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Category Archives for "Router Jockey"

Mandatory Cisco DNA Licensing – is this the Future??

With the release of the new 9200 series switches many enterprise organizations are starting to look towards the future. Cisco has also been looking towards the future… of their profit margin. With the 2960x platform is nearing it’s EOS/EOL announcement, Cisco has been working to promote the new hardware. And by now most Cisco enterprise customers have realized that DNA Center licensing is mandatory on your initial hardware purchase. This is certainly a deviation from Cisco’s normal à la carte licensing, but what do you think is the driving force behind all of this?

The era of SaaS and Subscription based licensing has been upon us for some time. Last year Gartner predicted, “By 2020, all new entrants and 80% of historical vendors will offer subscription-based business models”. These shifts to recurring-revenue models are the latest adaptation for companies like Cisco to continue to pad their bottom line with dollars their customers may not be ready to spend. After all, why would Cisco miss out on dollars left on the table?

When I started laying out the network hardware roadmap for the next 24-36 months, I quickly realized that costs for the Catalyst 9200 series will raise per port Continue reading

AIOps the next big thing for Enterprise IT?

Out of everything I think will be big in 2019, AIOps is near the top of the list. My current prediction is Artificial Intelligence (AI) making big moves in the enterprise IT Infrastructure and Operations market. AI-based technology is a hot topic in the media these days, everyone is exploring its benefits in a wide range of markets. From self-driving cars and industrial automation to advertising and fraud prevention. It’s no surprise that 2018 was predicted to be a dominating year for AI in IT. While I believe 2018 was a key year for AI getting it’s foot in the door of IT Ops, the reality is lagging behind the hype. In IT we hear a lot about machine learning, and big data, but with the reality of how this data is organized in most enterprises, the onus is still on us to get that data laid out in an organized structure to extract the potential that AI promises.

But how does all of this relate to IT Infrastructure and Operations? AIOps is the combination of AI and IT Operations. And while the IT community hears the AI related buzzwords, not many of us know where or how it can Continue reading

Gartner – more than a magic quadrant

In the past I have personally given a lot of flack towards Gartner, but that was when I was in a different stage of my career. Over the past two years I’ve transitioned into management, and with that had to learn several valuable lessons. The most important, for me, being expectation management, but that’s for another blog post. The second most important would have to be effectively leveraging resources across all channels. And that’s why I wanted to talk about Gartner.

As an engineer, I found them to be a bit pedantic. They wrote these long winded articles that seemed to never get to the point, i.e. does this product deliver what the company is selling? — A lot of the analysis I’ve seen from Gartner has gotten much better in the past 10-12 years, and while I appreciate that, I think we actually have to thank ourselves for that, rather than Gartner. The freely available content available on blogs, like RouterJockey, has forced anyone hoping to sell content to step up their game. But I digress. My engagements with Gartner always felt generic, I consistently had issues with the amount of knowledge the analyst on the phone had. Continue reading

PCAP PCAP PCAP – Changes to RJ Store

I made a couple changes to the RouterJockey store this week and I wanted to make sure I got the word out. Previously the store worked in sprints that I tried to open up 2-3x a year. Instead of trying to manage these sprints, and keep the products updated, I’ve now made the store available year round. It still operates in sprints, but instead of being 2-3 weeks long, they’re only 3-4 days each.

On top of being more available, the store now has a few new products, nothing too exciting, but we do have a RJ phone case, a PCAP mug, and a couple stickers for sale. Teespring has recently added these products and as I get requests for other products I will be sure to add them. As usual, if you have any questions, hit me up on twitter or use the contact form.

Click here, or use the store item in the menu bar to visit my new storefront.

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IP Infusion powering the world from behind the scenes

Founded by Kunihiro Ishiguro and Yoshinari Yoshikawa the founders of GNU Zebra, came together to form IP Infusion back in 1999 as a commercial-grade, hardware-independent networking software company. If you’re not familiar with Zebra, you probably know it’s little brother Quagga which powers everything from Cumulus Linux to Vyatta and even my old digs.. Imagestream routers. Ishiguro and Yoshikawa took Zebra, and built ZebOS, which has been working behind the scenes in products we all use every day for years. IP Infusion’s ZebOS powers everything from F5 LTM’s and Citrix Netscaler’s to Plexxi, SK Telecom, and Huawei networking products.

Today IP Infusion is selling two variants of ZebOS to OEMs, OcNOS and VirNOS. OcNOS is a full featured network OS built specifically for White Box OEMs looking for switching, routing, MPLS, and SDN support. It can support a hybrid, centralized, or distributed network framework which provides a scalable, modular, and robust framework that can be deployed on merchant silicon. VirNOS is their NFV solution that can be used for distributed or cloud based vCPE, vPE, or vRouters in your data center.

Whitebox networking is a really exciting market that I have been looking into since the SDN craze started. Continue reading

VMware NSX is something something awesome

At times I have trouble focusing on writing articles for some of the presentations I am exposed to at Tech Field Day. Because of that, I really wanted to try something different. This article is more of my free-formed thoughts about NSX and why I’m excited to deploy it at my current $job. From the time I heard that the NSX team was going to be presenting at TFD15 for 4 hours, I knew that I would be writing this article because. Unfortunately it took me far too long to gather up this half formed thought.

First things first – NSX and Micro-Segmentation

I love the concept of Micro-Segmentation that NSX enables. Think of NSX as a virtual distributed firewall that is integrated with your hypervisor, but it really is so much more. This allows you to connect a security policy directly to the vNIC of your guest VM’s. Attaching it to the VM allows that policy to follow the VM anywhere, and everywhere it goes. You don’t have to worry about inter- or intra-VLAN segmentation as all of that is done on each vNIC. On top of that, NSX’s firewall is PCI DSS 3.2 compliant! Another rather compelling Continue reading

PCAP t-shirts just in time for CLUS17

Hey guys, I just wanted to drop a quick note to let you know that I’ve relaunched my teespring shirt campaigns with enough time that you should get your orders before Cisco Live US 2017. I’ve got several types of clothing under each design, so make sure you look to see if I have what you’re looking for. This campaign is only open for 14 days – so get yours while you can!

As usual, send comments / suggestions / etc to @tonhe on twitter.

Thanks again, and I hope to see you at #CLUS17

Click below to enter my teespring storefront

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PNDA provides scalable and reactive network analytics

PNDADuring Networking Field Day 15 our friends from the Linux Foundation, including Lisa Caywood, briefed us on a recent “acquisition” from Cisco. PNDA (Panda) is an open source Platform for Network Data Analytics, which aggregates data from multiple sources on a network including, real time performance indicators, logs, network telemetry, and other useful metrics… then in combination with Apache Spark, the data is analyzed to find useful patterns. None of this should be confused with Cisco’s recent announcement of the Tetration analytics platform. Tetration is a data center focused solution focused on a very particular space, where PNDA is more of a horizontally focused platform that is cross-vendor and cross-dataset. But this project is in no way a fork of the Cisco Tetration product as they evolved from completely separate code bases. Because PNDA is an open source initiative, it is able to take advantage of many existing projects, like Apache Spark, to build a robust analytics platform. Because of this, it allows them to remain extremely flexible.  While PNDA’s focus is solely on network, but there are other projects out there that are utilizing it as a jumping off point to perform Continue reading

Networking Field Day 15 – A new delegate emerges

Networking Field Day 15Yet again I find myself honored, and questioning their selection methods, by being selected for a Networking Field Day event. Networking Field Day 15 kicks off April 6 and 7th in San Jose California. Each and every Tech Field Day event is always an amazing opportunity to engage with vendors and industry peers. But trust me, I’m using the term peer rather loosely… While we may work in the same industry, many of these folks are way smarter than me! It seems the delegate list for NFD15 is certainly no exception to that rule! While I’ve met and become friends with roughly 75% of the “team” I get to meet a couple new faces which is always exciting. At least one of these faces I’ve spent hours talking to on Skype, but never actually met in person. I’m looking at you Nicolas. ;)

Networking Field Day Vendors

I took a look at the vendor list for this as soon as I heard they needed another delegate. Looking at the current line-up I got pretty excited, everything seems rather relevant to things I want to see! Looks like we’re going to see presentations from Gigamon, which specializes in the network tap and visibility market. I Continue reading

Ixia Vision ONE – Tap the Planet

Ixia LogoWhenever I start talking about network visibility and aggreagation taps I can’t help but think of The Matrix. Millions of packets flowing through your network every minute of every day, tapping into that can be a daunting exercise. Luckily we have some new blood in this space, at least in my view, Ixia Vision ONE. For those of you that recognize the name, yes I’m talking about that Ixia.. previously one of the leaders in the load testing market, they’ve moved into the network packet broker space.

Vision ONE is Ixia’s all-in-one product attempts to provide assurance that the network traffic you want to reach your monitoring and security tools is actually reaching your tools. Vision ONE is able to take the input from your device, and send it out in several directions, applying filters to the traffic as needed. This means that you can filter out specific traffic and send it to a monitoring / security tool with traffic it doesn’t need to process. All of this is managed through a clean, easy to user interface that displays the connections between the TAP’s physical ports, filters, and tool ports.

Take a look at the Vision One demo here.

My Continue reading

Forward Networks – A forward approach to formal verification

Forward Networks has stepped out of the shadows to announce their Network Assurance platform, and I was fortunate enough to be a delegate for Networking Field Day 13 to see their first public briefing. We were all excited to set foot onto the Andressen Horowitz campus that day, but none of us were quite sure what exactly to expect.

Forward Networks was founded by David Erickson and Brandon Heller, PhD in Computer Science from Stanford University, who saw the great need for help in the networking market and decided to tackle a challenge that no one else recognized. They worked in Nick McKeown’s Lab at Stanford University back in 2006 before SDN was ever put on a Networking Bingo card, let alone even heard of. They helped create the standards and shape OpenFlow as it came into existence. Working on bleeding edge SDN networks they realized that the tools network engineers were dealing with were wholly insufficient to troubleshoot many advanced and complicated networks.

In 2013 they founded Forward networks with the goal of understanding how networks work at the functional level. They’ve written an algorithm that can take in large amounts of data from your devices and build a Continue reading

Intel Atom SoC bricking more than Cisco products

Intel AtomLooks like the culprit in the recent Cisco debacle is the Intel Atom “System on Chip” (SoC) that Cisco used in it’s gear. My sources within Cisco won’t give up the goods, but many seem to be pointing to Cisco, although a single source at Cisco seemed to indicate there was another player included in this issue but wouldn’t comment. The real footing of these Intel accusations come from Intel itself. Back in Janurary 2017, they updated their spec document documenting an issue with the LPC clock on the Atom s2000, with no workaround and a system that is unable to boot, this depicts a grim outlook for our networking devices.

The news gets worse though, according to a recent article from The Register Cisco isn’t the only one experiencing issues.

People with Synology DS1815+ storage boxes have been reporting complete hardware failures; the DS1815+ is powered by an Intel Atom C2538. […]

Other vendors using Atom C2000 chips include Aaeon, HP, Infortrend, Lanner, NEC, Newisys, Netgate, Netgear, Quanta, Supermicro, and ZNYX Networks. The chipset is aimed at networking devices, storage systems, and microserver workloads.

For now, only time will tell what other devices are going to come out Continue reading

Cisco goes public with Clock Signal Component Issue

A couple months ago many engineers started hearing rumors regarding an ISR 4331 recall, and problems surrounding the device. Until this week, none of us had very good information, but it seems that today Cisco has officially released some information regarding the problem. Many of us have received phone calls at this time from our account managers… while some of us, myself included, have been left in the dark. This is troubling considering how many products are out in the field.

Recently, Cisco became aware of an issue related to a component manufactured by one supplier that affects some Cisco products. In some units, we have seen the clock signal component degrade over time. Although the Cisco products with this component are currently performing normally, we expect product failures to increase over the years, beginning after the unit has been in operation for approximately 18 months. Once the component has failed, the system will stop functioning, will not boot, and is not recoverable.



Cisco has identified the products that are affected by this issue and published an FAQ along with the Field Notices on their site. The list of products varies across the line and includes the following products that Continue reading

Networking Field Day 13 – Sneak Preview

This is going to be a busy week for the Tech Field Day family. They have delegates en-route to Tech Field Day 12 this morning, and Wednesday the crew for Network Field day 13 arrive. I can’t express how excited I am about going to Networking Field Day 13 this week. I haven’t been to an actual NFD event since NFD2, although I did get to go to the TFD9 event in Austin a couple years ago. I can’t wait to land in San Jose. For those new to this concept, Networking Field day is an event that is focused on bringing together IT product vendors and thought leaders in the industry to share information and opinions in a presentation and discussion format. Please be sure to read my disclaimer page on this topic. These events are streamed live, so if you want to listen in while we talk about the latest and greatest technologies from the vendors we’re meeting with, or if you just want to listen to us moan and groan at the occasional Gartner or NASCAR slides… you should tune in. On the menu for this week we have a number of exciting companies that I’d Continue reading

5 important reasons you should learn scripting

scripting-blurToday’s IT landscape if full of software defined marketecture, and lore of a dystopian future full of network engineers that do nothing but write code. But in reality, there are plenty of actual reasons you should be learning programming, or at least some basic scripting.  For many network engineers programming is not new, we have all been hacking together shell, Perl and Python for a VERY long time. While the requirements in the future may change, today it is not necessary to become half network engineer half software engineer, but learning the basics now will keep you in the know. Learning the basics of logic and loop statements will not only help you speed up day to day tasks, but it will help you understand other languages as you expand your knowledge in the future. So, here are my top 10 reasons I think you need to learn scripting.

1: Automation can save you time

Writing a script for common / repetitive tasks can save you a staggering amount of time. Over the years I have written hundreds of scripts to aide in everything from Data Center VLAN/SVI management to banning/unbanning MAC addresses from multiple wireless lan controllers.

2: Continue reading

The complexity required for robustness, often goes against robustness

In the past few months we have seen major outages from United Airlines, the NYSE, and the Wall Street Journal. With almost 5,000 flights grounded, and NYSE halting trading the cost of failure is high. When bad things happen IT personal everywhere look at increasing fault tolerance by adding redundancy mechanisms or protocols to increase robustness. Unfortunately the complexity that comes with these additional layers often comes with compromise.

The last thing your boss wants to hear is, “The network is down!”. Obviously it’s your job to prevent that from happening, but at what cost? Many of us enjoy twisting those nerd knobs, but that tends to only harbor an environment with unique problems. I too fear the current trend of adding layer after layer of network duct tape to add robustness, or worse, to try and fix shortcomings in applications. NAT, PBR, GRE, VXLAN, OTV, LISP, SDN… where does it end!?

The greater the complexity of failover, the greater the risk of failure. We often forget the lessons of our mentors, but keeping the network as simple as possible has always been best practice. As Dijkstra said, “Simplicity is a great virtue but it requires hard work Continue reading

Site Upgrades for September 2015

First, I want to apologize for not doing my job. Over the past couple years I’ve let this site become slightly stagnant. I won’t attempt to make excuses, but I will say that I’m in a much better place now. Hopefully inspiration will continue to strike, and I will continue to put pen to paper… or finger to keyboard?

2015-09-18 at 8.52 PMOver the past couple weeks I’ve put a fair amount of time and monetary resources into RouterJockey. I’ve fixed quite a few CSS bugs, without hopefully creating more. I purchased an SSL certificate and moved the site to HTTPS, which helps me more than it really does you… but in doing so, I’ve also enabled SPDY 3.1. SPDY should help load times, but Nginx was already doing a pretty good job. Oh, in order to get SPDY up to 3.1 I was forced to migrate away from the Ubuntu repo for Nginx.. but that’s not a huge deal.

I’ve also spent some time redesigning the menu bar, adding new links, removing some useless ones, and writing an all new disclaimer. Please be sure to read and understand everything posted on that page before attempting to read any of my Continue reading

RouterJockey is launching a clothing line?!?!???

Ok maybe that title is a bit grandiose… But due to the great response I received Friday morning from the launch of the original PCAP shirt, and the IPv6 follow-up, I decided to create a few new designs and put everything into a store front. If the demand continues I will continue to publish new shirts, and keep up with relaunching original designs into their own campaigns. Not that I expect the demand for these shirts to continue long term, but you never know. Nevertheless I appreciate everyone’s support thus far.

But I need you! Yes… You! I need your ideas, and most importantly I need your feedback. So please, contact me on twitter and let me know what you think. If you like what you see, please share the url for the store.

Without further ado…

2015-09-11 at 1.47 PM-1
Click to visit the RouterJockey shop

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PCAP or it didn’t happen…. The t-shirt!

front
Some days I don’t know why I do things… But last night I was playing around with creating a PCAP meme when my friend Josh Kittle said he’d be interested in a t-shirt like that. I got to thinking about it and realized some network engineers out there also might enjoy something like this, so I fired up a campaign on teespring!

Let me know what you think, I may do other shirts in the future as this was fun to work on. If you have any ideas you don’t plan on using, let me know and I might work on developing them.

Oh, and since Jay Franklin had to have an IPv6 shirt… I also launched another version with an IPv6 packet capture, and the #IPv6 hashtag on the back.

ipv6-shirt

Click one of the shirts to see them on teespring…

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ASA v9.4 Elliptic Curve Cryptography with TLS1.2

cryptoWith ASA version 9.4 Cisco has added support for Elliptic curve cryptography (ECC), which is one of the most powerful types of encryption in use today. While ECC has been in use since 2004, only it’s recently use has skyrocketed. Part of this reason is power consumption… In my limited understanding, experts have concluded that a shorter ECC keys are just as strong as a much larger RSA key. This increases performance significantly, which reduces the power required for each calculation. If you want to learn more about ECC, check out this fantastic article from arstechnica.

That brings me to the issue. Last night I failed over some 5585x’s running > 9.4 that happened to be doing Anyconnect SSL VPN. This morning, my client was seeing issues. Luckily the solution was simple and a college pointed me to the solution fairly quickly. From the Cisco support community page I found later on….

For version 9.4.(x) we have the following information:

Elliptic curve cryptography for SSL/TLS—When an elliptic curve-capable SSL VPN client connects to the ASA, the elliptic curve cipher suite will be negotiated, and the ASA will present the SSL VPN client with an elliptic curve Continue reading