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Category Archives for "Networking"

The Benefits of Flexible Multi-Cloud and Multi-Region Networking

A report recently published by 451 Research shows that almost 70% of all enterprises will be using a multi-cloud or hybrid IT infrastructure in a year’s time. As more and more enterprises are swayed into the cloud, companies who have already adopted the cloud are now choosing to go with multi-cloud infrastructure or hybrid architecture for their IT requirements.

The report also showcased that about 60% of all workloads are expected to run using a form of hosted cloud service by 2019. This is an increase of about 45% from 2017. This marks an impressive change from DIY owned and operated services to a cloud or third-party hosted IT services. Therefore, the future of IT services is clearly hybrid and multi-cloud.

Here we explore some of the reasons multi-cloud is a fantastic idea for enterprises when they consider security, flexibility, reliability, and cost-effectiveness.

Reduce Security Risks Like a DDoS Attack

A Distributed Denial of Service or DDoS attack is when a number of different computer systems attack a server, website, network resource or a cloud hosting unit. A DDoS attack can be executed by an individual as well as a federal government.

In a scenario that your company’s website is Continue reading

BrandPost: Extending Network Capacity in Enterprise WLANs with 802.11ax

When building networks in the ‘real world’ like city centers, stadiums, apartment buildings, and even office buildings, we frequently come across situations where many access points, installed independently or managed as one network, create overlapping coverage areas. When these access points choose to use the same channel, the performance of all users in such an area is reduced, as the Wi-Fi algorithm used to avoid collisions on the air is quite conservative.One focus of the next Wi-Fi standard, 802.11ax is to improve the performance of ‘real-world’ networks. To this end, the new standard includes a feature enabling more simultaneous transmissions. This feature is known as ‘spatial reuse’ or ‘BSS coloring.’To read this article in full, please click here

The recent right-to-repair smartphone ruling will also affect farm and industrial equipment

Last week, the tech press made a big deal out of a ruling by the Librarian of Congress and the U.S. Copyright Office to allow consumers to break vendors’ digital rights management (DRM) schemes in order to fix their own smartphones and digital voice assistants. According to The Washington Post, for example, the ruling — which goes into effect Oct. 28 — was a big win for consumer right-to-repair advocates. To read this article in full, please click here

Right-to-repair smartphone ruling loosens restrictions on industrial, farm IoT

Last week, the tech press made a big deal out of a ruling by the Librarian of Congress and the U.S. Copyright Office to allow consumers to break vendors’ digital rights management (DRM) schemes in order to fix their own smartphones and digital voice assistants. According to The Washington Post, for example, the ruling — which goes into effect Oct. 28 — was a big win for consumer right-to-repair advocates. To read this article in full, please click here

Right-to-repair smartphone ruling loosens restrictions on industrial, farm IoT

Last week, the tech press made a big deal out of a ruling by the Librarian of Congress and the U.S. Copyright Office to allow consumers to break vendors’ digital rights management (DRM) schemes in order to fix their own smartphones and digital voice assistants. According to The Washington Post, for example, the ruling — which goes into effect Oct. 28 — was a big win for consumer right-to-repair advocates. To read this article in full, please click here

Interview with Juniper Networks Ambassador Pierre-Yves Maunier

In our next Juniper Ambassador interview, I spend time with fellow Juniper Ambassador and French compatriot Pierre-Yves Maunier at the Juniper NXTWORK 2018 conference in Las Vegas. We discuss his life as an Ambassador, his architecture role at Dailymotion, his thoughts on the conference around DevOps and automation, and his family life back home. Pierre’s …

Continue reading "Interview with Juniper Networks Ambassador Pierre-Yves Maunier"

AWS ABCs – Network Building Blocks

Given that my technical background is largely in the networking space (exhibit A, exhibit B, exhibit C(CIE)), one of the first things I tried to wrap my head around when being introduced to AWS is how networking works in the AWS cloud.

What I attempted to do was build a mental model by relating cloud networking constructs such as Virtual Private Cloud (VPC), subnets, and routing tables to on-prem, physical networking constructs. This worked pretty well but I did get tripped up at times because some of these constructs don’t map exactly one-for-one.

This post will explain the mental model I used while also calling attention to the elements or behaviors that don’t map exactly between on-prem and AWS.

The basis for building the model will be a single VM on-prem and a single compute instance in AWS. I’m going to build all the networking constructs around both of these elements, starting from the outer-most layers and working closer and closer to the VM/instance.

Our VM and compute instance need them some networking!

A Note on Layer 2

On the AWS platform there is no explicit building blocks for Layer 2 connectivity. There’s no “elastic virtual Continue reading

Practical OTV

Practical OTV
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This post is all about OTV (Overlay Transport Virtualization) on the CSR1000v.
I wanted to create the post because there are alot of acronyms and terminology involved.

A secondary objective was to have a “real” multicast network in the middle, as the examples I have seen around the web, have used a direct P2P network for the DCI.
Instead, I wanted to have full multicast running in the SP core in order to gain a full understanding of the packet forwarding and encapsulation.

First off, lets talk about the topology I will be using:

Datacenters:
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We have 2 Datacenters, one represented by Site 1 and the other by Site 2.
In the middle, we have what is in all respects a SP provider network. In your environment, this may or may not be your own transport network.

In site 1, CSR-1 is our “server”, basically all thats configured on it is an IP address (192.168.100.1/24) on its G1 interface.
SW-9 is our L2 switch, which is configured with 2 VLAN’s (Vlan 100 (SERVER-VLAN) and Vlan 900 (SITE-VLAN)). The port (e0/0) going to CSR-1 is configured as an access-port in Vlan 100.

The ports Continue reading

Rough Guide to IETF 103: Internet of Things

Not surprisingly it has been a busy 4 months in IoT, and IoT-related work in IETF has been buzzing right along. This post is intended to highlight some of these activities, and to provide a guide to relevant sessions scheduled during the upcoming IETF 103 meeting in Bangkok. Also check out the IETF Journal IoT Category, the IETF IoT page, the IETF IoT Directorate, the Internet Society’s IoT page, or the Online Trust Alliance IoT page for more details about many of these topics.

The IETF Hackathon, held on the weekend preceding the main IETF meeting (November 3-4, 2018), includes several projects directly related to IoT, with the possibility of more being added. Remote participation is available. More information is on the Hackathon wiki. Projects of interest (at the time of this writing) include those relating to:

  • LPWAN CoAP/UDP/IPv6 SCHC compression and fragmentation
  • ST-COAPS (ACE WG) + ANIMA BRSK
  • WISHI (Work on IoT Semantic / Hypermedia Interoperability
  • Trusted Execution Environment Provisioning (TEEP)

The Thing-to-Thing Research Group (T2TRG), under the Internet Research Task Force (IRTF), investigates open research issues towards turning the promise of IoT into reality. The research group will be meeting on Tuesday afternoon Continue reading

It’s All About Business…

A few years ago I got cornered by an enthusiastic academic praising the beauties of his cryptography-based system that would (after replacing the whole Internet) solve all the supposed woes we’re facing with BGP today.

His ideas were technically sound, but probably won’t ever see widespread adoption – it doesn’t matter if you have great ideas if there’s not enough motivation to implementing them (The Myths of Innovation is a mandatory reading if you’re interested in these topics).

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Accelerated Data Plane Performance Using Enhanced Data Path in NUMA Architecture

Authors: Jambi Ganbar (Sr. Technical Solutions Manager, NFV), Jubin Thomas (NSX Information Experience team)

Overview

Some workloads demand accelerated and predictable networking performance.  Our Network Functions Virtualization (NFV) customers and some of our financial, media, and high-performance computing (HPC) customers deploy these workloads. These workloads process a lot of network traffic. Network traffic in the virtual domain relies heavily on CPU cycles and the number of CPU cores available on the host.  These CPU resources are used by the workload to perform its task and by the hypervisor layer to deliver network traffic to and from the application.

In this blog, we discuss the configuration required to achieve accelerated data plane performance in modern multiple NUMA architecture hosts. This blog accompanies a new white paper we just released on the subject.  The white paper can be found here.

With the introduction of NSX-T version 2.2, we added a new mode of operations in the NSX-controlled virtual distributed switch. We refer to this switch as N-VDS.  This new mode is called Enhanced Data Path and is often indicated as N-VDS (E).  N-VDS (E) is one of the core building blocks in achieving accelerated data plane Continue reading

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