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Traffic forwarding method and network equipment

A technology for network equipment and traffic forwarding, applied in the field of communications, which can solve problems such as large delay, inability to guarantee link quality, and packet loss

Active Publication Date: 2022-06-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, SPE 2 sends traffic to NPE 1 through broadcast, which will cause packet loss
In addition, since UPE and SPE belong to the same region, and SPE and NPE are installed between different regions, there are usually transmission equipment such as microwaves for inter-regional long-distance transmission, which is greatly affected by factors such as weather. Therefore, the link between SPE and NPE Road quality cannot be guaranteed
If the link quality between the SPE and the NPE is poor, for example, the delay is large or a small amount of packet loss persists, the quality of service transmission will be affected.

Method used

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  • Traffic forwarding method and network equipment
  • Traffic forwarding method and network equipment
  • Traffic forwarding method and network equipment

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Embodiment Construction

[0055] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0056] For ease of understanding, the following briefly introduces the terms involved in this application.

[0057] 1. Layer 2 virtual private network (L2VPN) network

[0058]L2VPN technology is launched to fully utilize Internet Protocol (IP) or Multi-Protocol Label Switching (MPLS) network resources to support data services, using IP or MPLS network as Layer 2 data link packet ( Such as asynchronous transfer mode (asynchronous transfer mode, ATM) cell, frame relay (frame relay, FR), Ethernet frame, etc.) to provide transmission channels, in order to achieve the integration of IP network and data network. L2VPN has the following two business models:

[0059] Virtual Private Wire Service (VPWS): VPWS refers to imitating ATM, Frame Relay, Ethernet, low-speed time division multiplexing as closely as possible in a packet switched network (PSN) , TDM)...

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Abstract

The present application provides a flow forwarding method and network equipment, which are beneficial to switch the flow to a pseudowire PW with better transmission quality and improve service transmission quality. The method includes: the first network device determines that the transmission quality of the first PW does not meet a preset condition, switches the forwarding state of the first PW from the first state to the second state, and switches the forwarding state of the second PW from the third state To the fourth state, the first network device connects to the third network device through the first PW, and connects to the second network device through the second PW; when the forwarding state of the first PW is the first state and the forwarding state of the second PW is the third state, the first network device forwards traffic to the third network device along the first PW; when the forwarding state of the first PW is the second state and the forwarding state of the second PW is the four state, the first network device With the second PW, traffic is forwarded to the third network device through the second network device.

Description

technical field [0001] The present application relates to the field of communications, and in particular, to a traffic forwarding method and network device in the field of communications. Background technique [0002] Layer 2 virtual private network (L2VPN) network has two modes: virtual private line service (virtual private wire service, VPWS) and virtual private LAN service (virtual private LAN service, VPLS, (local area network, LAN). The link between nodes in L2VPN is called pseudo wire (PW). PW is a general term for various simulation technologies in the communication field. Peer-to-peer links. [0003] In a scenario where a customer edge (CE) at one end is single-homed and CE at the other end is dual-homed, it mainly includes multi-segment pseudo wire (MS-PW), PW redundancy, and VPLS. It is widely used in IP radio access network (IPRAN), metro bearer and other networking. Specifically, a user-end provider edge (UPE) establishes a VPWS with two operator-side provider...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L43/0852H04L43/087H04L43/0829H04L43/08H04L41/0668
CPCH04L43/0852H04L43/087H04L43/0829H04L43/08H04L41/0668
Inventor 杨振兴王海波曹银龙张耀坤
Owner HUAWEI TECH CO LTD