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【转】ethernet 取值

EtherType 是以太帧里的一个字段,用来指明应用于帧数据字段的协议。根据 IEEE802.3,Length/EtherType 字段是两个八字节的字段,含义两者取一,这取决于其数值。在量化评估中,字段中的第一个八位字节是最重要的。而当字段值大于等于十进制值 1536 (即十六进制为 0600)时, EtherType 字段表示为 MAC 客户机协议(EtherType 解释)的种类。该字段的长度和 EtherType 详解是互斥的。

该类字段值取自 IEEE EtherType 字段寄存器。EtherType 字段是个极限空间,因此其分配是有限的。只有开发新的数据传输协议的人员需要使用 EtherType 字段,而不管他们实际上是否真正生产任何设备。IEEE RAC EtherType 字段批准权威机构负责检查和批准 EtherType 字段。

知名协议已经分配了 EtherType 值,下面表格中列出了 EtherType 字段中常用值及其对应的协议:

Ethertype(十六进制) 协议
0x0000 - 0x05DC IEEE 802.3 长度
0x0101 � 0x01FF 实验
0x0600 XEROX NS IDP
0x0660 0x0661 DLOG
0x0800 网际协议(IP)
0x0801 X.75 Internet
0x0802 NBS Internet
0x0803 ECMA Internet
0x0804 Chaosnet
0x0805 X.25 Level 3
0x0806 地址解析协议(ARP : Address Resolution Protocol)
0x0808 帧中继 ARP (Frame Relay ARP) [RFC1701]
0x6559 原始帧中继(Raw Frame Relay) [RFC1701]
0x8035 动态 DARP(DRARP:Dynamic RARP)
反向地址解析协议(RARP:Reverse Address Resolution Protocol)
0x8037 Novell Netware IPX
0x809B EtherTalk
0x80D5 IBM SNA Services over Ethernet
0x 80F 3 AppleTalk 地址解析协议(AARP:AppleTalk Address Resolution Protocol)
0x8100 以太网自动保护开关(EAPS:Ethernet Automatic Protection Switching)
0x8137 因特网包交换(IPX:Internet Packet Exchange)
0x 814C 简单网络管理协议(SNMP:Simple Network Management Protocol)
0x86DD 网际协议v6 (IPv6,Internet Protocol version 6)
0x880B 点对点协议(PPP:Point-to-Point Protocol)
0x 880C 通用交换管理协议(GSMP:General Switch Management Protocol)
0x8847 多协议标签交换(单播) MPLS:Multi-Protocol Label Switching <unicast>)
0x8848 多协议标签交换(组播)(MPLS, Multi-Protocol Label Switching <multicast>)
0x8863 以太网上的 PPP(发现阶段)(PPPoE:PPP Over Ethernet <Discovery Stage>)
0x8864 以太网上的 PPP(PPP 会话阶段) (PPPoE,PPP Over Ethernet<PPP Session Stage>)
0x88BB 轻量级访问点协议(LWAPP:Light Weight Access Point Protocol)
0x88CC 链接层发现协议(LLDP:Link Layer Discovery Protocol)
0x8E88 局域网上的 EAP(EAPOL:EAP over LAN)
0x9000 配置测试协议(Loopback)
0x9100 VLAN 标签协议标识符(VLAN Tag Protocol Identifier)
0x9200 VLAN 标签协议标识符(VLAN Tag Protocol Identifier)
0xFFFF 保留

EtherType:以太网类型字段及值

EtherType:以太网类型字段及值

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