Method and device for suppressing host migration

Abstract

The invention discloses a method and a device for suppressing host migration. The method comprises the following steps that: an OpenFlow controller identifies a VRRP (Virtual Router Redundancy Protocol) group to which multicast VRRP messages received on each port of edge switch equipment belongs so as to monitor VRRP groups accessed on each port; and the OpenFlow controller only issues a flow table which takes one selected port in all accessed ports as an output port for each VRRP group so as to bind the VRRP groups accessed to a plurality of ports on one selected port. By binding the VRRP groups on one selected port, host migration caused by reporting of the multicast VRRP messages to the OpenFlow controller respectively from different ports can be avoided. Moreover, for all ports accessed by each VRRP group, one selected port can be recorded as a primary port by the OpenFlow controller, and the remaining ports can be recorded as secondary ports by the OpenFlow controller. When the primary port to which the VRRP groups are bound is abnormal, the OpenFlow controller can be used for realizing primary-secondary switching by using the recorded secondary ports.

Description

technical field [0001] The present invention relates to the OpenFlow (open flow) technology in the SDN (Software Defined Network, software defined network) architecture, and in particular to a method and device for suppressing host migration suitable for the OpenFlow controller in the SDN architecture. Background technique [0002] The SDN architecture uses OpenFlow technology to separate the control plane and data plane of network devices, thereby realizing flexible control of network traffic. Correspondingly, the SDN architecture includes an OpenFlow controller and an OpenFlow switching device, wherein: the OpenFlow controller and the OpenFlow switching device communicate through the OpenFlow channel, and the OpenFlow controller generates a flow table according to the user's configuration or a dynamically running protocol and sends it to An OpenFlow switching device. The OpenFlow switching device processes packets according to the flow table issued by the OpenFlow controll...

AI Technical Summary

Problems solved by technology

However, when a VRRP group is connected to multiple ports of an edge switching device on the SDN network at the same time (different ports of the same edge switching device or ports of different edge switching devices), the multicast VRRP packet sent by the VRRP group They will be reported to the OpenFlow controller from different ports, which will cause the OpenFlow controller to mistakenly believe that host migration has occurred between different ports, and thus frequently update the issued flow table, which will cause the OpenFlow controller to be busy and unable to respond to SDN normally. The traffic in the network may even cause the SDN network to be unavailable

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