The Linked VM option in GNS3 worked with Arista vEOS
Oh man, I'm so exited...I've got this vurp thing in my throat! I'm working on a document featuring Andrew Coleman's LACP configvSphere with Cumulus Linux
I presented my first webinar on VMware vSphere with Cumulus® Linux® last week, which was really exciting for me. VMware has been around for 17 years and counting while Cumulus® Networks® came out of stealth mode only in June 2013. We all know that VMware vSphere works with a variety of network architectures, so I wanted to take a slightly different approach while presenting the webinar and writing this blog:
- What does Cumulus Networks bring to vSphere that others don’t?
- Does Cumulus Linux work well with vSphere? How can we test it?
VMware vSphere and Cumulus Linux
Cumulus Linux and VMware vSphere are both software solutions that run on a variety of hardware platforms. This allows customers to build and use platforms from a range of suppliers for compute, storage and networking. The software defines the performance and behavior of the environment, which allows the administrator to exercise version control and programmatic approaches that are already in use by DevOps teams. Today, switches with Cumulus Linux can be treated as servers.
Cumulus Linux with ONIE, ZTP and Automation
How does Cumulus Linux just work on top of bare metal switches? What is so different? Why can’t we do this with any switch out there Continue reading
PPP CHAP Authentication Question
The following question was recently sent to me regarding PPP and CHAP:
At the moment I only have packet tracer to practice on, and have been trying to setup CHAP over PPP.
It seems that the “PPP CHAP username xxxx” and “PPP CHAP password xxxx” commands are missing in packet tracer.
I have it set similar to this video… (you can skip the first 1 min 50 secs)
https://www.youtube.com/watch?v=5ltNfaPz0nA
As he doesn’t use the missing commands, if that were to be done on live kit would it just use the hostname and magic number to create the hash?
Also, in bi-directional authentication, do both routers have to use the same password or can they be different as long as they match what they expect from the other router?
Thanks, Paul.
Here was my reply:
Hi Paul,
When using PPP CHAP keep in mind four fundamental things:
- The “magic number” that you see in PPP LCP messages has nothing to do with Authentication or CHAP. It is simply PPPs way of trying to verify that it has a bi-directional link with a peer. When sending a PPP LCP message a random Magic Number is generated. Continue reading
Arista Deposes Andy Bechtolsheim (as CFO)
Former Infinera CFO Ita Brennan takes some work off of Andy Bechtolsheim's hands.
Industry ViewPoints: Zero-Touch Network as a Service, Part I
Telecommunications standards development organizations discuss where the industry is heading
Better than best effort — Rise of the IXP
In my last post I talked about how the incentive models on the Internet keep ISPs from managing peering and backbone capacity in a way that supports reliable communication in the face of ever growing volume of rich media content. If you haven't done so, please read that post before you read this one.It's clear that using an ISP for business communication comes with the perils associated to the "noisy neighbor" ebb and flow of consumer related high volume data movement. Riding pipes that are intentionally run hot to keep costs down is a business model that works for ISP, but not for business users of the Internet. Even with business Internet service, customers may get a better grade of service within a portion of an ISP's networks, but not when their data needs to traverse another ISP which they are not a customer of. There is no consistent experience, for anyone.
However there is an evolving solution to avoid getting caught in the never ending battle between ISP and large consumer content. As the title of this blog gives away, the solution is called an Internet eXchange Point (IXP).
IXPs are where the different networks that make up Continue reading
iPexpert’s Newest “CCIE Wall of Fame” Additions 5/15/2015
Please join us in congratulating the following iPexpert students who have passed their CCIE lab!
This Week’s CCIE Success Stories
- Denys Monteiro, CCIE #48536 (Wireless)
- Travis Bugh, CCIE #48508 (Wireless)
- Manojkumar Chandrasekaran, CCIE #15387 (Wireless)
- Rodrigo Espinha, CCIE #8847 (Data Center)
This Week’s Testimonials
Travis Bugh CCIE #48508 (Wireless)
I made the investment of getting the iPexpert Workbooks and Videos to prepare for my CCIE Wireless lab attempt. Their materials prepared me for the actual lab through well thought out mock labs that simulated the real environment you will be facing. Coupled with the video series for precise explanations on what you need to know, and I had the recipe for my own success in the wireless lab.
Denys Monteiro CCIE #48536 (Wireless)
I am very happy to announce that I passed my CCIE Wireless LAB. I would like to thank iPexpert which gave me great study material.
We Want to Hear From You!
Have you passed your CCIE lab exam and used any of iPexpert’s self-study products, or attended a CCIE Bootcamp? If so, we’d like to add you to our CCIE Wall of Fame!
Worth Reading
For whatever reason, we seem to have moved into the “summer doldrums” a bit early this year. Emails seem to just not being answered for weeks — if ever — several friends have emailed me in the last week or two ago asking if it was just them, or if the IT industry was going crazy. All that said, though, there is still a lot going on in the world of IT.
Geoff Huston — if you don’t follow the rantings of Geoff, you really should — makes a point I wish I’d thought of first. The Internet of Things isn’t necessarily a security risk so much as it’s just a stupidity risk. He uses the example of millions of smaller home based devices being shipped with hard coded IP addresses that impact time and DNS servers to make the point that once things are deployed, they don’t tend to be touched. “If it ain’t broke, don’t fix it.” He calls it the Internet of Stupid Things.
Along those same lines, I saw an article this week about how Microsoft is threatening the end of the world (or some such) because they’re ending support for Windows 2003 server. The Continue reading
Nuage Announces Underlay/Overlay Event Management Platform
During the ONUG event I met with Dimitri Stiliadis, the Co-Founder & Chief Technology Officer of Nuage Networks, who was excited to tell us about the latest product release, the Virtualized Services Assurance Platform (VSAP).
Virtualized Services Assurance Platform
The history of Nuage products has been fairly straightforward; they began with a virtualized networking solution targeted at data centers. More recently, Nuage Networks announced an expansion of that product into the branch office space. What was missing though, was a good way to monitor and manage the complex environment that was built, from underlay to overlay, from the WAN all the way to from virtual switch. When failures occur, they can be difficult to track down or, worse, you are flooded with alerts and left to figure out which ones are actually important, and which ones are the true root cause. To that end, Nuage Networks’ VSAP aims to provide visibility of the network and event correlation so that you can see what might be affected by a given network event.
VSAP is composed of two main components:
Route Monitor
The Nuage Route Monitor uses route protocols to peer with the production network in the data center, backbone, and anywhere else Continue reading
Wi-Fi Design and Capacity Planning Webinars, May 19th and 21st
Please consider attending webinars I'll be hosting on Wi-Fi design and capacity planning next week with Aruba Networks. I'll be talking about the key aspects to WLAN performance and the approach that I take to integrating coverage and capacity into a holistic design, as well as tools you can use to monitor WLAN performance after deployment to maintain a high-performing network and plan for growth.
These won't be traditional marketing webinars. If you're like me, you get invited to (and avoid) many webinars because they are too sales oriented and lack relevant engineering content. This isn't that. The goal of these webinars is to provide practical, real-world concepts and methods to help you design better Wi-Fi networks. Everyone deserves better Wi-Fi, right?
Register here:
U.S. Webinar - May 19th at 11am PDT / 2pm EDT
EMEA Webinar - May 21st at 15:00 GMT
