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


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


S12700 V200R010C00 Configuration Guide - Reliability

This document describes the configuration of BFD, DLDP, VRRP, SmartLink, CFM, EFM, Y.1731 and MAC swap loopback to ensure reliability on the device.
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).
Introduction to NSR

Introduction to NSR


After Non-Stop Routing (NSR) is configured on a local device with active and standby MPUs installed, the control plane of its neighbor cannot detect the fault occurring on the local device's control plane. Therefore, the key of NSR is that the control plane failover is independent of neighbors.


The demand for data, audio, and video services is growing, which imposes increasing requirements on IP network reliability. A provider edge (PE) can perform a switchover of active and standby MPUs if a single point of failure occurs or a maintenance operation (an upgrade, for example) is performed. The PE fails to converge routing information during a switchover of active and standby MPUs if its neighbor nodes fail simultaneously or these nodes do not support graceful restart (GR). NSR helps the PE converge routing information and ensures uninterrupted forwarding.


NSR prevents route flapping during a switchover of active and standby MPUs so that services are not affected. NSR satisfies user requirements for high IP network reliability.

Protocols That Can Be Used with NSR on the Switch

The following protocols can be used with NSR on the switch:
  • Eth-Trunk

  • E-Trunk

  • IS-IS

  • OSPF

  • OSPFv3

  • BGP

  • BGP4+

  • PIM

  • MSDP

  • MVPN

  • IPv4/IPv6 L3VPN

  • RSVP

  • LDP

  • BFD

  • VRRP

Updated: 2019-08-21

Document ID: EDOC1000142090

Views: 101267

Downloads: 113

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