What are the ethernet frame fields, Computer Networking

Ethernet Frame Fields

Preamble - seven bytes of alternating 0s also 1s to notify receiver of incoming frame and to provide synchronization
SFD (Start frame delimiter) - one byte signalling the beginning of the frame
DA (Destination address) - six bytes containing the physical address of the next destination if packet must reach another LAN this field contains the physical address of the router upon reaching the target network field then contains the physical address of the destination device
SA (Source address) - six byte field containing physical address of last station to forward packet sending station or most recent router

Length or type - Two bytes indicating number of bytes in coming PDU if fixed length can indicate type
Data - 46 to 1500 bytes
CRC - CRC-32 error detection information

Related Discussions:- What are the ethernet frame fields

Internet address, Addresses are necessary for virtually everything we do on...

Addresses are necessary for virtually everything we do on the Internet. In TCP/IP the IP is a mechanism for providing addresses for computers on the Internet. Internet addresses ha

Diffuse reflection in the basic illumination model, Question: (a) By ma...

Question: (a) By making use of an example, explain the Cohen-Sutherland line clipping algorithm. (b) Compare and contrast between the CMY and RGB colour models. (c) Expla

Networking project for 20 computers, can i get a sample networking project ...

can i get a sample networking project for 20 computer with all network components?

Reliable data transfer over a channel bit error rdt : 20, Reliable data...

Reliable data transfer over a channel bit error rdt : 20 A more realist model of the underlying channel is one in which bits in packet may be computed. Such bit erro

Which layer defines the physical topology, The Physical layer deals with th...

The Physical layer deals with the definite physical medium and the method of transporting 1s and 0s.

Explain the lan topologies, LAN Topologies The term topology explains t...

LAN Topologies The term topology explains the geographic arrangement of networking devices. It explains the actual layout of the network hardware. Given the location of worksta

Different types of subnet classfull networks are present, How many dissimil...

How many dissimilar types of subnet classful networks are present?

What advantages does fiber optics have over other media, What advantages do...

What advantages does fiber optics have over other media? One main advantage of fiber optics is that is it less susceptible to electrical interference. It also supports higher ba

Illustrate the working of networking bus topology, Illustrate the working o...

Illustrate the working of networking Bus Topology All stations attach, by appropriate hardware interfacing called as a tap, directly to a linear transmission medium, or bus. F

Simplicity - transport layer, Simplicity The advantage of this approa...

Simplicity The advantage of this approach is the simplicity of receiver buffering. The receiver need not buffer out of order packets the sender must maintain the upper an

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages