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).
Setting Switching and Deletion Delays

Setting Switching and Deletion Delays

The switching and deletion delays are set to ensure that a CR-LSP is torn down only after a new CR-LSP has been established, which prevents traffic interruption.


MPLS TE uses a make-before-break mechanism. If attributes of an MPLS TE tunnel, such as bandwidth or path change, a new CR-LSP with new attributes is established. Such a CR-LSP is called a Modified CR-LSP. The new CR-LSP must be established before the original CR-LSP, also called the primary CR-LSP, is torn down. This prevents data loss and additional bandwidth consumption during traffic switching.

If a forwarding entry associated with the new CR-LSP does not take effect after the original CR-LSP has been torn down, a temporary traffic interruption occurs.

The switching and deletion delays can be set on the ingress of the CR-LSP to prevent the preceding problem.


  1. Run:


    The system view is displayed.

  2. Run:


    The MPLS view is displayed.

  3. Run:

    mpls te switch-delay switch-time delete-delay delay-time

    The switching time and deletion delay time are set.

  4. Run:


    The configuration is committed.

Updated: 2018-07-12

Document ID: EDOC1100028530

Views: 101088

Downloads: 336

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