June 2003
Intermediate to advanced
504 pages
12h 29m
English
Content preview from MPLS and VPN Architectures, Volume IIBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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MPLS VPN Terminology
Since the early days of X.25 and Frame Relay (the two technologies initially used to deploy VPN services), many different technologies have been proposed as the basis to enable a VPN infrastructure. These ranged from Layer 2 technologies (X.25, Frame Relay, and Asynchronous Transfer Mode [ATM]) to Layer 3 technologies (primarily IP) or even Layer 7 technologies. IBM once had a product that transported IP datagrams over Systems Network Architecture (SNA) application sessions, and TGV (a company later acquired by Cisco Systems) had implemented IP transport over DECnet sessions. Not surprisingly, with such a variety of implementation proposals, the overall terminology in the field has changed dramatically. This book uses the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.