Deutsche Telekom Invests in SD-WAN Vendor Aryaka
Aryaka raises $45 million in a Series D round.
Cuba Up, Vietnam Down: Recent Subsea Cable Developments
Recent submarine cable-related developments have impacted internet connectivity in locales as diverse as Vietnam, Cuba, India, the Marshall Islands and Russia’s Kamchatka Peninsula. In this blog post, we report on positive developments in Cuba and Russia and a few notable cable failures in other parts of the world.
Vietnam
The internet of Vietnam got off to a shaky start in 2017 when, on 8 January, the America-Asia Gateway (AAG) submarine cable experienced yet another of its many failures. In September of last year, Tuoi Tre News reported that AAG had suffered its 10th failure in three years, prompting VietnamNet to ask the question: Why does the AAG underwater cable have to be repaired so often? Over the years, we have frequently analyzed these cable breaks. (For example, see this, this or this.)
Internet performance in Ho Chi Minh City suffers greatly during these unfortunate episodes. For Saigontourist Cable Television (SCTV), the recent break meant a brief disruption in connectivity and the loss of NTT transit as illustrated below.
Master-Master Replication and Scaling of an Application between Each of the IoT Devices and the Cloud
In this article, I want to share with you how I solved a very interesting problem of synchronizing data between IoT devices and a cloud application.
I’ll start by outlining the general idea and the goals of my project. Then I’ll describe my implementation in greater detail. This is going to be a more technically advanced part, where I’ll be talking about the Contiki OS, databases, protocols and the like. In the end, I’ll summarize the technologies I used to implement the whole system.
Project overview
So, let’s talk about the general idea first.
Here’s a scheme illustrating the final state of the whole system:
I have a user who can connect to IoT devices via a cloud service or directly (that is over Wi-Fi).
Also, I have an application server somewhere in the cloud and the cloud itself somewhere on the Internet. This cloud can be anything — for example, an AWS or Azure instance or it could be a dedicated server, it could be anything :)
The application server is connected to IoT devices over some protocol. I need this connection to exchange data between the application server and the IoT devices.
The IoT devices are connected to each other in Continue reading
Network Break 119: A Brocade Buyer?; HPE Snags SimpliVity
Todays Network Break episode explores a possible buyer for Brocades IP business, analyzes HPEs SimpliVity purchase, reviews new switch silicon and more. The post Network Break 119: A Brocade Buyer?; HPE Snags SimpliVity appeared first on Packet Pushers.Telegraf, InfluxDB, Chronograf, and Kapacitor
The following telegraf.js script instructs sFlow-RT to periodically export host metrics to InfluxDB:
var influxdb = "http://10.0.0.56:8086/write?db=telegraf";
function sendToInfluxDB(msg) {
if(!msg || !msg.length) return;
var req = {
url:influxdb,
operation:'POST',
headers:{"Content-Type":"text/plain"},
body:msg.join('\n')
};
req.error = function(e) {
logWarning('InfluxDB POST failed, error=' + e);
}
try { httpAsync(req); }
catch(e) {
logWarning('bad request ' + req.url + ' ' + e);
}
}
var metric_names = [
Continue reading
Beyond the Net Funding Programmes – Call for Applications
We are happy to announce that Applications for Beyond the Net Medium and Large grants are open until Thursday, 23 March 2017.
Beyond the Net seeks to improve the quality of people’s lives in all parts of the world by providing them meaningful access to an open, trusted and global Internet.
Do you have a project that can promote the development of your community, but you don’t have the economic resources to implement it?
Beyond the Net provides funding up to $30,000 USD for one or two years’ projects.
Projects must focus in one or more of the following categories:
Ilda Simao