Chapter 2 Advanced Routing for FortiOS 5.0 : Border Gateway Protocol (BGP) : BGP background and concepts : Parts and terminology of BGP : BGP and IPv6
  
BGP and IPv6
FortiGate units support IPv6 over BGP using the same config router bgp command as IPv4, but different subcommands.
The main CLI keywords have IPv6 equivalents that are identified by the “6” on the end of the keyword, such as with config network6 or set allowas-in6. For more information about IPv6 BGP keywords, see the FortiGate CLI Reference.
IPv6 BGP commands include:
config router bgp
set activate6 {enable | disable}
set allowas-in6 <max_num_AS_integer>
set allowas‑in‑enable6 {enable | disable}
set as-override6 {enable | disable}
set attribute-unchanged6 [as-path] [med] [next-hop]
set capability-default-originate6 {enable | disable}
set capability‑graceful‑restart6 {enable | disable}
set capability-orf6 {both | none | receive | send}
set default-originate-route-map6 <routemap_str>
set distribute‑list‑in6 <access-list-name_str>
set distribute-list-out6 <access-list-name_str>
set filter-list-in6 <aspath-list-name_str>
set filter‑list‑out6 <aspath-list-name_str>
set maximum-prefix6 <prefix_integer>
set maximum-prefix-threshold6 <percentage_integer>
set maximum-prefix-warning-only6 {enable | disable}
set next-hop-self6 {enable | disable}
set prefix-list-in6 <prefix-list-name_str>
set prefix-list-out6 <prefix-list-name_str>
set remove-private-as6 {enable | disable}
set route-map-in6 <routemap-name_str>
set route‑map‑out6 <routemap-name_str>
set route-reflector-client6 {enable | disable}
set route-server-client6 {enable | disable}
set send-community6 {both | disable | extended | standard}
set soft-reconfiguration6 {enable | disable}
set unsuppress-map6 <route-map-name_str>
config network6
config redistribute6
end