Real-time visibility and control of campus networks

Many of the examples on this blog describe network visibility driven control of data center networks. However, campus networks face many similar challenges and the availability of industry standard sFlow telemetry and RESTful control APIs in campus switches make it possible to apply feedback control.

HPE Aruba has an extensive selection of campus switches that combine programmatic control via a REST API with hardware sFlow support:
  • Aruba 2530 
  • Aruba 2540 
  • Aruba 2620
  • Aruba 2930F
  • Aruba 2930M
  • Aruba 3810
  • Aruba 5400R
  • Aruba 8400
 This article presents an example of implementing quota controls using HPE Aruba switches.
Typically, a small number of hosts are responsible for the majority of traffic on the network: identifying those hosts, and applying controls to their traffic to prevent them from unfairly dominating, ensures fair access to all users.

Peer-to-peer protocols (P2P) pose some unique challenges:
  • P2P protocols make use of very large numbers of connections in order to quickly transfer data. The large number of connections allows a P2P user to obtain a disproportionate amount of network bandwidth; even a small number of P2P users (less than 0.5% of users) can consume over 90% of the network bandwidth.
  • P2P protocols (and users) are very good Continue reading

The Docker Modernize Traditional Apps (MTA) Program Adds Microsoft Azure Stack

In April of this year, Docker announced the Modernize Traditional Apps (MTA) POC program with partners Avanade, Booz Allen, Cisco, HPE and Microsoft. The MTA program is designed to help IT teams flip the 80% maintenance to 20% innovation ratio on it’s head. The combination of Docker Enterprise Edition (EE), services and infrastructure into a turnkey program delivers portability, security and efficiency for the existing app portfolio to drive down total costs and make room for innovation like cloud strategies and new app development. The program starts by packaging of existing apps into isolated containers, providing the opportunity to migrate them to new on-prem or cloud environments, without any recoding.

 

Docker customers have already been taking advantage of the program to jumpstart their migration to Azure and are experiencing dramatically reduced deployment and scaling times — from weeks to minutes —  and cutting their total costs by 50% or more.

 

The general availability of Microsoft Azure Stack provides IT with the ability to manage their datacenters in the same way they manage Azure. The consistency in hybrid cloud infrastructure deployment combined with consistency in application packaging, deployment and management only further enhance operational efficiency. Docker is pleased Continue reading

History Of Networking – Tony Li – BGP

Tony Li has had a distinguished career working as a networking software architect at some of the largest networking vendors in the world. In this episode of Network Collective, Tony joins us to discuss his involvement in the creation and implementation of BGP, the routing protocol that enables the Internet.

Links, FYI:

BGP Napkin

The image above is a capture of the original BGP design, sketched on two napkins by Kirk Lougheed of Cisco and Yakov Rekhter of IBM in 1989.

RFC 4271 – BGP

Tony Li
Guest
Russ White
Host
Donald Sharp
Host
Eyvonne Sharp
Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Tony Li – BGP appeared first on Network Collective.

History Of Networking – Tony Li – BGP

Tony Li has had a distinguished career working as a networking software architect at some of the largest networking vendors in the world. In this episode of Network Collective, Tony joins us to discuss his involvement in the creation and implementation of BGP, the routing protocol that enables the Internet.

Links, FYI:

BGP Napkin

The image above is a capture of the original BGP design, sketched on two napkins by Kirk Lougheed of Cisco and Yakov Rekhter of IBM in 1989.

RFC 4271 – BGP

Tony Li
Guest
Russ White
Host
Donald Sharp
Host
Eyvonne Sharp
Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Tony Li – BGP appeared first on Network Collective.

Nvidia accelerates the path to AI for IoT, hyperscale data centers

It’s safe to say the Internet of Things (IoT) era has arrived, as we live in a world where things are being connected at pace never seen before. Cars, video cameras, parking meters, building facilities and anything else one can think of are being connected to the internet, generating massive quantities of data.The question is how does one interpret the data and understand what it means? Clearly trying to process this much data manually doesn’t work, which is why most of the web-scale companies have embraced artificial intelligence (AI) as a way to create new services that can leverage the data. This includes speech recognition, natural language processing, real-time translation, predictive services and contextual recommendations. Every major cloud provider and many large enterprises have AI initiatives underway.To read this article in full or to leave a comment, please click here

Nvidia accelerates the path to AI for IoT, hyperscale data centers

It’s safe to say the Internet of Things (IoT) era has arrived, as we live in a world where things are being connected at pace never seen before. Cars, video cameras, parking meters, building facilities and anything else one can think of are being connected to the internet, generating massive quantities of data.The question is how does one interpret the data and understand what it means? Clearly trying to process this much data manually doesn’t work, which is why most of the web-scale companies have embraced artificial intelligence (AI) as a way to create new services that can leverage the data. This includes speech recognition, natural language processing, real-time translation, predictive services and contextual recommendations. Every major cloud provider and many large enterprises have AI initiatives underway.To read this article in full or to leave a comment, please click here

Plans for First Exascale Supercomputer in U.S. Released

This morning a presentation filtered from the Department of Energy’s Office of Science showing the roadmap to exascale with a 2021 machine at Argonne National Lab.

This is the Aurora machine, which had an uncertain future this year when its budgetary and other details were thrown into question. We understood the deal was being restructured and indeed it has. The system was originally slated to appear in 2018 with 180 petaflop potential. Now it is 1000 petaflops, an exascale capable machine, and will be delivered in 2021—right on target with the projected revised plans for exascale released earlier this …

Plans for First Exascale Supercomputer in U.S. Released was written by Nicole Hemsoth at The Next Platform.

Response: Cisco ASA Firewall breaks after 213 days of uptime

Continuing with my theme of paying premium prices for faulty products, Michael McNamara shares a recent experience:  I just recently had two HA pairs of Cisco ASA firewalls just stop communicating. A reboot of both the primary and secondary firewall in each HA pair resolved the problem. I had never observed such odd behavior from […]

The post Response: Cisco ASA Firewall breaks after 213 days of uptime appeared first on EtherealMind.

You Need Configuration Management. Really. (Thwack)

Oops, lost a network device. I sure hope we have a configuration backup…

On the Solarwinds Thwack Geek Speak blog I looked at how configuration management can help not just with total loss scenarios, but also with audit and compliance issue. Please do take a trip to Thwack and check out my post, “You Need Configuration Management. Really“.

You Need Configuration Management. Really.

 

Please see my Disclosures page for more information about my role as a Solarwinds Ambassador.

If you liked this post, please do click through to the source at You Need Configuration Management. Really. (Thwack) and give me a share/like. Thank you!

Bin Packing Problem of Distributed Traffic Engineering

Bin Packing Problem ? What is Bin Packing ? I will explain in this post Bin Packing Problem in MPLS Traffic Engineering.       Very complex post normally but I will make it simple for you. And trust me, it is important to understand.   Before I start explaining Bin Packing problem, let’s just […]

The post Bin Packing Problem of Distributed Traffic Engineering appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

What is IRU ? Indefeasible Right of Use ?

What is IRU (a.k.a Indefeasible Right of Use)  ?  If you are working in the Operator, Service Provider or Telco/Carrier networks, you probably heard this term. If you haven’t, you need to learn it.   Note: This content is received from my Telecom/Service Provider Course. You can join the course and learn much more about […]

The post What is IRU ? Indefeasible Right of Use ? appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

How Cloudflare Streams

Every day, close to 1 billion people watch video through Cloudflare. That’s 100 petabytes of video every month. Last year, video made up 73% of all internet traffic, which is why earlier today we announced Cloudflare Stream, an end to end video solution designed to bring instant video to any device and network connection. Here’s how Stream works to optimize video upload, encoding and delivery.

Uploads

Using Cloudflare Stream starts with a call to the Stream API to /upload a video.

HTTP does not by default provide a reliable upload mechanism for large files, which can make it tricky to upload large media content like high quality video. If there’s any latency in the network connection, a timeout can cancel the entire upload and require the client to start over.

We use an open source upload protocol called Tus which allows for resumable uploads where the upload previously failed. Tus does this by splitting the download into manageable chunks and tracking completed chunks on the server.

Encodes

Video files are containers that hold the video file, the audio track, and some metadata. The video file is compressed by a codec. The codec is a compression algorithm for encoding video Continue reading

Introducing Cloudflare Stream: Fixing the Streaming Video Market



Cloudflare turns seven years old today. We launched on September 27, 2010.

It was only a few days after our launch that we got our first request to support video streaming. Yet, until today, we'd avoided it.

Why? Simply put: the video streaming market is screwed up. While there's a lot of money spent on video, there are only really about 1,000 customers that do any meaningful level of streaming.

This is in large part because it's technically far too complicated. If you want to move beyond just uploading your videos to a consumer service like YouTube, then you have to use at least three different services. You need someone to encode your video into a streamable format, you need someone else to act as the content delivery network delivering the bytes, and you need someone else still to provide the player code that runs on the client device. Further, since video encoding standards keep evolving and vary across generations of devices, it becomes challenging to ensure a consistently high quality experience for all visitors.

And if that sounds like a technical mess, the business side is even worse. Encoding companies charge based on CPU usage, which is driven by Continue reading

Nextcloud’s file storage solution gets a security boost

Nextcloud today released a preview of Nextcloud 13, its online file storage solution for enterprise and individual users.What makes this release so interesting? End-to-end file encryption.When we’re talking about the needs of big businesses, keeping files secure is absolutely critical. There has been no shortage of data breaches and hacks in recent months – reliable encryption and security is absolutely vital to reducing those problems. + Also on Network World: 4 ways to simplify data management + From Jos Poortvliet, member of the Nextcloud, team:To read this article in full or to leave a comment, please click here

Nextcloud’s file storage solution gets a security boost

Nextcloud today released a preview of Nextcloud 13, its online file storage solution for enterprise and individual users.What makes this release so interesting? End-to-end file encryption.When we’re talking about the needs of big businesses, keeping files secure is absolutely critical. There has been no shortage of data breaches and hacks in recent months – reliable encryption and security is absolutely vital to reducing those problems. + Also on Network World: 4 ways to simplify data management + From Jos Poortvliet, member of the Nextcloud, team:To read this article in full or to leave a comment, please click here

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