Ethertype: Ethernet Type field and Value

Ethertype is a field in an ethereframe. It is used to specify the Protocol applied to the frame data field. According to 802.3, the length/ethertype field is a field of two eight character segments. The meaning of the two is one, depending on the value. In quantitative evaluation, the first eight-byte field is the most important. When the field value is greater than or equal to the decimal value 1536 (that is, the hexadecimal value is 0600), The ethertype field represents the type of the Mac client protocol (ethertype interpretation. The length of this field is mutually exclusive with the ethertype.

This field value is taken from the IEEE ethertype field register. The ethertype field is a limit space, so its allocation is limited. Only those who develop new data transmission protocols need to use the ethertype field, regardless of whether they actually produce any device. The authority for the authorization of the ieee rac ethertype field is responsible for checking and approving the ethertype field.

The ethertype value has been assigned to the well-known protocol. The following table lists the common values in the ethertype field and their corresponding protocols:

Ethertype (hexadecimal)	Protocol
0x0000-0x05dc	IEEE 802.3 Length
0x0101-0x01ff	Lab
Zero X 0600	Xerox NS IDP
0x0660 0x0661	Dlog
Zero X 0800	Internet Protocol (IP)
Zero X 0801	X.75 Internet
Zero X 0802	NBS Internet
Zero X 0803	ECMA Internet
Zero X 0804	Chaosnet
Zero X 0805	X.25 level 3
Zero X 0806	Address Resolution Protocol (ARP: Address Resolution Protocol)
Zero X 0808	Frame Relay ARP [rfc1701]
Zero X 6559	Raw frame relay [rfc1701]
Zero X 8035	Dynamic darp (drarp: Dynamic RARP) Reverse Address Resolution Protocol (RARP: Reverse Address Resolution Protocol)
Zero X 8037	Novell Netware IPX
0x809b	Ethertalk
0x80d5	Ibm sna services over Ethernet
0x 80f 3	Appletalk address parsing protocol (AARP: appletalk Address Resolution Protocol)
Zero X 8100	Ethernet automatic protection switch (EAPS: Ethernet Automatic Protection Switching)
Zero X 8137	Internet Packet Exchange (IPX: Internet Packet Exchange)
0x 814c	Simple Network Management Protocol (SNMP: Simple Network Management Protocol)
0x86dd	Internet Protocol V6 (IPv6, Internet Protocol version 6)
0x880b	Point-to-Point Protocol (PPP: Point-to-Point Protocol)
0x 880c	Gsmp: General switch Management Protocol)
Zero X 8847	Multi-Protocol Label Switching (unicast) MPLS: Multi-Protocol Label Switching <unicast>)
Zero X 8848	Multi-Protocol Label Switching (Multicast) (MPLS, Multi-Protocol Label Switching <multicast>)
Zero X 8863	PPP over Ethernet (discovery stage) (pppoe: PPP over Ethernet <discovery stage>)
Zero X 8864	PPP over Ethernet (PPP session stage) (pppoe, PPP over Ethernet <PPP session stage>)
0x88bb	Lightweight Access Point Protocol (lwapp: Light Weight Access Point Protocol)
0x88cc	Link Layer Discovery Protocol (lldp: Link Layer Discovery Protocol)
0x8e88	EAP (eapol: EAP over LAN) on the LAN)
Zero x 9000	Configure the test protocol (loopback)
Zero X 9100	VLAN tag protocol identifier (VLAN tag protocol identifier)
Zero X 9200	VLAN tag protocol identifier (VLAN tag protocol identifier)
0 xFFFF	Retained

Ethertype: Ethernet Type field and Value

Related Terms: Ethernet, Ethernet frame, ethertype, Ethernet type, and Ethernet types)