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 …
fragment offset - concept - Cisco Learning Network
An IP header is at least 20 bytes long, so the maximum value for "Fragment Offset" is restricted to 8189, which leaves room for 3 bytes in the last fragment.
Describe the IP Packet Header and each field in a Traffic Capture
The IP header is at its minimum 20 bytes long, so we have 65535 - 20 bytes left = 65515 bytes left. On the other hand, Fragment Offset is 13bits (counting bytes) long. The fragment offset is measure in …
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 …
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 …
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. …
L2TPv3 encapsulation - Cisco Learning Network
L2TPv3 encapsulation L2TPv3 has two modes of operation depending on the packet encapsulation format selected: IP or UDP. L2TPv3 over IP uses a dedicated IP protocol (115) value to carry L2TP …
Ethernet Standards - Cisco Learning Network
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 in the …
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?
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 …