10. IANA Considerations (IANA 考虑事项)
10. IANA Considerations (IANA 考虑事项)
10.1. Ethernet Next Header Type (以太网下一头部类型)
IANA 已在 "Assigned Internet Protocol Numbers (已分配的互联网协议号)" 注册表 (见 https://www.iana.org/assignments/protocol-numbers/) 中分配了 "Ethernet" (值 143)。IPv6 头部或任何扩展头部的 Next Header (下一头部) 字段中的值 143 表示有效载荷是一个以太网帧 [IEEE.802.3_2018]。
10.2. SRv6 Endpoint Behaviors Registry (SRv6 端点行为注册表)
IANA 已创建了一个名为 "Segment Routing (段路由)" 的新顶级注册表 (见 https://www.iana.org/assignments/segment-routing/)。此注册表作为所有 Segment Routing 子注册表的顶级注册表。
此外, IANA 已在顶级 "Segment Routing" 注册表下创建了一个名为 "SRv6 Endpoint Behaviors (SRv6 端点行为)" 的新子注册表。此子注册表维护 SRv6 端点行为的 16 位标识符。建立此注册表是为了为需要引用这些行为的控制平面协议提供一致性。这些值不在 SID 内的功能位中编码。
10.2.1. Registration Procedures (注册程序)
注册表的范围是 0-65535 (0x0000-0xFFFF)。下表包含每个范围的分配范围和注册策略 [RFC8126]:
| Range | Range (Hex) | Registration Procedures | Note |
|---|---|---|---|
| 0 | 0x0000 | Reserved | Not to be allocated |
| 1-32767 | 0x0001-0x7FFF | First Come First Served | |
| 32768-34815 | 0x8000-0x87FF | Private Use | |
| 34816-65534 | 0x8800-0xFFFE | Reserved | |
| 65535 | 0xFFFF | Reserved | Opaque |
表 5: 注册程序
10.2.2. Initial Registrations (初始注册)
子注册表的初始注册如下:
| Value | Hex | Endpoint Behavior | Reference |
|---|---|---|---|
| 0 | 0x0000 | Reserved | |
| 1 | 0x0001 | End | RFC 8986 |
| 2 | 0x0002 | End with PSP | RFC 8986 |
| 3 | 0x0003 | End with USP | RFC 8986 |
| 4 | 0x0004 | End with PSP & USP | RFC 8986 |
| 5 | 0x0005 | End.X | RFC 8986 |
| 6 | 0x0006 | End.X with PSP | RFC 8986 |
| 7 | 0x0007 | End.X with USP | RFC 8986 |
| 8 | 0x0008 | End.X with PSP & USP | RFC 8986 |
| 9 | 0x0009 | End.T | RFC 8986 |
| 10 | 0x000A | End.T with PSP | RFC 8986 |
| 11 | 0x000B | End.T with USP | RFC 8986 |
| 12 | 0x000C | End.T with PSP & USP | RFC 8986 |
| 13 | 0x000D | Unassigned | |
| 14 | 0x000E | End.B6.Encaps | RFC 8986 |
| 15 | 0x000F | End.BM | RFC 8986 |
| 16 | 0x0010 | End.DX6 | RFC 8986 |
| 17 | 0x0011 | End.DX4 | RFC 8986 |
| 18 | 0x0012 | End.DT6 | RFC 8986 |
| 19 | 0x0013 | End.DT4 | RFC 8986 |
| 20 | 0x0014 | End.DT46 | RFC 8986 |
| 21 | 0x0015 | End.DX2 | RFC 8986 |
| 22 | 0x0016 | End.DX2V | RFC 8986 |
| 23 | 0x0017 | End.DT2U | RFC 8986 |
| 24 | 0x0018 | End.DT2M | RFC 8986 |
| 25 | 0x0019 | Reserved | RFC 8986 |
| 26 | 0x001A | Unassigned | |
| 27 | 0x001B | End.B6.Encaps.Red | RFC 8986 |
| 28 | 0x001C | End with USD | RFC 8986 |
| 29 | 0x001D | End with PSP & USD | RFC 8986 |
| 30 | 0x001E | End with USP & USD | RFC 8986 |
| 31 | 0x001F | End with PSP, USP & USD | RFC 8986 |
| 32 | 0x0020 | End.X with USD | RFC 8986 |
| 33 | 0x0021 | End.X with PSP & USD | RFC 8986 |
| 34 | 0x0022 | End.X with USP & USD | RFC 8986 |
| 35 | 0x0023 | End.X with PSP, USP & USD | RFC 8986 |
| 36 | 0x0024 | End.T with USD | RFC 8986 |
| 37 | 0x0025 | End.T with PSP & USD | RFC 8986 |
| 38 | 0x0026 | End.T with USP & USD | RFC 8986 |
| 39 | 0x0027 | End.T with PSP, USP & USD | RFC 8986 |
| 40-32766 | 0x0028-0x7FFE | Unassigned | |
| 32767 | 0x7FFF | The SID defined in RFC 8754 | RFC 8986, RFC 8754 |
| 32768-34815 | 0x8000-0x87FF | Reserved for Private Use | RFC 8986 |
| 34816-65534 | 0x8800-0xFFFE | Reserved | RFC 8986 |
| 65535 | 0xFFFF | Opaque | RFC 8986 |
表 6: 初始注册