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.


NE40E V800R010C00 Configuration Guide - MPLS 01

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).
Configuring the LDP GR Helper

Configuring the LDP GR Helper

You can configure a device to function as a GR Helper to help a neighbor with the LDP GR process.

Usage Scenario

In LDP GR, a Restarter, with the help of the Helper, ensures uninterrupted forwarding during an active main board (AMB)/standby main board (/SMB) switchover or when a protocol is restarted.

Without GR, during an AMB/SMB switchover or a system upgrade, the peers may tear down LSPs because an LDP session goes Down. This causes short-time traffic interruptions. With LDP GR, the labels are the same after the unexpected AMB/SMB switchover or a protocol restart. In addition, the LDP session and LSP can be restored after the AMB/SMB switchover or system upgrade, which helps transmit MPLS traffic properly without interruptions.

By default, NSR is used on a device with double main control boards installed.


LDP only supports the GR Helper.

Pre-configuration Tasks

Before configuring LDP GR, complete the following tasks:

  • Configure IGP GR.

  • Configure a local LDP session.

Configuration Procedures

Figure 4-10  LDP GR configuration
Updated: 2018-07-12

Document ID: EDOC1100028530

Views: 102156

Downloads: 336

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