Internet Assigned Numbers Authority Border Gateway Protocol (BGP) Tunnel Encapsulation Last Updated 2024-01-12 Available Formats [IMG] XML [IMG] HTML [IMG] Plain text Registries included below • BGP Tunnel Encapsulation Attribute Tunnel Types • BGP Tunnel Encapsulation Attribute Sub-TLVs • Flags Field of VXLAN Encapsulation Sub-TLVs • Flags Field of NVGRE Encapsulation Sub-TLVs • Embedded Label Handling Sub-TLVs • Color Extended Community Flags BGP Tunnel Encapsulation Attribute Tunnel Types Registration Procedure(s) First Come First Served Reference [RFC9012] Available Formats [IMG] CSV Value Description Reference 0 Reserved [RFC9012] 1 L2TPv3 over IP [RFC9012] 2 GRE [RFC9012] 3 Transmit tunnel endpoint (DEPRECATED) [RFC9012] 4 IPsec in Tunnel-mode (DEPRECATED) [RFC9012] 5 IP in IP tunnel with IPsec Transport Mode (DEPRECATED) [RFC9012] 6 MPLS-in-IP tunnel with IPsec Transport Mode (DEPRECATED) [RFC9012] 7 IP in IP [RFC9012] 8 VXLAN Encapsulation [RFC8365] 9 NVGRE Encapsulation [RFC8365] 10 MPLS Encapsulation [RFC8365] 11 MPLS in GRE Encapsulation [RFC8365] 12 VXLAN GPE Encapsulation [RFC8365] 13 MPLS in UDP Encapsulation [RFC7510][RFC Errata 4350] 14 IPv6 Tunnel [Martin_Djernaes] 15 SR TE Policy Type [draft-ietf-idr-segment-routing-te-policy] 16 Bare [Nischal_Sheth] 17 SR Tunnel (DEPRECATED) [RFC9125] 18 Cloud Security [Ramesh_Babu_Yakkala] 19 Geneve Encapsulation [RFC8926] 20 Any-Encapsulation [draft-ietf-bess-bgp-multicast-controller-06] 21 GTP Tunnel Type [Keyur_Patel][Tetsuya_Murakami] 22 Dynamic Path Selection (DPS) Tunnel Encapsulation [Venkit_Kasiviswanathan] 23 Originating PE (OPE) [draft-heitz-bess-evpn-option-b-01] 24 Dynamic Path Selection (DPS) Policy [https://eos.arista.com/eos-4-26-2f/dps-vpn-scaling-using-bgp][Sarah_Chen] 25 SDWAN-Hybrid [draft-ietf-idr-sdwan-edge-discovery-04] 26 X-over-UDP [Jeffrey_Haas] 27-65535 Unassigned BGP Tunnel Encapsulation Attribute Sub-TLVs Reference [RFC9012] Note If the Sub-TLV Type is in the range from 0 to 127 (inclusive), the Sub-TLV Length field contains one octet. If the Sub-TLV Type is in the range from 128 to 255 (inclusive), the Sub-TLV Length field contains two octets. Available Formats [IMG] CSV Range Registration Procedures 1-63 Standards Action 64-125 First Come First Served 126-127 Experimental Use 128-191 Standards Action 192-252 First Come First Served 253-254 Experimental Use Value Description Reference 0 Reserved [RFC9012] 1 Encapsulation [RFC9012] 2 Protocol Type [RFC9012] 3 IPsec Tunnel Authenticator (DEPRECATED) [RFC9012] 4 Color [RFC9012] 5 Load-Balancing Block [RFC5640] 6 Tunnel Egress Endpoint [RFC9012] 7 DS Field [RFC9012] 8 UDP Destination Port [RFC9012] 9 Embedded Label Handling [RFC9012] 10 MPLS Label Stack [RFC9012] 11 Prefix-SID [RFC9012] 12 Preference sub-TLV (TEMPORARY - registered 2017-10-12, extension registered [draft-ietf-idr-segment-routing-te-policy] 2023-07-10, expires 2024-10-12) 13 Binding SID sub-TLV (TEMPORARY - registered 2017-10-12, extension registered [draft-ietf-idr-segment-routing-te-policy] 2023-07-10, expires 2024-10-12) 14 ENLP sub-TLV (TEMPORARY - registered 2019-08-29, extension registered 2023-07-10, [draft-ietf-idr-segment-routing-te-policy-18] expires 2024-08-29) 15 Priority sub-TLV (TEMPORARY - registered 2019-08-29, extension registered [draft-ietf-idr-segment-routing-te-policy-18] 2023-07-10, expires 2024-08-29) 16 SPI/SI Representation Sub-TLV [RFC9015] 17-19 Unassigned 20 SRv6 Binding SID sub-TLV (TEMPORARY - registered 2021-05-25, extension registered [draft-ietf-idr-segment-routing-te-policy-20] 2023-05-25, expires 2024-05-25) 21-63 Unassigned 64 IPSEC-SA-ID [draft-ietf-idr-sdwan-edge-discovery-04, Section 6.3] 65 Extended Port Property [draft-ietf-idr-sdwan-edge-discovery-04, Section 6.4] 66 Underlay ISP Properties [draft-ietf-idr-sdwan-edge-discovery-04, Section 6.5] 67 IPsec SA Nonce [draft-ietf-idr-sdwan-edge-discovery-04, Section 7.1] 68 IPsec Public Key [draft-ietf-idr-sdwan-edge-discovery-04, Section 7.2] 69 IPsec SA Proposal [draft-ietf-idr-sdwan-edge-discovery-04, Section 7.3] 70 Simplified IPsec SA [draft-ietf-idr-sdwan-edge-discovery-04, Section 7.4] 71-122 Unassigned 123 NRP [draft-ietf-idr-sr-policy-nrp-00] 124 RPF [draft-ietf-bess-bgp-multicast-controller-06] 125 Tree Label Stack [draft-ietf-bess-bgp-multicast-controller-06] 126-127 Reserved for Experimental Use [RFC9012] 128 Segment List sub-TLV (TEMPORARY - registered 2017-10-12, extension registered [draft-ietf-idr-segment-routing-te-policy] 2023-07-10, expires 2024-10-12) 129 Policy CP Name sub-TLV (TEMPORARY - registered 2019-08-29, extension registered [draft-ietf-idr-segment-routing-te-policy-18] 2023-07-10, expires 2024-08-29) 130 Policy Name sub-TLV (TEMPORARY - registered 2021-05-25, extension registered [draft-ietf-idr-segment-routing-te-policy-20] 2023-05-25, expires 2024-05-25) 131-191 Unassigned 192 The WAN ID Sub-TLV [Venkit_Kasiviswanathan] 193 The Bytes Sub-TLV [Venkit_Kasiviswanathan] 194 IPSEC DIM sub-TLV [Venkit_Kasiviswanathan] 195 IPSEC Key Exchange sub-TLV [Venkit_Kasiviswanathan] 196 IPSEC SA Proposals sub-TLV [Venkit_Kasiviswanathan] 197 Service Segment List [Hongda_Huang] 198 Service Vtep [Hongda_Huang] 199-252 Unassigned 253-254 Reserved for Experimental Use [RFC9012] 255 Reserved [RFC9012] Flags Field of VXLAN Encapsulation Sub-TLVs Registration Procedure(s) Standards Action Reference [RFC9012] Available Formats [IMG] CSV Bit Position Description Reference 0 V (VN-ID) [RFC9012] 1 M (MAC Address) [RFC9012] 2-7 Unassigned Flags Field of NVGRE Encapsulation Sub-TLVs Registration Procedure(s) Standards Action Reference [RFC9012] Available Formats [IMG] CSV Bit Position Description Reference 0 V (VN-ID) [RFC9012] 1 M (MAC Address) [RFC9012] 2-7 Unassigned Embedded Label Handling Sub-TLVs Registration Procedure(s) Standards Action Reference [RFC9012] Available Formats [IMG] CSV Value Description Reference 0 Reserved [RFC9012] 1 Payload of MPLS with embedded label [RFC9012] 2 No embedded label in payload [RFC9012] 3-255 Unassigned Color Extended Community Flags Registration Procedure(s) Standards Action Reference [RFC9012] Available Formats [IMG] CSV Bit Position Description Reference 0-1 Color-only bits (TEMPORARY - registered 2021-05-25, extension registered 2023-05-25, [draft-ietf-idr-segment-routing-te-policy-20] expires 2024-05-25) 2-15 Unassigned Contact Information ID Name Contact URI Last Updated [Hongda_Huang] Hongda Huang mailto:hongda&arista.com 2023-07-19 [Jeffrey_Haas] Jeffrey Haas mailto:jhaas&juniper.net 2023-03-22 [Keyur_Patel] Keyur Patel mailto:keyur&arrcus.com 2021-05-14 [Martin_Djernaes] Martin Djernaes mailto:mdjernaes&juniper.net 2016-03-30 [Nischal_Sheth] Nischal Sheth mailto:nsheth&juniper.net 2017-08-16 [Ramesh_Babu_Yakkala] Ramesh Babu Yakkala mailto:ryakkala&cisco.com 2020-02-18 [Sarah_Chen] Sarah Chen mailto:sarahchen&arista.com 2022-02-01 [Tetsuya_Murakami] Tetsuya Murakami mailto:tetsuya&arrcus.com 2021-05-14 [Venkit_Kasiviswanathan] Venkit Kasiviswanathan mailto:venkit&arista.com 2021-09-10 Licensing Terms