No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - Reliability

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of Reliability, including BFD Configuration, VRRP Configuration, DLDP Configuration, Smart Link and Monitor Link Configuration, EFM Configuration, and CFM Configuration.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Overview of BFD

Overview of BFD

Definition

BFD is a unified detection mechanism used to quickly detect network-wide link faults and monitor IP connectivity.

Purpose

To minimize the impact of device faults on services and improve network availability, a network device must be able to quickly detect faults in communication with adjacent devices. Hardware detection mechanisms, such as Synchronous Digital Hierarchy (SDH) alarms, can detect faults but are not provided by all forms of media. Hello packet detection mechanisms of the upper-layer routing protocol are used by applications to detect faults, but the detection duration is more than 1 second, which is too long for some applications. In addition, if no routing protocol is deployed on a small-scale Layer 3 network, the Hello mechanism cannot be used.

BFD addresses these issues and provides fast fault detection independent of media and routing protocols. BFD provides the following benefits:

  • Quickly detect link faults between neighboring network devices on interfaces, data links, or forwarding engines.

  • Provide uniform detection for all media and protocol layers in real time.

Translation
Download
Updated: 2019-04-03

Document ID: EDOC1100075366

Views: 15183

Downloads: 39

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next