table item specifications, and are used to access the server. The table item specification refers to the number of forwarding table items...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for message forwarding, which can solve the problem that when the number of hosts accessed by the gateway is too large, the forwarding table items of the hosts that need to be stored will exceed the capacity of the forwarding table of the gateway, and the gateway cannot search After reaching the corresponding forwarding table entry of a certain host, the packet sent by the host will be directly discarded, which will affect the business of the host

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