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Category Archives for "Networking"

On the ‘net: Openness and Composable Systems

Openness, it seems, is “in the air.” While the Liqid folks were over at OCP, I was over at the Open Networking Summit (ONS), where I (primarily) attended the Linux Foundation (Networking), or LF(N), board meeting. What was interesting at this year’s summit is just how little the focus of open network is on bare metal routers and switches, and how much of the focus is on server-based and overlay networking. @GestaltIT

IDG Contributor Network: Bringing your Internet of Things infrastructure into the digital age

When Campofrio Food Group’s 17-year-old factory in Burgos, Spain, famously burned to the ground, the multinational meat processor turned tragedy into opportunity. With an eye on digital transformation, Campofrio rebuilt the facility as a connected factory, powered by the Internet of Things (IoT). This allowed the state-of-the-art, greenfield meat packing plant to automate processes and provide real-time data on materials, equipment and workers to uncover new business value.Such “blank canvas” opportunities to bring a factory into the digital age from the ground up don’t happen very often. Most IoT projects are implemented in existing, brownfield environments with traditional legacy systems, requiring an incremental approach. The goal of these gradual integrations has been to optimize or automate processes, gain some efficiencies, and move onto the next low-hanging fruit. But, this approach will not work if businesses want to capture IoT’s true transformational value: the creation of new business models, new revenue streams, new products and new markets.To read this article in full, please click here

ONOS measurement based control

ONOS traffic analytics describes how to run the ONOS SDN controller with a virtual network created using Mininet. The article also showed how to monitor network traffic using industry standard sFlow instrumentation available in Mininet and in physical switches.
This article uses the same ONOS / Mininet test bed to demonstrate how sFlow-RT real-time flow analytics can be used to push controls to the network through the ONOS REST API.  Leaf and spine traffic engineering using segment routing and SDN used real-time flow analytics to load balance an ONOS controlled physical network. In this example, we will use ONOS to filter DDoS attack traffic on a Mininet virtual network.

The following sFlow-RT script, ddos.js, detects DDoS attacks and programs ONOS filter rules to block the attacks:
var user = 'onos';
var password = 'rocks';
var onos = '192.168.123.1';
var controls = {};

setFlow('udp_reflection',
 {keys:'ipdestination,udpsourceport',value:'frames'});
setThreshold('udp_reflection_attack',
 {metric:'udp_reflection',value:100,byFlow:true,timeout:2});

setEventHandler(function(evt) {
 // don't consider inter-switch links
 var link = topologyInterfaceToLink(evt.agent,evt.dataSource);
 if(link) return;

 // get port information
 var port = topologyInterfaceToPort(evt.agent,evt.dataSource);
 if(!port) return;

 // need OpenFlow info to create ONOS filtering rule
 if(!port.dpid || !port.ofport) return;

 // we already have  Continue reading

Network-as-a-Service: A modern solution to today’s networking challenges

Traditional networking architectures over the past two decades or so prescribe that the hub of the network be build around a specific location, such as a data center or a company’s headquarters building. This location houses most of the equipment for compute, storage, communications, and security, and this is where enterprise applications are traditionally hosted. For people in branch and other remote locations, traffic is typically backhauled to this hub before going out to other locations, including to the cloud.Though that formula has been standard operating procedure for many years, it doesn’t fit the way of work for many enterprises today. For one thing, there has been a major migration to the cloud. Those enterprise applications that run the business are now hosted in cloud platforms such as Amazon Web Services or Microsoft Azure, either as private applications or as SaaS apps such as Office 365 and Salesforce. In fact, companies often use multiple cloud platforms these days.To read this article in full, please click here

Network-as-a-Service: A modern solution to today’s networking challenges

Traditional networking architectures over the past two decades or so prescribe that the hub of the network be build around a specific location, such as a data center or a company’s headquarters building. This location houses most of the equipment for compute, storage, communications, and security, and this is where enterprise applications are traditionally hosted. For people in branch and other remote locations, traffic is typically backhauled to this hub before going out to other locations, including to the cloud.Though that formula has been standard operating procedure for many years, it doesn’t fit the way of work for many enterprises today. For one thing, there has been a major migration to the cloud. Those enterprise applications that run the business are now hosted in cloud platforms such as Amazon Web Services or Microsoft Azure, either as private applications or as SaaS apps such as Office 365 and Salesforce. In fact, companies often use multiple cloud platforms these days.To read this article in full, please click here

Network-as-a-Service: A modern solution to today’s networking challenges

Traditional networking architectures over the past two decades or so prescribe that the hub of the network be build around a specific location, such as a data center or a company’s headquarters building. This location houses most of the equipment for compute, storage, communications, and security, and this is where enterprise applications are traditionally hosted. For people in branch and other remote locations, traffic is typically backhauled to this hub before going out to other locations, including to the cloud.Though that formula has been standard operating procedure for many years, it doesn’t fit the way of work for many enterprises today. For one thing, there has been a major migration to the cloud. Those enterprise applications that run the business are now hosted in cloud platforms such as Amazon Web Services or Microsoft Azure, either as private applications or as SaaS apps such as Office 365 and Salesforce. In fact, companies often use multiple cloud platforms these days.To read this article in full, please click here

ACE Submarine Cable Cut Impacts Ten Countries

The ACE (African Coast to Europe) submarine cable runs along the west coast of Africa between France and South Africa, connecting 22 countries. It extends over 17,000 km, and has a potential capacity of 5.12 Tbps. The cable system is managed by a consortium of 19 telecommunications operators & administrations, and the first phase entered service in December 2012. While it may not have been completely problem-free over the last 5+ years, online searches do not return any published reports of significant outages caused by damage to the cable.

However, on March 30, damage to the cable disrupted Internet connectivity to a number of connected countries, with reported problems posted to social media over the next several days. These posts indicated that the ACE submarine cable was cut near Noukachott, Mauritania, but did not provide any specific information about what severed the cable.

Of the 22 countries listed as having landing points for the ACE Submarine Cable, 10 had significant disruptions evident in Oracle’s Continue reading

Integrating the configuration build – Next steps

Hi,

The last post link below, I got introduced to a CI System and basics of it.

https://r2079.wordpress.com/2018/04/03/using-travis-ci-continuous-
integration-with-github/

This post goes further in actually using the CI system.

All the code is hosted here

https://github.com/yukthr/auts.git

-> Requirement is very simple

This is a very basic program which introduces anyone to Jinja2 and
 yaml syntaxing 


Problem  - Have two interfaces ge-0/0/0 and ge-0/0/1, we have to use 
Yaml / Jinja2 and Pyez to develop the configurational 
syntax for this and later on a CI system need to validate the build. 

The code hosted in Github above.
intf.yml    - will have all the interfaces 
template.j2 - will have the appropriate Jinja2 
template.py - will have the python program combining these two

So, we write the code 





Finally build the CI file, but here we also buld the dependencies 
because when CI starts to validate it needs to have all the 
appropriate software installed. It amuses me to the point, 
it spins up the VM and then install the dependencies and then

it validates our code. I have come a long way from manual 
verificaitons / lab testing / CI testing now




This is how  Continue reading

IDG Contributor Network: What Larry, Moe and Curly can teach us about network security and SD-WAN agility

In comedy, unexpected actions make for good fun. The pratfalls. The eye pokes. But in networking, the unexpected is hardly funny. And yet it was the antics of the Three Stooges that came to mind as I reviewed the results of Cato Networks’ latest networking survey.The survey canvassed more than 700 enterprise IT buyers from around the globe about the drivers and challenges facing their networking and security deployments. What we observed serves as a promise and warning for anyone considering SD-WAN.SD-WAN is supposed to be the answer to network complexity. And like any good slapstick setup, we can almost see how SD-WAN meets that objective. As an overlay aggregating traffic from MPLS, broadband and any other underlying data transport, SD-WAN hides the complexity of a building a network from multiple data transports. Policies provide the intelligence for SD-WAN to select the optimum network for each application freeing IT from making those calculations and changes manually, if that was even possible.To read this article in full, please click here

IDG Contributor Network: What Larry, Moe and Curly can teach us about network security and SD-WAN agility

In comedy, unexpected actions make for good fun. The pratfalls. The eye pokes. But in networking, the unexpected is hardly funny. And yet it was the antics of the Three Stooges that came to mind as I reviewed the results of Cato Networks’ latest networking survey.The survey canvassed more than 700 enterprise IT buyers from around the globe about the drivers and challenges facing their networking and security deployments. What we observed serves as a promise and warning for anyone considering SD-WAN.SD-WAN is supposed to be the answer to network complexity. And like any good slapstick setup, we can almost see how SD-WAN meets that objective. As an overlay aggregating traffic from MPLS, broadband and any other underlying data transport, SD-WAN hides the complexity of a building a network from multiple data transports. Policies provide the intelligence for SD-WAN to select the optimum network for each application freeing IT from making those calculations and changes manually, if that was even possible.To read this article in full, please click here

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