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You are here: Home / 2017 / Archives for July 2017

Archives for July 2017

Infrastructure As Code For The Network – Part 3

Anthony Miloslavsky July 28, 2017

In Part 1 and Part 2 we covered everything from initial device provisioning to the continuous deployment of changes to our network.  We ended with a very simplistic example that barely scratched the surface of the corner cases and scaling challenges that can be encountered along the way.  From a process perspective however, now that we have this…

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2 Comments

Packet Pushers Link Propagation 81

Drew Conry-Murray July 27, 2017

Welcome to Link Propagation, a Packet Pushers newsletter. Link Propagation is included in your free membership. Each week we scour the InterWebs to find the most relevant product announcements, industry news, and must-read posts. We drink from the fire hose so you can sip from a coffee cup. Blogs IPv6 anycast possibly done better –…

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Cisco’s SD-Access: All The Pieces

Drew Conry-Murray July 27, 2017

Here’s an overview of all the pieces and parts you’ll need to get Cisco’s SD-Access up and running.

Infrastructure As Code For The Network – Part 2 – Day 1 Operations And Beyond

Anthony Miloslavsky July 26, 2017

In Part 1 of our look into the feasibility of infrastructure as code for the network stack, we laid the foundation for device provisioning.  Now comes the challenge of operating our newly built or converted infrastructure and incorporating it into our change control processes.   Day 1 & Beyond: Daily Operations & Change Management Version Control :…

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2 Comments

Video: Talking with Russ White on OpenFabric, Models and the BGP trash can.

Greg Ferro July 25, 2017

I sat down with Russ during the IETF99 conference to dig into OpenFabric drafts that look to build an automated, self-configuring Leaf/Spine ( or multistage CLOS) IP Fabric. OpenFabric is based on IS-IS protocol and with some minor changes. Oh, and the fact that BGP is a trash can for IETF activity 🙂 The work…

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Flash Will Be EOL in 2020

Greg Ferro July 25, 2017

FINALLY

What To Learn Next? Survey Snapshot

Drew Conry-Murray July 24, 2017

Python and Ansible topped the list of what network engineers want to learn in the Packet Pushers’ latest Human Infrastructure survey.

Infrastructure As Code For The Network – Part 1 – Introduction And Day 0 Provisioning

Anthony Miloslavsky July 24, 2017

Automate, orchestrate, disable the CLI, fire your entire network team… The message has been pretty universal over the past couple of years, whether catching up on your favorite blogs, listening to the latest podcast, or engaging with other engineers on social media. While no one will deny its importance or even its inevitability (sort of), why…

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Cloud Images with cloud-init Demystified

Richard July 24, 2017

If you build multi-VM test clusters and have downloaded generic images from CentOS/RHEL/Ubuntu/Fedora you will have encountered the bootstrapping system known as cloud-init. The purpose of the post is to demystify cloud-init and tips on how to use it effectively. There is a benefit to using these pre-built VM images: they are typically a minimal…

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Link Propagation 80

Drew Conry-Murray July 21, 2017

Welcome to Link Propagation, a Packet Pushers newsletter. Link Propagation is included in your free membership. Each week we scour the InterWebs to find the most relevant product announcements, industry news, and must-read posts. We drink from the fire hose so you can sip from a coffee cup. Blogs The mystery of the hanging S3…

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Acid – ACI Configuration Tool

John W Kerns July 20, 2017

If you have ever gone through the process of setting up ACI, then you probably know how confusing and slow this process can be. Many people turn to faster solutions like Postman + JSON scripts which is prone to errors and difficult to maintain. I wrote Acid to help in this process and speed up…

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Journey into container orchestration — 5 Socks!

Richard July 19, 2017

Previously we had completed the installation of an SDN add-on, weave, in our kubernetes cluster. At this stage we have only one application pod running on the pod network, viz., kube-dns. In this transcript, 02-sock-shop.md, we will add many more application pods by trying out the the sock-shop demo. The sock-shop demo is a mock-up…

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The Salary Talk

Keith Tokash July 18, 2017

Visualize something with me fellow Pushers.  You log into whichever of your myriad free email accounts you’ve shunted job board traffic to, and, to your shock and delight, you have four emails from various recruiters for jobs in your niche! Dutifully, you open each and read the list of job requirements, reminding yourself as you…

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2 Comments

Annoying Vendor Practices: Survey Snapshot

Drew Conry-Murray July 18, 2017

Complex licensing tops the Packet Pushers’ survey snapshot list of the most annoying vendor practices.

2 Comments

Cisco’s Viptela Challenge: Integration without alienation

Eyvonne Sharp July 18, 2017

When Cisco announced its intent to acquire leading SD-WAN vendor Viptela in May of 2017, the network industry buzzed with conversation. Now, we’re in the quiet purgatory while we wait for regulatory approval. Since the deal hasn’t been finalized yet, neither company can say much about their plans for integration. But it’s clear that a…

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7 Comments

New Cisco UCS Software Leverages Turbonomic For Workload Optimization

Drew Conry-Murray July 17, 2017

Cisco’s newest generation of UCS servers includes workload optimization software from Turbonomic.

Managing Fortigate device configuration via REST API using python

Eugene Opredelennov July 16, 2017

Lately I have been growing tired of using CLI to configure network devices, so when I was faced with the project to deploy about 100 of Fortigate firewalls, I have decided that I am not that interested in copy-pasting configs via CLI and I want to do something different. Luckily for me, Fortigate did roll…

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8 Comments

Journey into container orchestration — 4 kubeadm network

Richard July 14, 2017

We install a network add-on to kubernetes, and join the three workers. Finally, we get a working multi-node cluster. Previous posts: part 1, part 2, part 3. The transcript to follow along for this post can be found here: 01-network.md. Many of the network add-ons such as Weave, or Flannel, are SDNs in their own…

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2 Comments

Packet Pushers Link Propagation 79

Greg Ferro July 14, 2017

Packet Pushers Link Propagation 79

Journey into container orchestration — 3 kubeadm init

Richard July 14, 2017

Our first transcript is ready! It is a walk-through of kubeadm init and this will build a cluster up to but not including a network. The transcript for this blog post can be found here: 00-install.md. kubeadm builds the kubernetes cluster by running one host service (kubelet), and six pods on the master node. This…

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Journey into container orchestration — 2 kubeadm lab setup

Richard July 12, 2017

In the next few posts we will setup a multi-host kubernetes toy lab using the kubeadm tutorial. This post itself will cover the lab setup and basic smoke tests. The kubeadm tutorial leaves the network as an exercise for the reader, so we will fill that in using weave. There is indeed an embarras de…

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Cisco’s New UCS Servers: Whitebox By Any Other Name

Greg Ferro July 12, 2017

Understanding the future of vendor Ethernet whitebox through an x86 server lens.

2 Comments

Journey into container orchestration — 1 Introduction

Richard July 12, 2017

In my current job, I have the need to introduce container orchestration into our backend. While we have the classic VM orchestration system in place, it is time to move our smattering of standalone docker (moby?) hosts into a more coherent whole. Thus begins my journey into container orchestration starting with Kubernetes. In this series…

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Take The Packet Pushers Audience Survey

Drew Conry-Murray July 11, 2017

The Packet Pushers annual audience survey is posted. If you can spare some time, we’d really appreciate your feedback.

Startup Radar: Volta Networks Puts The Router Control Plane In The Cloud

Drew Conry-Murray July 7, 2017

Startup Volta Networks is decomposing the traditional router by moving the control plane to the cloud.

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