![Huawei Quidway NetEngine40E Скачать руководство пользователя страница 1016](http://html.mh-extra.com/html/huawei/quidway-netengine40e/quidway-netengine40e_configuration-manual-reliability_1694531016.webp)
10.1 Bit-Error-Triggered Protection Switching Overview
Bit-error-triggered protection switching minimizes the impact of line bit errors on broadband
services, improving the reliability of bearer networks.
10.1.1 Introduction
Bit-error-triggered protection switching triggers protection switching based on bit error events,
meeting high network reliability requirements.
The demand for network bandwidth is rapidly increasing as mobile services evolve from
narrowband voice services to integrated broadband services, including voice, streaming media,
and high speed downlink packet access (HSDPA) services. Meeting the bandwidth demand with
traditional bearer networks dramatically increases carriers' operational costs. To tackle the
challenges posed by this rapid broadband-oriented development, carriers urgently need mobile
bearer networks that feature flexibility, low costs, and high efficiency. IP-based mobile bearer
networks are an ideal choice. IP radio access networks (RANs), a type of IP-based mobile bearer
network, are increasingly widely used.
When IP RANs carry broadband services, they have higher reliability requirements than
traditional bearer networks. Traditional fault detection mechanisms cannot trigger protection
switching based on random bit errors. As a result, in extreme cases, bit errors may degrade or
even interrupt services on an IP RAN. To solve this problem, configure bit-error-triggered
protection switching.
10.1.2 Bit-Error-Triggered Switching-related Functions Supported
by the NE80E/40E
The NE80E/40E supports various bit-error-triggered switching-related functions, such as
MPLS-TP OAM bit error advertisement, an association between bit errors and IGP routes, an
association between bit errors and static routes, bit-error-triggered RSVP-TE tunnel switching,
bit-error-triggered switching for PW redundancy, and bit-error-triggered L3VPN switching.
describes implementation and usage scenarios of bit-error-triggered switching-
related functions, as well as relationships between the functions.
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
10 Bit-Error-Triggered Protection Switching Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
999