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 a Community Filter

Configuring a Community Filter


The community attribute identifies routes with the same characteristics without considering IP prefixes and AS numbers. Configuring community filters and community attributes simplifies route management when it is inconvenient to use the IP prefix list or AS_Path filter. For example, a company branch needs to receive routes only from its headquarters and from branches in adjacent countries. In this case, you can configure different community attributes for each of the branches. Routes in the original branch can then be managed based on community attributes, without considering IP prefixes and AS numbers of routes in different countries.

Community filters are classified into basic and advanced community filters. An advanced community filter supports regular expressions and is more flexible than a basic community filter.


  1. Run system-view

    The system view is displayed.

  2. Run ip community-filter

    A community filter is configured.

    • To configure a basic community filter, run the ip community-filter { basic comm-filter-name | basic-comm-filter-num } { permit | deny } [ community-number | aa:nn | internet | no-export-subconfed | no-advertise | no-export ] &<1-20> command.

    • To configure an advanced community filter, run the ip community-filter { advanced comm-filter-name | adv-comm-filter-num } { permit | deny } regular-expression command.

    In the preceding command, regular-expression indicates that the community 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 community-filter [ basic-comm-filter-num | adv-comm-filter-num | comm-filter-name ] command to check information about a configured community filter.

Updated: 2019-12-27

Document ID: EDOC1000174069

Views: 198350

Downloads: 354

Average rating:
This Document Applies to these Products

Related Version

Related Documents

Previous Next