其中FP = Format prefix(格式前缀),对于可聚集全局单播地址,其值为“001”TLA ID = Top-level Aggregation Identifier(顶级聚集标识符)RES = Reserved for future use(保留以备将来使用)NLA ID = Next-Level Aggregation Identifier(下一级聚集标识符)SLA ID = Site-Level Aggregation Identifier(站点级聚集标识符)Interface ID = Interface Identifier(接口标识符)