Sub-Type Value,Name,Reference,Date
0x00-0x03,Unassigned,,
0x04,SecurityGroupAS4,[Anantharamu_Suryanarayana][https://github.com/Juniper/contrail-controller/wiki/BGP-Extended-Communities#security-group],2018-10-01
0x05-0x07,Unassigned,,
0x08,Flow spec rt-redirect AS-4octet format,[RFC8955],2015-08-28
0x09-0x83,Unassigned,,
0x84,Tag4,[Anantharamu_Suryanarayana][https://github.com/Juniper/contrail-controller/wiki/BGP-Extended-Communities#tag],2018-10-01
0x85,Origin Sub-Cluster4,[Richard_Roberts][https://github.com/robric/wiki-contrail-controller/blob/master/BGP-Extended-Communities.md],2019-09-03
0x86-0xff,Unassigned,,