Method and apparatus for inhibiting host migration
A host and controller technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as busy OpenFlow controllers, unavailable SDN networks, and inability to respond to SDN networks normally, so as to avoid host migration and improve reliability sexual effect
Active Publication Date: 2018-07-20
NEW H3C TECH CO LTD
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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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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0041] In this embodiment, the OpenFlow controller identifies the VRRP group to which the multicast VRRP message received by each port of the edge switching device belongs, and thus monitors the VRRP group connected to each port of the edge switching device; and, for The identified access ports have all ports in the same VRRP group, and the OpenFlow controller selects a port from it, and changes the VRRP group to issue only the flow table with the selected port as the outgoing port. Binding into a VRRP group on multiple ports on one of the selected ports. Therefore, by binding the VRRP group to a selected port, host migration caused by multicast VRRP packets being reported to the OpenFlow controller from different ports can be avoided. Furthermore, the...
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The invention discloses a method and device for suppressing host migration. Based on the present invention, the OpenFlow controller identifies the VRRP group to which the multicast VRRP message received by each port of the edge switching device belongs, so that the VRRP group accessed at each port can be monitored; and the OpenFlow controller only Issue a flow table with a selected port among all the ports connected to it as the outgoing port, so that VRRP groups connected to multiple ports can be bound to a selected port among them. Therefore, by binding the VRRP group to a selected port, the present invention can avoid host migration caused by reporting multicast VRRP messages to the OpenFlow controller from different ports. Moreover, for all the ports connected to each VRRP group, a selected port may be recorded by the OpenFlow controller as the active port, and the remaining ports may be recorded by the OpenFlow controller as standby ports. Therefore, when the active port bound to the VRRP group is abnormal, the OpenFlow controller can use its recorded standby port to implement active-standby switchover.
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...
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IPC IPC(8): H04L12/741H04L12/713H04L45/74H04L45/586
Inventor 黄李伟王海
Owner NEW H3C TECH CO LTD