SDN network multichannel line bandwidth dynamic allocation method

Abstract

The invention discloses a SDN network multichannel line bandwidth dynamic allocation method. A SDN controller firstly creates a plurality of vtep ports in network equipment switch in a mode of issuingan instruction, uses the vtep points as tunnel ''endpoints'', i.e., ''accesses'' of tunnels, which are used for network data to pass through, designates an IP address to tunnel opposite-end equipment, and finally, sets a bandwidth upper limit of each port according to a message parameter; and after creation of the tunnels is completed, the SDN controller issues an OpenFlow flow table to the network equipment to control a network data packet forwarding behavior. The SDN network multichannel line bandwidth dynamic allocation method sufficiently utilizes a line bandwidth and is automatic in bandwidth allocation; channels with different bandwidth sizes are used for different services to use; and service quality, flexibility and efficiency of the integral network are improved.

Description

technical field [0001] The invention relates to the technical field of network equipment, in particular to a method for dynamically allocating bandwidth of multi-channel lines in an SDN network. Background technique [0002] Under current technical conditions, the way network devices divide link bandwidth is too "rigid", and the device port bandwidth can only be configured through commands. Once configured, all traffic on the device port (virtual tunnel, other device service traffic, forwarding traffic) must not exceed the set bandwidth upper limit. [0003] Under the existing solution, taking Cisco network equipment as an example, if you want to limit the bandwidth of a certain port on the router / switch (assuming it is 1000M), you need to manually enter the configuration command speed 1000. After the configuration is complete, the upper limit of all traffic passing through this port (including service traffic provided by the device itself and forwarded traffic) is 1000Mbit...

AI Technical Summary

Problems solved by technology

First, suppose the upper limit of the physical bandwidth of a link is 10G. When the network device limits the upper limit of 1G bandwidth to a certain port, only the maximum 1G traffic is transmitted on the link, which means that 9G bandwidth is wasted. Secondly, except The traffic provided to the access device and the service traffic of the network device itself will occupy the bandwidth allocated for the user when passing through this port, and the spare bandwidth cannot be used. Finally, when the bandwidth demand of the access device changes, it must be directly or indirectly The way to re-plan the upper limit of the port bandwidth for network devices in the form of input commands is too "rigid" and it is difficult to adapt to the increasingly changing needs of modern times.

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