d 55.0.0.0/24 172.16.0.2 00:36:23 200Dell#BGP Extended Communities (RFC 4360)BGP Extended Communities, as defined in RFC 4360, is an optional transitive BGP attribute.BGP Extended Communities provides two major advantages over Standard Communities:• The range is extended from 4-octet (AA:NN) to 8-octet (Type:Value) to provide enough numbercommunities.• Communities are structured using a new “Type” field (1 or 2-octets), allowing you to provide granularcontrol/filter routing information based on the type of extended communities.set extcommunity rtTo set Route Origin community attributes in Route Map, use this feature.S4810Syntax set extcommunity rt {as4 ASN4:NN [non-trans] | ASN:NNNN [non-trans] | IPADDR:NN [non-trans]} [additive]To delete the Route Origin community, use the no set extcommunitycommand.Parameters as4 ASN4:NN Enter the keyword as4 then the 4-octet AS specificextended community number in the format ASN4:NN (4-byte AS number:2-byte community value).ASN:NNNN Enter the 2-octet AS specific extended community numberin the format ASN:NNNN (2-byte AS number:4-bytecommunity value).IPADDR:NN Enter the IP address specific extended community in theformat IPADDR:NN (4-byte IPv4 Unicast Address:2-bytecommunity value).additive (OPTIONAL) Enter the keyword additive to add to theexisting extended community.non-trans (OPTIONAL) Enter the keywords non-trans to indicate anon-transitive BGP extended community.Defaults noneCommandModesROUTE MAP (config-route-map)CommandHistoryThis guide is platform-specific. For command information about other platforms,refer to the relevant Dell Networking OS Command Line Reference Guide.Border Gateway Protocol 487
