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A kind of bier multicast unicast transmission method and system in bier domain

A transmission method and unicast technology, applied in transmission systems, electrical components, etc., can solve problems such as inability to implement MAC address verification and potential security risks, prevent network flooding and other attacks, reduce multicast traffic, and save space. The effect of resources

Active Publication Date: 2022-03-01
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of encapsulating the Layer 2 header into unicast is mainly to reduce the flooding of multicast traffic and the risk of being attacked, but it is directly encapsulated in the form of system unicast MAC, which cannot realize MAC address verification and has potential security risks.

Method used

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  • A kind of bier multicast unicast transmission method and system in bier domain
  • A kind of bier multicast unicast transmission method and system in bier domain

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Embodiment Construction

[0033] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] The embodiment of the present invention provides a kind of unicast transmission method of BIER multicast in BIER domain, comprises the following steps:

[0035] When the ingress device in the BIER domain receives a common L3 multicast message, it encapsulates the BIER header to generate a BIER multicast message;

[0036] When the ingress device in the BIER domain or other devices in the domain get the BIER multicast message, if there is no next-hop unicast MAC address entry, the ARP MISS / Request mechanism will be triggered, and the next-hop list will be generated according to the reply of the next-hop device. broadcast MAC address entry, if it exists, it will not be triggered; the next-hop unicast MAC address read from the next-hop unicast MAC address entry will be encapsulated into the BIER multicast packet as a layer 2 header and sent ...

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Abstract

The invention discloses a unicast transmission method and system for BIER multicast in a BIER domain, and relates to the technical field of BIER multicast. address entry, triggers the ARP MISS / Request mechanism, and generates a next-hop unicast MAC address entry according to the reply of the next-hop device; encapsulates the next-hop unicast MAC address as a Layer 2 header into the BIER group broadcast When the next-hop device receives the BIER multicast message, it checks the Layer 2 unicast MAC address of the BIER multicast message, discards the illegal message, and realizes BIER multicast in BIER Unicast transmission within the domain reduces network multicast traffic. Combined with the characteristics of multicast unidirectional transmission, the next-hop unicast MAC address entry is generated unidirectionally to save space resources. The receiving end performs unicast MAC address verification to prevent network flooding and attacks.

Description

technical field [0001] The invention relates to the technical field of BIER multicast, in particular to a unicast transmission method and system for BIER multicast in a BIER domain. Background technique [0002] With the development of large video services such as Internet video, VR, and AR, the demand for multicast traffic replication within DCs and between DCs is increasing rapidly, and traditional multicast technologies can no longer meet the needs of new service development. BIER (Bit Indexed Explicit Replication, Bit Indexed Explicit Replication) technology provides a very simplified way to implement multicast traffic forwarding in the intermediate network. On the control plane, BIER assigns a unique bit identifier to each node in the network domain, and floods it in the BIER domain through the IGP extension protocol. Each node generates a BIER forwarding table based on the IGP topology and BIER extension information of the IGP. The local BIER The forwarding table entr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L45/16H04L45/74
CPCH04L45/16H04L45/74
Inventor 赵继诚
Owner FENGHUO COMM SCI & TECH CO LTD