RBNF

There is another page with same name:

R-BNF

RBNF

[1] Routing Backus-Naur Form (RBNF): A Syntax Used to Form Encoding Rules in Various Routing Protocol Specifications <http://www.rfc-editor.org/rfc/rfc5511.txt>

[2] RFC 5511 - Routing Backus-Naur Form (RBNF): A Syntax Used to Form Encoding Rules in Various Routing Protocol Specifications (2009-11-20 23:19:00 +09:00 版) <http://tools.ietf.org/html/rfc5511>

関連

[3] R-BNF と名前は似ていますが別物です。