OID & ORS
Object Identifiers (OID)
RFC 3061
0 - ITU-T assigned 1 - ISO assigned 2 - Joint ISO/ITU-T assignment
层次化标识,支持各国家分区管理
Human-readable notation: {joint-iso-itu-t(2) alerting(49) wmo(0) authority(0)} Dot notation: 2.49.0.0
OID Resolution System (ORS)
Information technology – Open systems interconnection – Object identifier resolution system
各层次的ORS其实就是zone files里配置了ORS域的DNS各级权威,向ORS client最终返回NAPTR记录以标识获取信息的URL
各级ORS配置DNAME,以同时支持数字/字符串格式的域名,例如 joint-iso-itu-t.oid-res.org. IN DNAME 2.oid-res.org