Internet Assigned Numbers Authority

                                                 Border Gateway Protocol (BGP) Well-known Communities

   Created
   2004-01-16

   Last Updated
   2023-08-15

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     • BGP Well-known Communities

BGP Well-known Communities

   Reference
   [RFC 1997][RFC 8642]

   Note

 Out of the total community space defined by RFC 1997 of 0x00000000 -
 0xFFFFFFFF, the following ranges and values are reserved for communities
 that have global significance and their operations shall be implemented in
 any community-attribute-aware BGP speaker. The remainder of the space,
 specifically 0x00010000 - 0xFFFEFFFF, is for Private Use, with the first two
 octets encoding the autonomous system value as described by the RFC.


   Available Formats
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           Range         Registration Procedures
   0x00000000-0x0000FFFF Reserved
   0x00010000-0xFFFEFFFF Private Use
   0xFFFF0000-0xFFFF8000 First Come First Served
   0xFFFF8001-0xFFFFFFFF Standards Action

      Attribute Value            Attribute                        Reference
   0x00000000-0x0000FFFF Reserved                   [RFC 1997]
   0x00010000-0xFFFEFFFF Reserved for Private Use   [RFC 1997]
        0xFFFF0000       GRACEFUL_SHUTDOWN          [RFC 8326]
        0xFFFF0001       ACCEPT_OWN                 [RFC 7611]
        0xFFFF0002       ROUTE_FILTER_TRANSLATED_v4 [draft-l3vpn-legacy-rtc]
        0xFFFF0003       ROUTE_FILTER_v4            [draft-l3vpn-legacy-rtc]
        0xFFFF0004       ROUTE_FILTER_TRANSLATED_v6 [draft-l3vpn-legacy-rtc]
        0xFFFF0005       ROUTE_FILTER_v6            [draft-l3vpn-legacy-rtc]
        0xFFFF0006       LLGR_STALE                 [RFC-ietf-idr-long-lived-gr-06]
        0xFFFF0007       NO_LLGR                    [RFC-ietf-idr-long-lived-gr-06]
        0xFFFF0008       accept-own-nexthop         [draft-agrewal-idr-accept-own-nexthop]
        0xFFFF0009       Standby PE                 [RFC 9026]
   0xFFFF000A-0xFFFF0299 Unassigned
        0xFFFF029A       BLACKHOLE                  [RFC 7999]
   0xFFFF029B-0xFFFFFF00 Unassigned
        0xFFFFFF01       NO_EXPORT                  [RFC 1997]
        0xFFFFFF02       NO_ADVERTISE               [RFC 1997]
        0xFFFFFF03       NO_EXPORT_SUBCONFED        [RFC 1997]
        0xFFFFFF04       NOPEER                     [RFC 3765]
   0xFFFFFF05-0xFFFFFFFF Unassigned

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