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Multicast realizing method and apparatus for edge network

An edge network and multicast group technology, applied in the field of network communication, can solve problems affecting the performance of network equipment, reduce processor load and improve performance

Inactive Publication Date: 2015-11-25
HANGZHOU DT DREAM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the number of multicast groups is large, listening to multicast protocol messages and maintaining multicast forwarding table items brings a heavy burden to the CPU (CentralProcessUnit, central processing unit) of the network device, which affects the performance of the network device

Method used

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  • Multicast realizing method and apparatus for edge network
  • Multicast realizing method and apparatus for edge network
  • Multicast realizing method and apparatus for edge network

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Embodiment Construction

[0021] The multicast protocol includes the group membership protocol between the member hosts of the multicast group and the router, and the multicast routing protocol between the routers. Group membership protocols include IGMP (Internet Group Management Protocol, Internet Group Management Protocol), etc., which are used to establish and maintain multicast group membership information on the router's direct network segment. Multicast routing protocols include intra-domain multicast routing protocols and inter-domain multicast routing protocols. Intra-domain multicast routing protocols include PIM-SM (Protocol Independent Multicast-Sparse Mode, sparse mode independent multicast protocol), PIM-DM (Protocol Independent Mode Independent Multicast Protocol), DVMRP (DistanceVectorMulticastRoutingProtocol, Distance Vector Multicast Routing Protocol), etc., are used to use certain multicast routing algorithms to construct a multicast distribution tree for multicast data packets accord...

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Abstract

The invention provides a multicast realizing method and apparatus for an edge network, and the multicast realizing method and apparatus are applied on an SDN controller of the edge network. The multicast realizing method includes that the inlet port of a downlink multicast protocol message of a multicast set reported by a network device serves as an uplink port of the multicast set on the network device, the inlet port of an uplink multicast protocol message of the multicast set reported by the network device serves as a downlink port of the multicast set on the network device, the topological structure of the multicast set in the edge network is generated according to the uplink port and the downlink port of the multicast set on the network device and the global topological structure of the edge network, the forwarding path of the multicast set in the edge network is determined according to the topological structure of the multicast set in the edge network, and flow meter for forwarding the multicast set flow is transmitted to the network device on a forwarding path. The processor load of the network device is reduced, and the performance of the network device is improved.

Description

technical field [0001] The present application relates to the technical field of network communication, and in particular to a method and device for implementing multicast in an edge network. Background technique [0002] The multicast technology is one of the three modes of IP (Internet Protocol, Internet Protocol) network data transmission. In the multicast mode, the sender of the information is the multicast source, the receivers of the information are the members of the same multicast group, and the router supporting the transmission of multicast information is the multicast router. The multicast source sends a piece of information to a multicast group, and the multicast router in the network copies and forwards the information according to the distribution of members in the multicast group, and finally reaches the members of the multicast group. [0003] On the forwarding path of multicast traffic from a multicast router to a multicast group member, the network devices...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/18
Inventor 贾涛
Owner HANGZHOU DT DREAM TECH
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