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Multicast data transmission method and related equipment

A technology of multicast data and transmission method, which is applied in the field of communication and can solve the problems of long data transmission delay and low transmission reliability

Active Publication Date: 2022-01-14
BEIJING HUAWEI DIGITAL TECH
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Problems solved by technology

[0003] However, when the multicast data is real-time data, this transmission method can easily lead to the problem that once the BIER message is lost, the edge device cannot receive the multicast data, and requesting retransmission will cause a large data transmission delay.
Therefore, the transmission reliability of the multicast data is low

Method used

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  • Multicast data transmission method and related equipment
  • Multicast data transmission method and related equipment
  • Multicast data transmission method and related equipment

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Embodiment Construction

[0105] For the convenience of explanation, the embodiment of the present application also provides a schematic diagram of a network structure, which can be a data center network or other networks, such as figure 1 As shown, the network structure may include a head-end device, that is, a device that receives multicast data, taking the first device as an example; the network structure takes two anchor devices as an example, which are the first anchor device and the second An anchoring device; wherein, the first device is connected to the first anchoring device and the second anchoring device through a point-to-point tunnel, that is, the first device and the first anchoring device and the second anchoring device can also be There are other network devices, but they all forward packets based on point-to-point tunnels; both the first anchor device and the second anchor device are connected to the second device and the third device, and the second device and the third device are conn...

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Abstract

A multicast data transmission method and related equipment, in the multicast data transmission method, the first device can obtain at least two BIER messages for different bit index-based explicit copy BIER labels on the same multicast data encapsulation, The BIER label contained in each BIER message is different but the set of destination addresses is the same, and the BIER label is also used in the BIER domain for network devices other than each edge device to establish a forwarding table for a route to each edge device, that is, the Each network device in the BIER domain can establish forwarding tables corresponding to different BIER labels, so that multicast data can reach the same edge device along different forwarding tables, so that these edge devices can receive multiple BIER packets from different paths. Selecting to receive a BIER message realizes the protection mechanism of multiple transmission and selective reception, which is beneficial to improve the reliability of multicast data transmission.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a multicast data transmission method and related equipment. Background technique [0002] Bit Indexed Explicit Replication (BIER) is a multicast technology. In the BIER multicast technology, each edge device in the network can configure a value such as 1-255 as the BIER forwarding router ID (BIER Forwarding Router ID, BFR-ID), and notify the BFR-ID of these edge devices to each node in the network. In this way, the BIER header in the BIER message can carry a bit string, and each bit in the bit string is used to identify an edge device with a specific BFR-ID, for example, the lowest bit of the bit string is used to identify BFR-ID=1 edge device; the second bit from right to left in the bit string is used to identify the edge device with BFR-ID=2, and so on. Therefore, each node in the network domain can determine the next hop of the BIER message according t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L45/16H04L45/50H04L12/18
CPCH04L45/16H04L45/50H04L12/18
Inventor 谢经荣
Owner BEIJING HUAWEI DIGITAL TECH
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