Community List

Community lists are BGP route filtering tools that define collections of community values used to group routes with common characteristics for policy implementation. They enable administrators to match and manipulate BGP routes based on community attributes, providing flexible mechanisms for implementing routing policies, traffic engineering, and service differentiation. Community lists support both standard (well-known) and extended community formats, allowing for sophisticated route tagging and filtering strategies in complex BGP deployments.

Diagram

Classes

iosxe

Name	Type	Constraint	Mandatory	Default Value
devices	List	devices	No
device_groups	List	device_groups	No
global	Class	global	No

devices (iosxe)

Name	Type	Constraint	Mandatory	Default Value
configuration	Class	configuration	No

device_groups (iosxe)

Name	Type	Constraint	Mandatory	Default Value
configuration	Class	configuration	No

global (iosxe)

Name	Type	Constraint	Mandatory	Default Value
configuration	Class	configuration	No

configuration (iosxe.devices)

Name	Type	Constraint	Mandatory	Default Value
community_lists	Class	community_lists	No

community_lists (iosxe.devices.configuration)

Name	Type	Constraint	Mandatory	Default Value
expanded	List	expanded	No
standard	List	standard	No

expanded (iosxe.devices.configuration.community_lists)

Name	Type	Constraint	Mandatory	Default Value
name	String		Yes
entries	List	entries	No

standard (iosxe.devices.configuration.community_lists)

Name	Type	Constraint	Mandatory	Default Value
name	String		Yes
entries	List	entries	No

entries (iosxe.devices.configuration.community_lists.expanded)

Name	Type	Constraint	Mandatory	Default Value
action	Choice	permit, deny	Yes
regex	String		Yes

entries (iosxe.devices.configuration.community_lists.standard)

Name	Type	Constraint	Mandatory	Default Value
action	Choice	permit, deny	Yes
communities	List	String	Yes

Examples

iosxe:
  devices:
    - name: Device1
      configuration:
        community_lists:
          expanded:
            - name: CLE1
              entries:
                - action: permit
                  regex: "65000:500"
          standard:
            - name: CLS1
              entries:
                - action: deny
                  communities: ["65000:500"]
                - action: permit
                  communities: ["65000:501"]