7.1. Normative References (规范性参考文献)

7.1. Normative References (规范性参考文献)

[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels" (RFC 中用于指示要求级别的关键词), BCP 14, RFC 2119, DOI 10.17487/RFC2119, 1997年3月, http://www.rfc-editor.org/info/rfc2119.

[RFC3629] Yergeau, F., "UTF-8, a transformation format of ISO 10646" (UTF-8, ISO 10646 的一种转换格式), STD 63, RFC 3629, DOI 10.17487/RFC3629, 2003年11月, http://www.rfc-editor.org/info/rfc3629.

[RFC4271] Rekhter, Y., Ed., Li, T., Ed., and S. Hares, Ed., "A Border Gateway Protocol 4 (BGP-4)" (边界网关协议 4), RFC 4271, DOI 10.17487/RFC4271, 2006年1月, http://www.rfc-editor.org/info/rfc4271.

[RFC4486] Chen, E. and V. Gillet, "Subcodes for BGP Cease Notification Message" (BGP Cease 通知消息的子代码), RFC 4486, DOI 10.17487/RFC4486, 2006年4月, http://www.rfc-editor.org/info/rfc4486.

[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words" (RFC 2119 关键词中大写与小写的歧义), BCP 14, RFC 8174, DOI 10.17487/RFC8174, 2017年5月, http://www.rfc-editor.org/info/rfc8174.