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.


Configuration Guide - IP Unicast Routing

CloudEngine 12800 and 12800E V200R002C50

This document describes the configurations of IP Unicast Routing, including IP Routing, Static Route, RIP, RIPng, OSPF, OSPFv3, IPv4 IS-IS, IPv6 IS-IS, BGP, Routing Policy, and PBR.

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 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 } [ index index-number ] { 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 } [ index index-number ] { 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 details about regular expressions, see "Overview of CLIs" in CloudEngine 12800 and 12800E Series Switches - Configuration Guide - Basic Configuration.

  3. Run commit

    The configuration is committed.

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 the configured community filter.

Updated: 2019-03-21

Document ID: EDOC1000166601

Views: 271370

Downloads: 161

Average rating:
This Document Applies to these Products

Related Version

Related Documents

Previous Next