Understanding IPv4 Header with Guest Blogger Gajanan Parwar
The TCP/IP protocol stack is the communication language used to connect millions of computers that literally spans the globe. IP is one of the important protocols of the stack. In this article we will be …
Describe the IP Packet Header and each field in a Traffic Capture
I'd like to pose a question to you, jheinrichs. (I think that posing a question can help you more than giving you the answer).If the Header Length field is only 4 bits, how can it accurately describe the …
fragment offset - concept - Cisco Learning Network
Maybe this will help. The IP header is only so big. The Fragment offset field was only allotted 13 bits. If the IP header used normal binary in that field, then 2^13 = 8,192 possible numbers (i.e there could …
Padding field on IPv4 header - Cisco Learning Network
Generally, Padding is basically used to make sure that the IP packet header has a length that is a multiple of 32 bits. It is needed because of the varying length of the options field in the IP header. …
IP Header - Cisco Learning Network
The IP packet is carrying (encapsulating) some data in its payload. It could be a TCP segment, a UDP packet, an ICMP message, an EIGRP update, etc. When IP receives the packet from the link layer it …
MTU, MSS, IHL, Total Length header - Cisco Learning Network
Hi Leo, An IP packet consists of a header section and a data section Total Length (IPv4) Field: IPv4’s Total Length field includes both the IPv4 header and the data. Internet Header Length (4 bits): This is …
What are the reasons for bad IP header? - Cisco Learning Network
Hello @mad_mavula , It depends on what you mean by "bad IP header". If it is a corrupt header, then most likely it is an issue at physical layer, where either electric signals or light in the optic wire get …
IP header questions - Cisco Learning Network
A few questions on IP header. 1. It's said the TOS field can be 3 bit IP precedence value or 6 bit DSCP. I've never seen IP precedence value on any captured IP packets. Where can I spot IP precedence …
options field on ipv4 header - Cisco Learning Network
Like LikedUnlike Reply sam86ni09 Edited by Admin February 16, 2020 at 5:01 AM Is the dhcp options field in the application layer or ip header?
Ethernet Standards - Cisco Learning Network
Feb 13, 2020 · Ethernet II came first and this frame format was introduced by the three vendors, Digital Equipment Corp., Intel, and Xerox (hence the name "DIX") as a result of a joint research carried out …