Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 233
Manipulate the COMMUNITY attribute
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Use these commands in the following sequence, starting in the CONFIGURATION mode, To use an IP Community list or Extended Community List to filter routes, you must apply a match community filter to a route map and then apply that route map to a BGP neighbor or peer group. Step Command Syntax Command Mode 1 route-map map-name [permit | CONFIGURATION deny] [sequence-number] 2 match {community CONFIG-ROUTE-MAP community-list-name [exact] | extcommunity extcommunity-list-name [exact]} 3 exit CONFIG-ROUTE-MAP 4 router bgp as-number CONFIGURATION 5 neighbor {ip-address | CONFIG-ROUTER-BGP peer-group-name} route-map map-name {in | out} Purpose Enter the ROUTE-MAP mode and assign a name to a route map. Configure a match filter for all routes meeting the criteria in the IP Community or Extended Community list. Return to the CONFIGURATION mode. Enter the ROUTER BGP mode. AS-number: 0-65535 (2-Byte) or 1-4294967295 (4-Byte) or 0.1-65535.65535 (Dotted format) Apply the route map to the neighbor or peer group's incoming or outgoing routes. 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 Extended Community list's criteria, use the show ip bgp {community-list | extcommunity-list} command in EXEC Privilege mode. Manipulate 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, FTOS does not send the COMMUNITY attribute. Use the following command in the CONFIGURATION ROUTER BGP mode to send the COMMUNITY attribute to BGP neighbors. Command Syntax neighbor {ip-address | peer-group-name} send-community Command Mode CONFIG-ROUTER-BGP Purpose Enable the software to send the router's COMMUNITY attribute to the BGP neighbor or peer group specified. To view the BGP configuration, use the show config command in the CONFIGURATION ROUTER BGP mode. Border Gateway Protocol IPv4 (BGPv4) | 233
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