Yet another blog about Segment Routing-Part 1

In this blog post we will be taking a deeper look at Node/Prefix SID and SR/LDP Interworking. If you work or have an interest in the Routing area, then by this time you may have already heard about Segment Routing (SR) and I am assuming that you already have some awareness with the basic concepts of […]

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Diptanshu Singh

Diptanshu Singh

Diptanshu Singh,(3xCCIE,CCDE) is a Sr. Engineer mostly focused on service providers , data center and security. He is a network enthusiast passionate about network technologies so not only is it his profession, but something of a hobby as well.
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The post Yet another blog about Segment Routing-Part 1 appeared first on Packet Pushers Podcast and was written by Diptanshu Singh.

PQ 49 – CloudGenix Application Driven SD-WAN – Sponsored

Introducing CloudGenix, an SD-WAN company that not only reduces WAN management problems, but also makes it easier to enforce business policy in the cloud.

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Ethan Banks

Co-host at Packet Pushers

Ethan Banks, CCIE #20655, has been managing networks for higher ed, government, financials and high tech since 1995. Ethan co-hosts the Packet Pushers Podcast, which has seen over 3M downloads and reaches over 10K listeners. With whatever time is left, Ethan writes for fun & profit, studies for certifications, and enjoys science fiction. @ecbanks
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The post PQ 49 – CloudGenix Application Driven SD-WAN – Sponsored appeared first on Packet Pushers Podcast and was written by Ethan Banks.

Network Break 36

Coffee, virtual donuts and cloudy networking stuff. Whatever that means.

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Greg Ferro

Greg Ferro is a Network Engineer/Architect, mostly focussed on Data Centre, Security Infrastructure, and recently Virtualization. He has over 20 years in IT, in wide range of employers working as a freelance consultant including Finance, Service Providers and Online Companies. He is CCIE#6920 and has a few ideas about the world, but not enough to really count.

He is a host on the Packet Pushers Podcast, blogger at EtherealMind.com and on Twitter @etherealmind and Google Plus.

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The post Network Break 36 appeared first on Packet Pushers Podcast and was written by Greg Ferro.

Video: How waterproof is the Apple Watch?

Ever since the Apple Watch was unveiled back in September, there's been a lot of discussion surrounding how the device might withstand water. In the months leading up to the actual Apple Watch release, there were a few reports indicating that the device was not waterproof, but rather water-resistant. Which is to say, getting a few splashes of water on the device won't ruin it, but it's not something you'd want to go swimming with.Now that the Apple Watch is on store shelves, or available for pre-order to be more exact, the inevitable wave of amateur Apple Watch durability testing has begun. And, as luck would have it, Apple Watch users will be glad to know that their new wearable is much more water-friendly than most initially assumed.To read this article in full or to leave a comment, please click here

How waterproof is the Apple Watch?

Ever since the Apple Watch was unveiled, back in September, there's been a lot of discussion surrounding how the device might withstand water. In the months leading up to the actual Apple Watch release, there were a few reports indicating that the device was not waterproof, but rather water resistant. Which is to say, getting a few splashes of water on the device won't ruin it but it's not something you'd want to go swimming with.Now that the Apple Watch is on store shelves, or available for pre-order to be more exact, the inevitable wave of amateur Apple Watch durability testing has begun. And, as luck would have it, Apple Watch users will be glad to know that their new wearable is much more water friendly than anyone initially assumed.To read this article in full or to leave a comment, please click here

Internet steady in Nepal after earthquake but last-mile connectivity an issue

The Internet is playing an important role in communications in Nepal after a devastating earthquake, as phone links were choked by the large number of people trying to connect.Internet service was disrupted after the earthquake hit near the capital city of Kathmandu on Saturday and cloud services provider Akamai said its traffic to the country saw a steep decline just after 6:00 UTC.Nepal Telecom survived the earthquake while smaller Internet service providers experienced outages, Internet performance monitoring company Dyn said. It had earlier reported that the earthquake had rattled the Internet in the country.To read this article in full or to leave a comment, please click here

Internet steady in Nepal after earthquake but last-mile connectivity an issue

The Internet is playing an important role in communications in Nepal after a devastating earthquake, as phone links were choked by the large number of people trying to connect.Internet service was disrupted after the earthquake hit near the capital city of Kathmandu on Saturday and cloud services provider Akamai said its traffic to the country saw a steep decline just after 6:00 UTC.MORE: Google exec dies on Mt. Everest as result of Nepal quakeTo read this article in full or to leave a comment, please click here

What is a non-blocking switch?

How does Internet work - We know what is networking

It is fairly common to hear about switch being non-blocking. It’s because almost all switches today are non-blocking. But what that means? When I asked people around me on what exactly non-blocking switch means, they were unable to get to the same conclusion. I was going through a lot of different internet places and vendor documents before I wrote this here, but, do not hesitate to add something in comments if you have different view on the subject. Line-rate switch means the same as if you would said wire-speed switch. It basically means that this switch has the forwarding capacity that supports concurrently

What is a non-blocking switch?

Citizens of Tech 001 – Knuckle Cracking Felt Animals

Citizens of Tech is an experimental podcast about technology and other things interesting to techies. We know there's other podcasts in this space, but it's something we really wanted to do, so we thought we'd give it a try.

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Ethan Banks

Co-host at Packet Pushers

Ethan Banks, CCIE #20655, has been managing networks for higher ed, government, financials and high tech since 1995. Ethan co-hosts the Packet Pushers Podcast, which has seen over 3M downloads and reaches over 10K listeners. With whatever time is left, Ethan writes for fun & profit, studies for certifications, and enjoys science fiction. @ecbanks
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The post Citizens of Tech 001 – Knuckle Cracking Felt Animals appeared first on Packet Pushers Podcast and was written by Ethan Banks.

New Magento WAF Rule – RCE Vulnerability Protection

Today the Magento Security Team created a new ModSecurity rule and added it to our WAF rules to mitigate an important RCE (remote code execution) vulnerability in the Magento web e-commerce platform. Any customer using the WAF needs to click the ON button next to the “CloudFlare Magento” Group in the WAF Settings to enable protection immediately.

CloudFlare Magento Rule

Both Magento version 1.9.1.0 CE and 1.14.1.0 EE are compromised by this vulnerability. CloudFlare WAF protection can help mitigate vulnerabilities like this, but it is vital that Magento users patch Magento immediately. Select and download the patch for SUPEE-5344.

Starbucks hit by major computer failure

Starbucks suffered what appears to be a major computer system failure late Friday.Stores in Boston, New York, San Diego and other cities appeared to be affected, judging from hundreds of customer and employee posts on Twitter. Some stores are giving away drinks, are only accepting cash, or have closed, according to the messages.In San Francisco, an employee at one store said they were giving away free drinks, though he did not offer many other details. He said he was not sure when service would be restored.Starbucks did not immediately respond to telephone calls and emails requesting comment.To read this article in full or to leave a comment, please click here

Running vSphere on AWS or GCE

By now you’ve probably seen or heard the news about Ravello Systems launching Inception—the ability to run nested VMware ESXi on AWS or GCE, including the ability to run VMs on these nested ESXi instances. (Here’s Ravello’s press release.)

In my opinion, this is pretty cool, and it opens the door to a lot of different possibilities: upgrade testing, automation testing, new feature testing, hosted home labs (aka “Lab as a Service”). Lots of folks are interested in using this new Ravello functionality for “Lab as a Service.” Here’s Andrea Mauro’s take on this topic.

As part of the pre-launch activities, a number of bloggers and community advocates were able to work with Ravello on some very interesting projects:

  • William Lam built both a 32-node VSAN cluster (running vSphere 5.5) as well as a 64-node VSAN cluster (running vSphere 6.0). He posted details here, along with a great walkthrough of setting up vSphere on Ravello.
  • Mike Preston built out an environment that allowed him to perform a vMotion from AWS to GCE.

I was also engaged with Ravello on a project: building a (reasonably) large-scale vSphere environment on Ravello. The original goal was to Continue reading

iPexpert’s Newest “CCIE Wall of Fame” Adaditions 4/24/2015

Please join us in congratulating the following iPexpert client’s who have passed their CCIE lab!

This Week’s CCIE Success Stories

  • Akash Deep, CCIE #48145 (Data Center)
  • Shraddha Bhaskar, CCIE #48147 (Data Center)
  • Claryeliza Gonzalez, CCIE #21961 (Data Center)

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!

Kubernetes and OpenContrail

I’ve been working over the last couple of weeks in integrating OpenContrail as a networking implementation for Kubernetes and got to the point where i ‘ve a prototype working with a multi-tier application example.

Kubernetes provides 3 basic constructs used in deploying applications:

  • Pod
  • Replication Controller
  • Service

A Pod is a container environment that can execute one or more applications; each Pod executes on a host as one (typically) or more Docker processes sharing the same environment  (including networking). A Replication Controller (RC) is a collection of Pods with the same execution characteristics. RCs ensure that the specified number of replicas are executing for a given Pod template.

Services are collections of Pods that are consumable as a service. Through a single IP end point, typically load-balanced to multiple backends.

Kubernetes comes with several application deployment examples. For the purpose of prototyping, I decided to use the K8PetStore example. It creates a 4-tier example: load-generator, frontend, redis-master and redis-slave. Each of these tiers, except for the redis-master) can be deployed as multiple instances.

With OpenContrail, we decided to create a new daemon that listens to the kubernetes API using the kubernetes controller framework. This daemon creates virtual networks on demand, for each Continue reading

Teardown of Apple Watch shows sensor could measure blood oxygen levels

The Apple Watch's sensor may hold more health monitoring functions than Apple has revealed, including measuring blood oxygen levels, a feature that's not enabled on the device and that Apple hasn't talked about.That's one of the findings from iFixIt, which disassembled an Apple Watch Sport Edition on the day the wearables started shipping to customers.U.S. government regulations may prevent Apple from allowing the watch to capture blood oxygen data, according to iFixIt, whose website lets people offer each other advice on how to fix a variety of things, including computer hardware. The site is also known for breaking apart Apple's new products as soon as they go on sale.To read this article in full or to leave a comment, please click here

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