Message forwarding method and device

Abstract

The embodiment of the invention discloses a message forwarding method and device, relates to the technical field of communication and can solve the problem that business of a host is influenced due to the fact that when the number of the hosts accessing a gateway is excessive, host forwarded table items needing to be stored exceed the capacity of a forwarding table of the gateway, and after the gateway can not search the forwarding table item corresponding to certain host, messages sent by the host are directly discarded. The method provided by the invention is applied to VXLAN. The VXLAN comprises a first gateway and a second gateway of which total forwarding table capacity is greater than a preset value. After the first gateway receives to-be-forwarded messages which are sent by the hosts, whether the forwarding table items corresponding to the hosts are stored in the first gateway or not is judged. When the forwarding table items corresponding to the hosts are not stored in the first gateway, whether a capacity proportion of the current forwarding table capacity of the first gateway in the total forwarding table capacity of the first gateway is greater than or equal to a preset proportion or not is judged, and when the capacity proportion is greater than or equal to the preset proportion, the to-be-forwarded messages are sent 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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