[ary]

Adding to the already good recommendations on this thread:

- Interconnections: Bridges, Routers, Switches, and Internetworking Protocols (https://www.amazon.com/Interconnections-Bridges-Switches-Int...)

It covers a broader range of topics than some of the other books mentioned here and helps with an understanding of where existing tech comes from and why. Also it covers topics that you don't necessarily need to know if you're only operating in a cloud environment, but that help to understand what is going on in those far off data centers.

[dayofthedaleks]

This book is so great. The author _invented Spanning Tree_ and it's still a great foundational text along with Stevens' TCP/IP Illustrated vols 1&2.

Hardcopies of all 3 are dirt cheap and eternally valuable for the endpaper diagrams while inspecting packet captures alone.