Pradosh Mohapatra, Eric C. Rosen. The BGP Encapsulation Subsequent Address Family Identifier (SAFI) and the BGP Tunnel Encapsulation Attribute. RFC, 5512:1-13, April 2009. [doi]
@article{rfc5512, title = {The BGP Encapsulation Subsequent Address Family Identifier (SAFI) and the BGP Tunnel Encapsulation Attribute}, author = {Pradosh Mohapatra and Eric C. Rosen}, year = {2009}, month = {April}, doi = {10.17487/RFC5512}, url = {https://doi.org/10.17487/RFC5512}, researchr = {https://researchr.org/publication/rfc5512}, cites = {0}, citedby = {0}, journal = {RFC}, volume = {5512}, pages = {1-13}, }