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.


CLI-based Configuration Guide - IP Unicast Routing

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R009

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 an AS_Path Filter

Configuring an AS_Path Filter


An AS_Path filter is used to filter routes based on the AS_Path attributes of BGP routes. If you do not want to receive routes of a specified AS number, configure an AS_Path filter based on the specified AS number. On a complex network, multiple ACLs or IP prefix lists must be configured to filter BGP routes. This can be a complicated process; configuring an AS_Path filter can simplify the configuration.


  1. Run system-view

    The system view is displayed.

  2. Run ip as-path-filter { as-path-filter-number | as-path-filter-name } { permit | deny } regular-expression

    An AS_Path filter is configured.

    In the preceding command, regular-expression indicates that the AS_Path filter uses a regular expression to define matching rules. For further details about regular expressions, see "CLI Overview" in the Huawei AR Seriesrouter - Configuration Guide - Basic Configuration.

Verifying the Configuration

  • Run the display ip as-path-filter [ as-path-filter-number | as-path-filter-name ] command to check information about a configured AS_Path filter.

Updated: 2019-12-27

Document ID: EDOC1000174069

Views: 187670

Downloads: 316

Average rating:
This Document Applies to these Products

Related Version

Related Documents

Previous Next