Header Diagrams

This is a collection of header diagrams created by Troy Jessup. I wanted to save these for reference since they are so incredibly useful.

Retrieved from here: Web Archive

BGP Packet Header

DNS Packet Header

ICMP Packet Header

IPv4 Packet Header

IPv6 Packet Header

OSPF Packet Header

TCP Header

UDP Header

Ethernet II Frame Header

Ethernet II Frame Header with 802.1q tagging