Today We Will Discuss Topic Is An Ethernet Frame Format Before We Dive Into Some Details Ethernet Frame Format In General In The Networking Field In Simple Language Our Frame Is A Data Packet Or Data Unit
Technically A Frame Is A Protocol Data Unit Or PDU At The Data Link Layer Of The OSI Model
The PDU Added A Different Layer Of The OSI Model Is Named Differently
At The Transport Layer For Example The PDU Is Called TCP Segment Or UDP Datagram Most Applications Use TCP And
At Network Layer The PDU Is Called A Packet Or An IP Packet
At The Data Link Layer The PDU Is Called A Frame
Different Tcp/Ip Technologies Use The Different Frames In Terms Of Header Information And A Maximum Transmission Unit Of The Data Or The Payload Capability
A Token Ring Frame Is A Different From The Ethernet Frame
A Wi-Fi Frame Is Different From A Wimax Frame
A SONET Frame Is A Different From ATM Frame And
Even Among The Ethernet Family Frames Can Be Different
For Example Some Implementations Of A Gigabit Ethernet
And A High-Speed With Ethernet Use Larger Frames Called Jumbo Frames
For Any Two Devices To Communicate They Must Use The Same Type Of Frames
Now Let’s Talk About The Ethernet Frame Format And Is Basic
An Ethernet A-Frame Have Was Seven Main Parts
- Preamble
- Receiving The MAC Address & Send A MAC Address
- Type
- Data
- Pad
- And FCS
Preamble Is A 64 Bit Of A Header Information Telling The Receiving Node That A Frame Is Coming And Where The Frame Starts
The Second Part of Ethernet Frame Format is A Recipient Destination MAC Address Followed By Sender’s Source MAC Address
The Third Part of Ethernet Frame Format is The Type Of Field That Tells The Recipient The Basic Type Of Data Such As IP Version 4 Or IP Version 6
The Forth Part of Ethernet Frame Format is The Data Field Is The Payload Carried By The Frame The Payload Of The Ethernet Frame Refers To The IP Packet Delivered From The Network Layer 4 Even At A Frame The Payload Limit Is 1500 Bytes
The Fifth Part of Ethernet Frame Format is Pad Is Actual Bits To Make A Frame At Least A Bigger Than 64 Bytes Because Any Data Unit Smaller Than 64 Bytes Will Be Considered As Clearance The Receiving Device Would Simply Ignite
The Second Part of Ethernet Frame Format is FCS Stands For Frame Check Sequence It Is Used For Error-Checking And The Integrity Verification Our Frame