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Message forwarding method and device

A message forwarding and message technology, applied in the field of communications, can solve problems such as network resource waste, and achieve the effect of saving network resources

Active Publication Date: 2022-01-11
NEW H3C SECURITY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, if BIER packets are sent based on BIFT, the destination BFER will repeatedly receive multiple BIER packets, resulting in a waste of network resources.

Method used

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  • Message forwarding method and device

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art based on this application belong to the scope of protection of this application.

[0029] For ease of understanding, the words appearing in the embodiments of the present application are explained below.

[0030] Sub Domain (Sub Domain, SD): BIER message forwarding is based on SD.

[0031] Set Identity (SI): When the number of BFR-ids exceeds the range that can be represented by the bit string length (BitStringLength, BSL), it needs to be represented by multiple Sets, and each Set has an ID. For example, if the BFR-id set is {1, 2, 3..., 512}, and the BSL is 256, two S...

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PUM

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Abstract

The embodiment of the invention provides a message forwarding method and device, the method is applied to a BIER node, and the BIER node comprises a native BIFT and a group of derived BIFTs corresponding to the native BIFT. For the BFER indicated by each BFR-id, the number of equivalent paths formed by a neighbor router NBR reaching the BFER in each derived BIFT and the BFER is smaller than or equal to a preset value, and the total number of equivalent paths formed by the NBR reaching the BFER in one group of derived BIFTs and the BFER is equal to the number of equivalent paths formed by the NBR reaching the BFER in the native BIFT and the BFER. The method comprises the following steps: receiving a first BIER message, wherein the first BIER message comprises a first bit string; selecting one derived BIFT from the group of derived BIFTs to serve as a target derived BIFT; performing bit AND operation processing on the first bit string and each bit string in the target derived BIFT to obtain a second bit string; and generating a second BIER message based on the second bit string, and forwarding the second BIER message. By applying the technical scheme provided by the embodiment of the invention, network resources can be saved.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a message forwarding method and device. Background technique [0002] Bit Indexed Explicit Replication (BIER) technology is a multicast technology. In BIER technology, each BIER forwarding edge router ((BIER Forwarding Edge Router, BFER) is configured with a BIER forwarding router identity (BIER Forwarding Router identity, BFR-id). Each BIER node in the network learns the BFR-id of each BFER id, and establish a corresponding Bit Index Forwarding Table (Bit Index Forwarding Table, BIFT), and then send a BIER message to each BFER based on the BIFT. [0003] However, multiple Equal Cost Multi Paths (ECMP) may exist between every two BIER nodes. In this case, if BIER packets are sent based on BIFT, the destination BFER will repeatedly receive multiple BIER packets, resulting in waste of network resources. Contents of the invention [0004] The purpose of the...

Claims

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Application Information

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IPC IPC(8): H04L45/74H04L45/16
CPCH04L45/74H04L45/16
Inventor 叶金荣
Owner NEW H3C SECURITY TECH CO LTD
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