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An SDN-based cross-domain multicast method and device

A cross-domain, multicast technology, applied in the field of network communication, can solve problems such as waste of link bandwidth, and achieve the effect of avoiding forwarding and saving network bandwidth

Active Publication Date: 2021-06-01
ZHEJIANG UNIVIEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention proposes an SDN-based cross-domain multicast method and device, which are used to solve the problem of link bandwidth waste caused by unicast forwarding in the prior art when crossing non-multicast domains

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  • An SDN-based cross-domain multicast method and device
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  • An SDN-based cross-domain multicast method and device

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Embodiment Construction

[0020] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, and the following embodiments do not constitute a limitation of the present invention.

[0021] At present, software-defined network (SDN) has been widely used. SDN is a new type of network architecture. Its design concept is to separate the control plane of the network from the data forwarding Need to deploy. In the SDN network, the SDN controller is responsible for collecting network topology information, calculating the forwarding path of the service message generated by the host, and generating the forwarding table entry; and the SDN switch is based on the forwarding table issued by the SDN controller. forwarding.

[0022] In this embodiment, SDN switches are respectively deployed on the edge of the multicast domain. When the multicast stream needs to cross non-multicast domains, the SDN switch in the domain where ...

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Abstract

The invention discloses an SDN-based cross-domain multicast method and device. The SND controller receives the multicast source registration information sent by the first SDN switch and the multicast join information sent by the second SDN switch, and establishes a multicast group information table. item and multicast request information table item, according to the multicast group information table item and the multicast request information table item, generate a multicast-to-unicast table item and a unicast-to-multicast table item; send the multicast-to-unicast table item To the first SDN switch, notify the first SDN switch to divert traffic from the multicast source and convert the multicast message into a unicast message according to the multicast-to-unicast entry; send the unicast-to-multicast entry to the second SDN switch , informing the second SDN switch to convert the unicast packet sent by the first SDN switch into a multicast packet according to the unicast-to-multicast table entry. The invention realizes the multicast service across non-multicast domains, avoids the forwarding of a large amount of unicast traffic in the network, and saves the network bandwidth.

Description

technical field [0001] The invention belongs to the technical field of network communication, and in particular relates to an SDN-based cross-domain multicast method and device. Background technique [0002] With the development of the monitoring industry, many monitoring networks need to use the function of multicast distribution. However, a large multicast domain may be isolated by a network that does not support multicast. The network that does not support multicast is called a non-multicast domain. For example, the WAN in the Internet is generally a non-multicast domain. In the prior art, if the streaming media of a multicast source needs to be sent to a multicast domain across non-multicast domains, it is usually required to be converted to unicast by the streaming media server in the multicast domain where the multicast source is located. For communication across non-multicast domains. However, unicast data will not be re-converted to multicast after passing through ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/715H04L12/741H04L12/927H04L12/931H04L29/12H04L45/74H04L47/80
CPCH04L45/04H04L45/74H04L47/806H04L49/201H04L61/2503
Inventor 周迪任俊峰
Owner ZHEJIANG UNIVIEW TECH CO LTD