Archive

Category Archives for "Networking"

5 ways the IoT must improve to achieve enterprise success

If you think you know the problems facing the Internet of Things (IoT), a new Deloitte report, Five vectors of progress in the Internet of Things, offers a great chance to check your assumptions against the IoT experts.Despite the fancy-pants “vectors of progress” language, the report’s authors — David Schatsky, Jonathan Camhi, and Sourabh Bumb — basically lay out the IoT’s chief technical challenges and then look at what’s being done to address them. Some of the five are relatively well-known, but others may surprise you.To read this article in full, please click here

5 ways the IoT must improve to achieve enterprise success

If you think you know the problems facing the Internet of Things (IoT), a new Deloitte report, Five vectors of progress in the Internet of Things, offers a great chance to check your assumptions against the IoT experts.Despite the fancy-pants “vectors of progress” language, the report’s authors — David Schatsky, Jonathan Camhi, and Sourabh Bumb — basically lay out the IoT’s chief technical challenges and then look at what’s being done to address them. Some of the five are relatively well-known, but others may surprise you.To read this article in full, please click here

What’s in a Mutable Field? — We Can’t Tell You

In conversations I often hear people using the word “mutable”. Typically it would be something similar to the following.

The IP TTL is a mutable field and decreases as it traverses a router.

If we look up the word “mutable” we find that it is something that is likely to change.

So the IP TTL is a great example of a mutable field. That value is expected to decrease at each hop throughout the network.

By contrast, IP Source Address, Destination Address, and Protocol would be immutable because it is not normal for those to change. They should stay constant from source to destination.

I know someone might consider something like NAT or PAT to change some of these attributes. While that is true, I still would not consider those mutable fields.

No related content found.

Vagrant + vQFX + Ansible = EVPN-VXLAN Fabric

Did you know that Juniper vQFX images are available in Vagrant Cloud? There is vQFX RE image and vQFX PFE one. You can use only RE image to build simple topologies, or pair every RE with PFE to use more complex protocols. There is also a bunch of examples in Juniper’s github repository.

What is Vagrant? Let me quote official website: “Vagrant is a tool for building and managing virtual machine environments in a single workflow. Vagrant gives you a disposable environment and consistent workflow for developing and testing infrastructure management scripts.” I hope you already knew that. And I also hope there is no need to present Ansible.

I played with this stuff a little bit and created a couple of new examples using full vQFX option (e.g. RE+PFE for every box) – IP fabric and EVPN-VXLAN fabric.

This is really easy way if you want to get yourself familiar with configuration of IP fabric and EVPN-VXLAN on QFX (and some Ansible as well), but don’t want to spend time figuring out how to set everything up in GNS3 or EVE-NG.

Just a few simple steps:

We’ve Added A New Juniper Security Technology Course To Our Video Library!

Our Newest Juniper course, Juniper Security (JSEC) Technology is now live! Whether you’re preparing for your Juniper Specialist Exam, or just looking to brush up on Juniper SRX Devices, this course is an excellent resource for IT security professionals. Tune in for 3 hours of instruction with Juniper expert Mauricio Spinelli by logging into your members account here.



About The Course:

In this course you will learn about the Junos Security platform and be prepared for the Juniper Specialist exam (JN0-332). You will learn about the benefits, architecture and how to deploy environments with Juniper SRX devices. This is the introduction of Security platform of Juniper Networks, after complete this course you will be ready to deploy, manage and troubleshooting Juniper SRX devices.

Show 396: Ignition Launch And The State Of The Industry

Today on the Weekly Show, the Packet Pushers officially launch Ignition, our new membership site.

Ignition offers exclusive content to help you develop as a networking and IT professional, including blogs, white papers, videos, and e-books. Over time we’ll add in-depth technical courses and other materials to help you advance your career.

You can join for free and get limited access to the site (plus Link Propagation and the Human Infrastructure Magazine), or get a premium membership for $99 a year for full access.

We also spend some time reviewing the state of the networking industry, including a look at the true drivers of automation, whether Intent-Based Networking is a real thing, why legacy networking vendors are flocking to multicloud as a strategy, the trend of AI-washing, and whether SD-WAN is going to kill private circuits.

Sponsor: Cumulus Networks

Cumulus Networks presents Networking with S.O.U.L – Simple, Open, Untethered Linux. These 4 tenants enable modern, agile networks be built to support the new demands of the business. Save an average of 45% on CapEx and approximately 74% on OpenEx by adopting these SOULful networking solutions. Learn how to leverage the top 5 automation tips and tricks Continue reading

Tale From The Trenches: The Debug Of Damocles

My good friend and colleague Rich Stroffolino (@MrAnthropology) is collecting Tales from the Trenches about times when we did things that we didn’t expect to cause problems. I wanted to share one of my own here about the time I knocked a school offline with a debug command.

I Got Your Number

The setup for this is pretty simple. I was deploying a CallManager setup for a multi-site school system deployment. I was using local gateways at every site to hook up fax lines and fire alarms with FXS/FXO ports for those systems to dial out. Everything else got backhauled to a voice gateway at the high school with a PRI running MGCP.

I was trying to figure out why the station IDs that were being send by the sites weren’t going out over caller ID. Everything was showing up as the high school number. I needed to figure out what was being sent. I was at the middle school location across town and trying to debug via telnet. I logged into the router and figured I would make a change, dial my cell phone from the VoIP phone next to me, and see what happened. Simple troubleshooting, Continue reading