I can’t provide or link to a PDF copy of Computer Networks by Tanenbaum and Wetherall (8th edition) due to copyright restrictions. However, I can offer valuable to help you find, understand, and use this specific edition effectively.
Semana 8 — Redes de área extensa, MPLS y redes móviles
That said, I can generate based on Tanenbaum's work — as if an 8th edition were to be released — and guide you on legitimate sources.