August 2016
Intermediate to advanced
268 pages
6h 5m
English
Content preview from Juniper QFX10000 Series
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Chapter 1. Juniper QFX10000 Hardware Architecture
There’s always something a little magical about things that are developed and made in-house. Whether it’s a fine Swiss watch with custom movements or a Formula 1 race car, they were built for one purpose: to be the best and perform exceptionally well for a specific task. I always admire the engineering behind such technology and how it pushes the limits of what was previously thought impossible.
When Juniper set out to build a new aggregation switch for the data center, a lot of time was spent looking at the requirements. Three things stood out above the rest:
- High logical scale
- New data center architectures such as collapsing the edge and aggregation tiers or building large hosting data centers require a lot of logical scale such as the number of host entries, route prefixes, access control lists (ACL), and routing instances.
- Congestion control
- Given the high density of 40/100GbE ports and collapsing the edge and aggregation tiers into a single switch, a method for controlling egress congestion was required. Using a mixture of Virtual Output Queuing (VOQ) and large buffers guarantees that the traffic can reach its final destination.
- Advanced features
- Software-Defined Networks (SDNs) have changed the landscape of data center networking. We are now seeing the rise of various tunneling encapsulations in the data center such as Multiprotocol Label Switching (MPLS) and Virtual Extensible LAN (VXLAN). We are also seeing new control-plane ...
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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.