Manipulating The Community Attribute - Dell C9000 Series Networking Configuration Manual

4 Enter ROUTER BGP mode.
CONFIGURATION mode
router bgp as-number
AS-number: 0 to 65535 (2-Byte) or 1 to 4294967295 (4-Byte) or 0.1 to 65535.65535 (Dotted format)
5 Apply the route map to the neighbor or peer group's incoming or outgoing routes.
CONFIG-ROUTER-BGP mode
neighbor {ip-address | peer-group-name} route-map map-name {in | out}
To view the BGP configuration, use the show config command in CONFIGURATION ROUTER BGP mode.
To view a route map configuration, use the show route-map command in EXEC Privilege mode.
To view which BGP routes meet an IP community or IP extended community list's criteria, use the show ip
bgp {community-list | extcommunity-list} command in EXEC Privilege mode.

Manipulating the COMMUNITY Attribute

In addition to permitting or denying routes based on the values of the COMMUNITY attributes, you can
manipulate the COMMUNITY attribute value and send the COMMUNITY attribute with the route information.
By default, the system does not send the COMMUNITY attribute.
To send the COMMUNITY attribute to BGP neighbors, use the following command.
• Enable the software to send the router's COMMUNITY attribute to the BGP neighbor or peer group
specified.
CONFIG-ROUTER-BGP mode
neighbor {ip-address | peer-group-name} send-community
To view the BGP configuration, use the show config command in CONFIGURATION ROUTER BGP mode.
If you want to remove or add a specific COMMUNITY number from a BGP path, you must create a route map
with one or both of the following statements in the route map. Then apply that route map to a BGP neighbor
or peer group.
1 Enter ROUTE-MAP mode and assign a name to a route map.
CONFIGURATION mode
route-map map-name [permit | deny] [sequence-number]
2 Configure a set filter to delete all COMMUNITY numbers in the IP community list.
CONFIG-ROUTE-MAP mode
set comm-list community-list-name delete
OR
set community {community-number | local-as | no-advertise | no-export | none}
Configure a community list by denying or permitting specific community numbers or types of
community.
Border Gateway Protocol IPv4 (BGPv4) 231