Lin

Protocols and packet analysis

Technical editor at 7n4.cn covering data-link and IP topics. Articles use protocol specifications and packet captures to explain fields and behavior that are easy to confuse.

Articles by this author

What the Four Bytes After a MAC Address Mean in an 802.1Q Capture2026-10-08 22:12:16 UTC
Who Is Who in a Wi-Fi Frame's MAC Address Fields?2026-10-07 16:04:58 UTC
How DHCP Uses MAC Addresses, and Static Reservations in Practice2026-09-02 10:00:00 UTC
How the ARP Protocol Works: From IP to MAC2026-08-27 10:00:00 UTC
The Switch MAC Address Table: Learning, Ageing and Flooding2026-08-23 10:00:00 UTC
EUI-64 and IPv6 Address Generation: From MAC to Interface Identifier2026-08-19 10:00:00 UTC
The IEEE OUI Registry: MA-L, MA-M and MA-S Explained2026-08-15 10:00:00 UTC
How Multicast MAC Addresses Are Mapped2026-08-11 10:00:00 UTC
Broadcast and Other Reserved MAC Addresses2026-08-08 10:00:00 UTC
Reading the First Byte of a MAC Address: the U/L and I/G Bits2026-08-05 10:00:00 UTC
MAC Addresses Versus IP Addresses: Why You Need Both2026-08-02 10:00:00 UTC
What Is a MAC Address? Structure, Rules, and How It Works2026-07-04 02:13:35 UTC

Questions or corrections? Please use the contact page.