Heavy Networking 533: Packet Pushers Roundtable – SD-Branch, BGP Over QUIC, Bandwidth Avoidance

Today's episode assembles the Packet Pushers to wrangle over a grab bag of ideas including the evolution from SD-WAN to SD-Branch, new compression standards to preserve Internet bandwidth, and the pros and cons of BGP over QUIC.

The post Heavy Networking 533: Packet Pushers Roundtable – SD-Branch, BGP Over QUIC, Bandwidth Avoidance appeared first on Packet Pushers.

Microsoft uses AI to boost its reuse, recycling of server parts

Microsoft is bringing artificial intelligence to the task of sorting through millions of servers to determine what can be recycled and where.The new initiative calls for the building of so-called Circular Centers at Microsoft data centers around the world, where AI algorithms will be used to sort through parts from decommissioned servers or other hardware and figure out which parts can be reused on the campus. READ MORE: How to decommission a data center Microsoft says it has more than three million servers and related hardware in its data centers, and that a server's average lifespan is about five years. Plus, Microsoft is expanding globally, so its server numbers should increase.To read this article in full, please click here

Microsoft uses AI to boost its reuse, recycling of server parts

Microsoft is bringing artificial intelligence to the task of sorting through millions of servers to determine what can be recycled and where.The new initiative calls for the building of so-called Circular Centers at Microsoft data centers around the world, where AI algorithms will be used to sort through parts from decommissioned servers or other hardware and figure out which parts can be reused on the campus. READ MORE: How to decommission a data center Microsoft says it has more than three million servers and related hardware in its data centers, and that a server's average lifespan is about five years. Plus, Microsoft is expanding globally, so its server numbers should increase.To read this article in full, please click here

Protecting Remote Desktops at Scale with Cloudflare Access

Protecting Remote Desktops at Scale with Cloudflare Access

Early last year, before any of us knew that so many people would be working remotely in 2020, we announced that Cloudflare Access, Cloudflare’s Zero Trust authentication solution, would begin protecting the Remote Desktop Protocol (RDP). To protect RDP, customers would deploy Argo Tunnel to create an encrypted connection between their RDP server and our edge - effectively locking down RDP resources from the public Internet. Once locked down with Tunnel, customers could use Cloudflare Access to create identity-driven rules enforcing who could login to their resources.

Setting Tunnel up initially required installing the Cloudflare daemon, cloudflared, on each RDP server. However, as the adoption of remote work increased we learned that installing and provisioning a new daemon on every server in a network was a tall order for customers managing large fleets of servers.

What should have been a simple, elegant VPN replacement became a deployment headache. As organizations helped tens of thousands of users switch to remote work, no one had the bandwidth to deploy tens of thousands of daemons.

Message received: today we are announcing Argo Tunnel RDP Bastion mode, a simpler way to protect RDP connections at scale. ? By functioning as a Continue reading

MUST READ: IPv4, IPv6, and a Sudden Change in Attitude

Avery Pennarun continued his if only IPv6 would be less academic saga with a must-read IPv4, IPv6, and a sudden change in attitude article in which he (among other things) correctly identified IPv6 as a typical example of second-system effect:

If we were feeling snarky, we could perhaps describe IPv6 as “the String Theory of networking”: a decades-long boondoggle that attracts True Believers, gets you flamed intensely if you question the doctrine, and which is notable mainly for how much progress it has held back.

In the end, his conclusion matches what I said a decade ago: if only the designers of the original Internet wouldn’t be too stubborn to admit a networking stack needs a session layer. For more details, watch The Importance of Network Layers part of Networks Really Work webinar

Enabling Microsegmentation with Calico Enterprise

Microsegmentation is a security technique that is used to isolate workloads from one another. Microsegmentation limits the blast radius of a data breach by making network security more granular. Should a breach occur, the damage is confined to the affected segment.  Application workloads have evolved over time – starting from bare metal, to a mix of on-prem and cloud virtual machines and containers. Similarly, the pace of change has dramatically increased, both in terms of release updates and auto-scaling.

Enforcement of network security has also evolved over time, with organizations using a mix of physical/virtual firewalls and platform-specific security groups to manage network security. This creates the following challenges:

  1. Management Overhead – Organizations have to maintain different products, teams and workflows to manage and operate segmentation across containers, VMs and bare metal. The diagram above shows how different platforms may require different approaches to segmentation, thereby creating a burden on the operations team.
  2. Lack of Cloud-Native Performance – With hybrid cloud becoming a norm, products built for traditional workloads can neither scale nor enforce security for cloud-native deployments with minimal latency.

Calico Enterprise provides a common policy language for segmentation that works across all of your hybrid cloud and Continue reading

Cisco Viptela SD-WAN Training

Cisco Viptela SD-WAN Training. I recently added Self Paced Cisco Viptela SD-WAN training under Training on the website. You can purchase it and start studying the course right away.

This course covers all SD-WAN  concepts from basic to advance level.

Not only many hours theory and design, but there are more than 12 hours Lab/Configuration in this course to demonstrate, different features in SD-WAN.

Students of this course are placed in a study group, so when they have any problem, we support them in the group. This is key for learning and I follow the same methodology in all my trainings.

It covers at the moment, Cisco Viptela SD-WAN but when the new content is available for the other vendors SD-WAN solution, students will be able to access the new content for free as well.

Starting from installing certificates on the SD-WAN Controller (VBond, VSmart, VManage), all the way cloud integration, Direct Internet Access, Dynamic Path Selection, Application Based Traffic Engineering, QoS, Forward Error Correction, Deduplication, Zero Touch Provisioning and many other topics are covered from theory and design aspects and demonstrated in a Lab environment.

Last but not least, guest designers will discuss their real life SD-WAN design and Continue reading

100+ Hours CCIE Enterprise Infrastructure Training/Bootcamp

100+ hours CCIE Enterprise Infrastructure Training/Bootcamp. Can it happen? Yes, in fact my CCIE Enterprise Instructor Led course is over 100 hours, design , theory and lab content.

 

In the CCIE Enterprise training I go through not only traditional technologies such as OSPF, EIGRP , BGP , MPLS, Multicast, QoS, IPv6 etc. but also there are so many SD-WAN , SD-Access and Network Programmability and Automation content.

Probably you have seen some topologies on social media (I use LinkedIn mostly), those topologies consists of many tasks and we cover all of them in the training.

 

I have two versions of CCIE Enterprise Training.

 

     1.Self Paced CCIE Enterprise Infrastructure Training:

 

In this training, all the content of CCIE Instructor Led training is covered but as a recorded video format. Participant of Self Paced CCIE Enterprise Training gets not only videos but also Config files/Labs , workbooks, design comparison charts (don’t forget there is 3 hours design module in CCIE Enterprise exam), session materials and so on. Self Paced training students are placed in a study group together with the Instructor Led CCIE Enterprise training/bootcamp students.

 

    2. Instructor Led CCIE Enterprise Infrastructure Continue reading

Federated learning improves how AI data is managed, thwarts data leakage

Privacy is one of the big holdups to a world of ubiquitous, seamless data-sharing for artificial intelligence-driven learning. In an ideal world, massive quantities of data, such as medical imaging scans, could be shared openly across the globe so that machine learning algorithms can gain experience from a broad range of data sets. The more data shared, the better the outcomes.That generally doesn't happen now, including in the medical world, where privacy is paramount. For the most part, medical image scans, such as brain MRIs, stay at the institution level for analysis. The result is then shared, but not the original patient scan data. READ MORE: Cisco challenge winners use AI, IoT to tackle global problemsTo read this article in full, please click here

Federated learning improves how AI data is managed, thwarts data leakage

Privacy is one of the big holdups to a world of ubiquitous, seamless data-sharing for artificial intelligence-driven learning. In an ideal world, massive quantities of data, such as medical imaging scans, could be shared openly across the globe so that machine learning algorithms can gain experience from a broad range of data sets. The more data shared, the better the outcomes.That generally doesn't happen now, including in the medical world, where privacy is paramount. For the most part, medical image scans, such as brain MRIs, stay at the institution level for analysis. The result is then shared, but not the original patient scan data. READ MORE: Cisco challenge winners use AI, IoT to tackle global problemsTo read this article in full, please click here

Everything You Need to Know about Network Time Security

This article was first published on NetNod’s Blog. It is reposted here with permission of the author.

A lot of the Internet’s most important security tools are dependent on accurate time. But until recently there was no way to ensure that the time you were getting came from a trusted source. The new Network Time Security (NTS) standard has been designed to fix that. In this post, we will summarise the most important NTS developments and link to a range of recent Netnod articles providing more information on the background, the NTS standard and the latest implementations.

What is NTS and why is it important?

NTS is an essential development of the Network Time Protocol (NTP). It has been developed within the Internet Engineering Task Force (IETF) and adds a much needed layer of security to a protocol that is more than 30 years old and is vulnerable to certain types of attack. Netnod has played an important role in the development of Network Time Security (NTS) from the standardization effort in the IETF to the development of several implementations and the launch of one of the first NTS-enabled NTP services in the world.

NTS consists of two protocols, Continue reading

BGP Convergence and ASn allocation design in Large Scale Networks

BGP Convergence and ASn allocation design in Large Scale Networks covered in this post and the video at the end of the post.

This content is explained in great detail in my BGP Zero to Hero course as well as CCIE Enterprise Training.

 

BGP is always known as slowly converged protocol. In fact this is wrong knowledge. If you just mention about BGP Control plane convergence, can be true but we always ignore BGP Data Plane Convergence which is commonly known as BGP PIC (Prefix Independent Convergence) 

 

In this post, I will explain the BGP Path Hunting process which slows down the convergence process. Path Hunting is not only BGP but in general distance vector protocols convergence problem.

 

Effect of Path Hunting gets very problematic in densely meshed topologies such as CLOS or Fat Tree.

 

Many Leaf and Spine switches might be in the network and when EBGP is used (As it is recommended in RFC 7938) Path Hunting should be avoided by allocation the Autonomous System number to the networking devices wisely.

 

Otherwise, for the prefix which is not anymore advertised to network due to failure for example, BGP speaking routers try any Continue reading

Many data-center workloads staying on premises, Uptime Institute finds

Another study finds that the data center is far from dying. That's not surprising to learn from the Uptime Institute's annual data center survey. However one trend that did stand out in the research is that power efficiency has "flatlined" in recent years.Uptime says big improvements in energy efficiency were achieved between 2007 and 2013 using mostly inexpensive or easy methods, such as simple air containment. But moving beyond those gains involves more difficult or expensive changes. Since 2013, improvements in power usage effectiveness (PUE) have been marginal, according to the group.To read this article in full, please click here

Many data-center workloads staying on premises, Uptime Institute finds

Another study finds that the data center is far from dying. That's not surprising to learn from the Uptime Institute's annual data center survey. However one trend that did stand out in the research is that power efficiency has "flatlined" in recent years.Uptime says big improvements in energy efficiency were achieved between 2007 and 2013 using mostly inexpensive or easy methods, such as simple air containment. But moving beyond those gains involves more difficult or expensive changes. Since 2013, improvements in power usage effectiveness (PUE) have been marginal, according to the group.To read this article in full, please click here

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