Sorry, there is a mistake: (2) When the first bit of Node-Number is 0, 33(Node-Number) + 8(V) + 46(Registrar-ID) = 41 + 46 = 87
发件人: Anima [mailto:[email protected]] 代表 zhangyongkang 00210452 发送时间: 2017年11月20日 15:09 收件人: [email protected]; [email protected] 抄送: Zengweizhi; Yangang 主题: [Anima] A question about draft-ietf-anima-autonomic-control-plane-12 Hi Behringer, When I read the section 6.10.5 ACP Vlong Addressing Sub-Scheme，I was confused about the following content: 50 78 +---------------------++-----------------------------+----------+ | (base scheme) || Node-ID | | || Registrar-ID | Node-Number| V | +---------------------++--------------+--------------+----------+ 46 33/17 8/16 Figure 6: ACP Vlong Addressing Sub-Scheme … o Registrar-ID: To maximize Node-Number and V, the Registrar-ID is reduced to 46 bits. This still allows to use the MAC address of a registrar by removing the V and U bits from the 48 bits of a MAC address (those two bits are never unique, so they cannot be used to distinguish MAC addresses). o If the first bit of the "Node-Number" is "1", then the Node-Number is 17 bit long and the V field is 16 bit long. Otherwise the Node-Number is 33 bit long and the V field is 8 bit long. "0" bit Node-Numbers are intended to be used for "general purpose" ACP nodes that would potentially have a limited number (< 256) of clients (ASA/Autonomic Functions or legacy services) nof the ACP that require separate V(irtual) addresses. "1" bit Node-Numbers are intended for ACP nodes that are ACP edge nodes (see Section 8.1.1) or that have a large number of clients requiring separate V(irtual) addresses. For example large SDN controllers with container modular software architecture (see Section 8.1.2). According the above content, Node-ID(78bits) is composed of Registrar-ID, Node-Number and V fields. But: (1) When the first bit of Node-Number is 1, 17(Node-Number) + 16(V) + 46(Registrar-ID) = 33 + 46 = 79 (2) When the first bit of Node-Number is 0, 33(Node-Number) + 8(V) + 46(Registrar-ID) = 41 + 46 = 97 So the result confused me! Please check the above section again when you pleasure.
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