ArchiveDecember 2014

Junos PyEZ Installation & Initial Testing on Mac OS X

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I am educating myself about network automation. As I spend a lot of time in the Juniper world, a natural  place to work on automation skills is by leveraging PyEZ. What is PyEZ? Juniper describes it this way in their techwiki. Junos PyEZ is a microframework for Python that enables you to remotely manage and automate devices running Junos OS. In short, you get a bunch of classes you can act on in...

Book Review: Juniper QFX5100 Series by Doug Hanks (O’Reilly)

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I was sent a complementary copy of Juniper QFX5100 Series: A Comprehensive Guide to Building Next-Generation Networks by Doug Hanks. Doug works for Juniper. I’ve met Doug a few times, and he’s been a guest on the Packet Pushers podcast. The book is not simply a guide to the QFX5100 Ethernet switch, although it certainly is that, including a complete architecture breakdown and...

VMs Running In My ESXi Networking Lab as of 23-Dec-2014

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Over the last several months, I’ve been building a lab full of virtual machines related to networking. I am using 2 independent ESXi hosts running vSphere 5.5 running on Haswell motherboards with 32GB of RAM, 256GB local SSDs, and a Synology DS1813+ for big, slow remote storage I access with NFS. You can read about my lab server build here. You might be wondering why I’m bothering...

Is Juniper About To Kill Their Entire Security Line? It Seems Not.

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This is a quick follow up to a post I made a bit ago about rumored changes to Juniper’s security portfolio. I left that article with one big question in my mind.  Is Juniper on the verge of shuttering their entire security portfolio, including the SRX firewall platform and Firefly Perimeter (vSRX)? The answer to that is “no” from everyone I spoke to that’s in a position to...

What is a data center operating system (DCOS)?

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I’ve become aware of a new industry term called the “Data Center Operating System” (DCOS). The big idea seems to be abstracting away individual elements of the data center, allowing compute nodes to get spun up on top of infrastructure building blocks, whether physical or cloud. In theory, you supply hardware or cloud resources, light up your DCOS, and thereafter interact with the DCOS to do all...

What does “scale out” vs. “scale up” mean?

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When researching data center network architectures, you will find the terms “scale out” and — rather less frequently — “scale up” used. What do these terms mean? I’m going to discuss these terms in a networking sense. If you search, you’ll find that applications and storage also have concepts of scaling out vs. up. Those other areas use the terms in similar ways, although the...

Friday News Analysis: Cisco Sues Arista For Patent + Copyright Infringement

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Cisco is suing Arista in a pair of actions that will be interesting to follow as they wind their way through the courts. See post entitled “Protecting Innovation” here. In the thirteen years I’ve been General Counsel of Cisco, I can count on one hand the number of times we’ve initiated suit against a competitor, supplier or customer. It’s therefore only after thoughtful and serious...

Cisco VIRL ESXi Installation Notes

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Note: I was part of the early VIRL beta program. For my efforts in that beta, I was provided a free one year subscription to VIRL, worth $199. I’ve got Cisco VIRL up and running on ESXi 5.5. The installation was mostly smooth, but there were some hurdles to overcome. Here are my installation notes while they are still fresh in my head. After purchasing VIRL, you have to wait to get a link...

Ethan Banks is a podcaster and writer with a BSCS and 20+ years in enterprise IT. He's operated data centers with a special focus on infrastructure — especially networking. He's been a CNE, MCSE, CEH, CCNA, CCNP, CCSP, and CCIE R&S #20655. He's the co-founder of Packet Pushers Interactive, LLC where he creates content for humans in the hot aisle.

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