IPV4 header format in Computer Network | IPV4 Header | IPV4 header fields Follow my blog: VER: This field contains the version of IP. HLEN: It is the length of the IP header. It is 32 bits. Service Type: This service type is an indication of the quality of service requested for this IP datagram. Ex., Less Delay, High Throughput, Reliability of packet. Total Length: It specifies the total length of the datagram. Datagram = Header + Data. Header = 20 Bytes to 60 Bytes Data = 20 Bytes to 65535 Bytes Datagram Identification: It is a unique number assigned by the sender used with fragmentation. Flags: it contains 3 bits: a. The 1st bit is reserved and must be zero. b. The 2nd bit is DF (Do not fragment), 0 means allow fragmentation. c. The 3rd bit is MF (More fragment), 0 means least fragment. Fragment Offset: It is used to reassemble the full datagram. TTL: TTL stands for Time to live. It is specifying the time; datagram is allowed to travel. Protocol Number: It indicates the higher layer protocol to which IP should deliver the data in this datagram. E.g., ICMP = 1, TCP = 6, UDP = 17. Header Checksum: It is a checksum for the information contained in the header. If the header checksum does not match the contents, the datagram is discarded. Source IP address: It specify the logical address of sender. Destination IP address: It specify the logical address of destination. IP Options: It is a variable length field used for control or debugging and measurement. E.g., Timestamp, security and record route etc… 0:00 Introduction 0:18 Introduction of IPV4 (Internet protocol version 4) 1:19 IPv4 header fields (explained one by one) If you like my video contents, please LIKE, COMMENT, SUBSCRIBE & SHARE with your friends. -------------------------------------------------------------------------------------------------------------- Check out our other video on our channel page Principle of Application Layer Cookie explain using animation: Persistent HTTP vs Non Persistent HTTP: Email: -------------------------------------------------------------------------------------------------------------- You can always connect with me at: Follow my blog: Like my Facebook page: Follow me on Instagram: Follow me on twitter: Subscribe me on youtube: -------------------------------------------------------------------------------------------------------------- Playlist available on my channel: Network Security (CNS, INS, IS): Computer Network (CN) with animation: VFX Animation & Fun Videos: Comupter Organization & Architecture (COA, CA,CO): Assembly Language Programming: Computer Graphics: #IPV4 #IPV4_Header #IPV4_Header_Structure #IPV4_Header_Format #IPV4_Datagram #chirag_bhalodia #chiragbhalodia Keep learning, keep supporting 🤝✨💯