On Link in IPv6
As an avid reader of RFCs and RFC drafts, I’m always running across little bits of knowledge I either already knew and forgot (I forget a lot of things), or things I didn’t know and wouldn’t have expected. RFC5942, published way back in 2010 (a long time in network engineering terms), discusses a topic I […]
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How Does QoS Work?
This sponsored blog post was written by Clark Zoeller, CCIE #13760, Sales Engineer with ActionPacked Networks. Quality of Service (QoS) is a suite of technologies used to manage bandwidth usage as data crosses computer networks. Its most common use is for protection of real-time and high priority data applications. QoS technologies, or tools, each have […]
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The post How Does QoS Work? appeared first on Packet Pushers Podcast and was written by Sponsored Blog Posts.
Show 171 – Cisco FabricPath Deep Dive Part 2
Cisco FabricPath is a TRILL-based layer 2 forwarding technology that can take the place of spanning-tree. Allowing a fully-meshed layer 2 network to forward traffic across all links, FabricPath helps customers to make the most of their expensive 10GbE and 40GbE interconnects. In this show, Jamie Caesar, Colby Glass, and Ed Diaz discuss real-world FabricPath […]
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The post Show 171 – Cisco FabricPath Deep Dive Part 2 appeared first on Packet Pushers Podcast and was written by Ethan Banks.
Hadoop for network engineers part 2 – adding more nodes
In the first article here, I walked through importing netflow data into a single Hadoop instance (pseudonode) and mentioned a progression of the project to add multiple nodes. The ability to do distributed storage and distributed processing of data is ultimately the benefit of using Hadoop/HDFS. So, let’s expand on the project and add one or […]
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The post Hadoop for network engineers part 2 – adding more nodes appeared first on Packet Pushers Podcast and was written by JR Mayberry.
Show 170 – The Spanning Tree Story and More SDN Analysis
This week it’s Greg was configuring spanning tree in the data centre and had a problem with a switch cluster that didn’t work proper. How much networking do you need in a data centre ? Lets say you purchases 2 x 32 port 40GbE switches (common Trident2 configuration) for USD$30K and you use QSFP breakouts […]
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The post Show 170 – The Spanning Tree Story and More SDN Analysis appeared first on Packet Pushers Podcast and was written by Greg Ferro.
A Bit of Irony…
There’s something terribly wrong about this… RUSH hour in Nairobi can be a nightmare. “Most motorists don’t follow traffic rules and small inconveniences like a minor traffic accident or even a sudden downpour can cause delays of up to an hour,” says John Kimani, a small business owner in the Kenyan capital. A text message […]
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Your Weak and Broken Heart
I can make you happy, I can give you everything you dreamed of. You already know that right? I’ve tried to make you understand this again and again; I’ll fall at your feet at a moments notice, but somehow I’m always here in the background, a shadow. No matter your heart, somehow I’m always put […]
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The post Your Weak and Broken Heart appeared first on Packet Pushers Podcast and was written by Steven Iveson.
Show 169 – Cisco FabricPath Deep Dive Part 1
Cisco FabricPath is a TRILL-based layer 2 forwarding technology that can take the place of spanning-tree. Allowing a fully-meshed layer 2 network to forward traffic across all links, FabricPath helps customers to make the most of their expensive 10GbE and 40GbE interconnects. In this show, Jamie Caesar, Colby Glass, and Ed Diaz discuss real-world FabricPath […]
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The post Show 169 – Cisco FabricPath Deep Dive Part 1 appeared first on Packet Pushers Podcast and was written by Ethan Banks.
Introduction to Segment Routing
When I read the latest posts about Fast ReRoute from Russ White and as I had an introduction from a coworker contributing to some drafts, I thought it was the right time to write my first article on PacketPushers. And here it is the Introduction to Segment Routing! What is it? It is a new […]
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The post Introduction to Segment Routing appeared first on Packet Pushers Podcast and was written by Youssef El Fathi.
Show 168 – Juniper QFX5100 & Virtual Chassis Fabric – Sponsored
Juniper Network’s Doug Hanks & Satish Surapaneni join Juniper customer (and Kool-Aid drinking fanboy) Kurt Bales in a discussion about the newly announced QFX5100 line of switches with Ethan Banks & Greg Ferro. Along the way, we talk about useful new technologies enabled by the QFX5100, such Virtual Chassis Fabric & TISSU. This is one of […]
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The post Show 168 – Juniper QFX5100 & Virtual Chassis Fabric – Sponsored appeared first on Packet Pushers Podcast and was written by Ethan Banks.
‘Hello world’ for network engineers exploring Hadoop
It is hard to ignore all of the hype around Hadoop and Big Data these days. Like most infrastructure engineers, we tend to focus on how to build highly-available, highly-scalable networks – and I’m no exception. However, it is still important to me to keep up with and implement projects on popular trends, directly infrastructure […]
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The post ‘Hello world’ for network engineers exploring Hadoop appeared first on Packet Pushers Podcast and was written by JR Mayberry.
Healthy Paranoia Show 19: The ABCs of PCI DSS
Hello boys and girls! What time is it? That’s right, it’s time for another fun-filled episode of Healthy Paranoia! Joining us in the top secret Healthy Paranoia treehouse and just in time for the release of PCI DSS 3.0 is special guest, Dr. Anton Chuvakin, Research Director at Gartner and recognized security expert in the […]
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The post Healthy Paranoia Show 19: The ABCs of PCI DSS appeared first on Packet Pushers Podcast and was written by Mrs. Y.
F5 Networks iRule Event Order – HTTPS/SSL – Client & Server Side
As promised, here’s the event order for HTTPS. I’d be grateful to any F5′ers out there that can pick holes in this, if any. Apologies for the ‘slimming’ of the diagram caused by the WordPress theme. Right click and view in a new tab or save as to see it in all it’s glory. Last […]
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The post F5 Networks iRule Event Order – HTTPS/SSL – Client & Server Side appeared first on Packet Pushers Podcast and was written by Continue reading
F5 Networks iRule Event Order – HTTP
I hit an issue recently where I thought I knew what was what but found myself doubting my knowledge. To that end, here’s a diagram detailing the iRule event order where HTTP traffic is concerned – I’ll follow up shortly with one for HTTPS flows. I’d be grateful to any F5’ers out there that can […]
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The post F5 Networks iRule Event Order – HTTP appeared first on Packet Pushers Podcast and was written by Steven Iveson.
On IPSec complexity – maybe AWS VPC’s IPSec will emerge as a de-facto standard
Here is a delayed reaction to the posts about IPSec complexity by Jason Edelman and Ivan Pepelnjak last month. AWS might give us decent IPSec ‘standard’ to rally around. There has been plenty of discussion of the past few years about whether it’s a good idea for providers and orchestration stacks to adopt the AWS APIs. There’s no need to […]
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The post On IPSec complexity – maybe AWS VPC’s IPSec will emerge as a de-facto standard appeared first on Packet Pushers Podcast and was written by Nik Weidenbacher.
Show 167 – Cisco ACI Software Defined Networking – A First Look
Ethan and Greg got together to talk over the Cisco Application Centric Infrastructure (ACI) announcement this week. From the information that we have available to us, we look at some of the early concepts and technology that we know about. 40 GB BiDir optics and what it means for data centre design Nexus 9000 hardware […]
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The post Show 167 – Cisco ACI Software Defined Networking – A First Look appeared first on Packet Pushers Podcast and was written by Greg Ferro.
IETF 88 Technical Plenary
This is a long video, but you need to watch it. I’ll have a couple of longer reports on IETF 88 in the coming weeks, as I get the chance to write stuff up. Edit: For anyone who’s interested in this topic specifically, please join the perpass IETF mailing list.
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Show 166 – SDN Controller Strategies
We know that networking for last few months is all about SDN Unicorns and other Applications. This week we are joined by Mike Dvorkin and Brent Salisbury to talk about the science of building SDN controller application. It's not easy to decide how to build a model that allows for business policy to map onto flow management, virtual server and physical devices so we gathered in the virtual boardroom to discuss the fundamental nature of SDN Controller and basic concepts of what you want to build and why.
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The post Show 166 – SDN Controller Strategies appeared first on Packet Pushers Podcast and was written by Greg Ferro.
Remote LFA
In the last episode in our world wide tour of fast reroute mechanisms, we discussed Not-Via. While an interesting concept, Not-Via does require a number of extra IP addresses, as well as a new set of special routing advertisements, to work properly. So while Not-Via is conceptually simple, it hasn’t ever really been accepted as […]
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Cisco IPsec VPN breakage on Windows 8[.1] and OS X 10.9
Oh, to be a Cisco IPsec VPN user these days… Now I know that we should get with the program and move to AnyConnect, since Cisco is EOL-ing the venerable Cisco VPN Client in 2014, but we have a large installed base, and since Cisco stopped making IPsec clients for Mac and Linux back in the […]
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The post Cisco IPsec VPN breakage on Windows 8[.1] and OS X 10.9 appeared first on Packet Pushers Podcast and was written by Will Dennis.