Coronavirus No Match for Oracle’s Larry Ellison
While other tech companies have blamed COVID-19 for recent revenue declines, citing supply chain...
© SDxCentral, LLC. Use of this feed is limited to personal, non-commercial use and is governed by SDxCentral's Terms of Use (https://www.sdxcentral.com/legal/terms-of-service/). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.
COVID-19 impacts on Internet traffic: Seattle, Northern Italy and South Korea
The last few weeks have seen unprecedented changes in how people live and work around the world. Over time more and more companies have given their employees the right to work from home, restricted business travel and, in some cases, outright sent their entire workforce home. In some countries, quarantines are in place keeping people restricted to their homes.
These changes in daily life are showing up as changes in patterns of Internet use around the world. In this blog post I take a look at changing patterns in northern Italy, South Korea and the Seattle area of Washington state.
Seattle
To understand how Internet use is changing, it’s first helpful to start with what a normal pattern looks like. Here’s a chart of traffic from our Dallas point of presence in the middle of January 2020.
This is a pretty typical pattern. If you look carefully you can see that Internet use is down a little at the weekend and that Internet usage is diurnal: Internet use drops down during the night and then picks up again in the morning. The peaks occur at around 2100 local time and the troughs in the dead of night at around 0300. Continue reading
SDxCentral Remains Open During Coronavirus Outbreak
The COVID-19 outbreak has upended our world, but know that we here at SDxCentral will remain...
© SDxCentral, LLC. Use of this feed is limited to personal, non-commercial use and is governed by SDxCentral's Terms of Use (https://www.sdxcentral.com/legal/terms-of-service/). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.
Cumulus content roundup: February 2020
Are you looking for a break from the general news? Our content round-ups are a great source for all the recent blogs (and more!) that we’ve shared. From podcasts, to product updates, to industry thought leadership and even customer examples of how they’re implementing open networking technology— we’ve got it all here for you.
Dive into the content below and update yourself on what’s been happening. It may just be that needed break from the rest of the news that you were looking for.
From Cumulus Networks:
VXLAN/EVPN vs VRF Lite: In this blog Rama Darbha, Senior Consulting Engineer at Cumulus Networks, talks through the difference between VXLAN with EVPN and VRFLite and offers up his conclusion as to which solution is better.
Kernel of Truth season 3 episode 1: FRRouting update: Season three jumps right into the deep end of the pool with a discussion on FRRouting. Listen as hosts Brian O’Sullivan & Roopa Prabhu chat about what’s new with the FRR community with a new guest to the podcast, FRR expert Donald Sharp.
Topology matters: how port-per-workload management strategies no longer hold up: A new way of looking at switching—as a logical, rather Continue reading
Weekly Wrap: Telia Taps Cisco Viptela SD-WAN
SDxCentral Weekly Wrap for March 13, 2020: The Sweden-based vendor cited Viptela's remote...
© SDxCentral, LLC. Use of this feed is limited to personal, non-commercial use and is governed by SDxCentral's Terms of Use (https://www.sdxcentral.com/legal/terms-of-service/). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.
Cloudflare’s COVID-19 FAQs
As the status of COVID-19 continues to impact people and businesses around the world, Cloudflare is committed to providing awareness and transparency to our customers, employees, and partners about how we are responding. We do not anticipate any significant disruptions in Cloudflare services.
Our Business Continuity Team is monitoring the situation closely and all company personnel are kept up to date via multiple internal communication channels including a live chat room. Customers and the public are encouraged to visit this blog post for the latest information.
You can check the status of our network at www.cloudflarestatus.com. For COVID-19-related questions that aren’t answered below, please contact our Customer Support Team.
Does Cloudflare have a Business Continuity Team (BCT)?
Yes, Cloudflare’s Business Continuity Team is a cross-functional, geographically diverse group dedicated to navigating through a health crisis like COVID-19 as well as a variety of other scenarios that may impact employee safety and business continuity.
What is Cloudflare’s Business Continuity Plan in the light of COVID-19?
In addition to Cloudflare’s existing Disaster Recovery Plan we have implemented the following strategies:
- Daily Business Continuity Team meetings to determine if updates, changes, or communication need to be provided to customers, partners, and Continue reading
Seamless Suffering
This story is about the importance of remembering networking fundamentals when dealing with advanced routing topics.
Overview of Seamless MPLS
Seamless MPLS is a really neat design for large ISP networks. The idea is to overcome the scalability limitations of …
Video: Bandwidth Is Neither Infinite Nor Cheap
After decades of riding the Moore’s law curve the networking bandwidth should be (almost) infinite and (almost) free, right? WRONG, as I explained in the Bandwidth Is (Not) Infinite and Free video (part of How Networks Really Work webinar).
There are still pockets of Internet desert where mobile- or residential users have to deal with traffic caps, and if you decide to move your applications into any public cloud you better check how much bandwidth those applications consume or you’ll be the next victim of the Great Bandwidth Swindle. For more details, watch the video.
You need Free ipSpace.net Subscription to watch the video, and the Standard ipSpace.net Subscription to register for upcoming live sessions.
Video: Bandwidth Is Neither Infinite Nor Cheap
After decades of riding the Moore’s law curve the networking bandwidth should be (almost) infinite and (almost) free, right? WRONG, as I explained in the Bandwidth Is (Not) Infinite and Free video (part of How Networks Really Work webinar).
There are still pockets of Internet desert where mobile- or residential users have to deal with traffic caps, and if you decide to move your applications into any public cloud you better check how much bandwidth those applications consume or you’ll be the next victim of the Great Bandwidth Swindle. For more details, watch the video.
You need Free ipSpace.net Subscription to watch the video, and the Standard ipSpace.net Subscription to register for upcoming live sessions.
Revocation
Public key cryptography is the mainstay of Internet security. It relies on all of us being able to keep our private key a secret. And if it all goes wrong, well we can always get our public key certificate revoked and start again with a new key pair. But what if revocation doesn't work?Cloudflare During the Coronavirus Emergency
This email was sent to all Cloudflare customers a short while ago
From: Matthew Prince
Date: Thu, Mar 12, 2020 at 4:20 PM
Subject: Cloudflare During the Coronavirus Emergency
We know that organizations and individuals around the world depend on Cloudflare and our network. I wanted to send you a personal note to let you know how Cloudflare is dealing with the Coronavirus emergency.
First, the health and safety of our employees and customers is our top priority. We have implemented a number of sensible policies to this end, including encouraging many employees to work from home. This, however, hasn't slowed our operations. Our network operations center (NOC), security operations center (SOC), and customer support teams will remain fully operational and can do their jobs entirely remote as needed.
Second, we are tracking Internet usage patterns globally. As more people work from home, peak traffic in impacted regions has increased, on average, approximately 10%. In Italy, which has imposed a nationwide quarantine, peak Internet traffic is up 30%. Traffic patterns have also shifted so peak traffic is occurring earlier in the day in impacted regions. None of these traffic changes raise any concern for us. Cloudflare's network is well provisioned Continue reading
Daily Roundup: AT&T Touts 5G Lead
AT&T peddled its 5G lead; AWS launched Bottlerocket Container OS; and Splunk made security...
© SDxCentral, LLC. Use of this feed is limited to personal, non-commercial use and is governed by SDxCentral's Terms of Use (https://www.sdxcentral.com/legal/terms-of-service/). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.
Mellanox New Switch ASIC Targets Broadcom; Intel Ties Silicon Photonics to Switch
Broadcom's Tomahawk, Trident 3, and Jericho platforms are in the crosshairs of Mellanox's new...
© SDxCentral, LLC. Use of this feed is limited to personal, non-commercial use and is governed by SDxCentral's Terms of Use (https://www.sdxcentral.com/legal/terms-of-service/). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.
AT&T Trumpets ‘Significant’ 5G Network Lead
“We believe we're going to have the best, deepest coverage on the 5G perspective than any of our...
© SDxCentral, LLC. Use of this feed is limited to personal, non-commercial use and is governed by SDxCentral's Terms of Use (https://www.sdxcentral.com/legal/terms-of-service/). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.
Ubuntu 18.04
Find the latest Host sFlow version on the Host sFlow download page.
wget https://github.com/sflow/host-sflow/releases/download/v2.0.25-3/hsflowd-ubuntu18_2.0.25-3_amd64.debThe above commands download and install the software.
sudo dpkg -i hsflowd-ubuntu18_2.0.25-3_amd64.deb
sudo systemctl enable hsflowd
sflow {
collector { ip=10.0.0.30 }
pcap { speed=1G-1T }
tcp { }
systemd { }
}Edit the /etc/hsflowd.conf file. The above example sends sFlow to a collector at 10.0.0.30, enables packet sampling on all network adapters, adds TCP performance information, and exports metrics for Linux services. See Configuring Host sFlow for Linux for the complete set of configuration options.sudo systemctl restart hsflowdRestart the Host sFlow daemon to start streaming telemetry to Continue reading
Intra-Subnet Communication: AWS VPC versus LISP Based Campus Fabric
Forewords
This article introduces the principles of the Amazon Web Service Virtual Private Cloud (AWS VPC) Control-Plane operation and Data-Plane encapsulation. Also, this document explains how the same kind of forwarding model can be achieved using standard protocols. Amazon has not published details of its VPC networking solution, and this document relies on publically available information and the author’s studies. The motivation for writing this document was that I wanted to point out that no matter how simple and easy to manage Cloud Networking looks and feels like, those still are as complex as any other large scale networks.
Example Environment
Figure 1-1 illustrates an example AWS VPC environment running on an imaginary application on two Elastic Cloud Computing (EC2) Instances, EC2-A and EC2-B. The instance EC2-A will be launched in physical server Host-A while the instance EC2-B will later be launched in physical server Host-B. The VPC vpc-1a2b3c4d is created in Stockholm (eu-north-1) Region in Availability Zone (AZ) eu-north-1c. The subnet 172.16.31.0/20 can be used in AZ eu-north-1c. The subnet for instances is 172.31.10.0/24. Elastic Network Interface-1 (ENI1) with IP address 172.31.10.10 will be attached to the instance EC2-A and ENI2 with IP address 172.31.10.20 will be attached to the instance EC2-B. For simplicity, the same Security Group (SG) “sg-nwktimes”, allowing all data traffic between EC2-A and EC2-B) is attached to both instances.
Inside both physical servers, there is a software router, Router-1 in Host-A and Router-2 in Host-B. Servers use offload NICs for connection to AZ Underlay Network and data traffic from instances is sent out of the server straight to offload NIC bypassing the hypervisor. The AZ Backbone includes three routers, Router-3, Router-4, and Router-5. Also, there is a Mapping Service that represents the centralized Control Plane. It holds an Instance-to-Location Mapping Database that has information about every EC2 Instances running on a given VPC. Routers, servers and Mapping Service use IPv6 addressing.
Figure 1-1: Overall example topology and IP addressing scheme.
Top Beauty Networking Events in 2020
If you are in the beauty industry, then you are going to want to attend as many beauty networking events in 2020 as possible in order to make connections with other people in the field. Any beauty event, whether a trade show, a conference, or a demonstration can be used as a beauty networking event, since these events give you access to professionals in the field.
There are a number of different beauty networking events set for this year 2020, and each event can be a great way for you to meet and network with new people in the industry, learn about new makeup and skin care trends, and even learn about new makeup techniques – all of which can be helpful to your business.
Look for Beauty Networking Events Online
If you are looking for some beauty networking events near you, check online to find out where various beauty events will be held throughout the year. There are several events being held, and some offer better networking opportunities than others. You’ll need to decide for yourself which event will provide you with the networking opportunities you are looking for based on what type of beauty business you are Continue reading
Splunk Makes Security Hygiene Sexy Again
“Vulnerability management, configuration management, patch management — those things should...
© SDxCentral, LLC. Use of this feed is limited to personal, non-commercial use and is governed by SDxCentral's Terms of Use (https://www.sdxcentral.com/legal/terms-of-service/). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.
Protect your team with Cloudflare Gateway
On January 7th, we announced Cloudflare for Teams, a new way to protect organizations and their employees globally, without sacrificing performance. Cloudflare for Teams centers around two core products - Cloudflare Access and Cloudflare Gateway. Cloudflare Access is already available and used by thousands of teams around the world to secure internal applications. Cloudflare Gateway solves the other end of the problem by protecting those teams from security threats without sacrificing performance.
Today, we’re excited to announce new secure DNS filtering capabilities in Cloudflare Gateway. Cloudflare Gateway protects teams from threats like malware, phishing, ransomware, crypto-mining and other security threats. You can start using Cloudflare Gateway at dash.teams.cloudflare.com. Getting started takes less than five minutes.
Why Cloudflare Gateway?
We built Cloudflare Gateway to address key challenges our customers experience with managing and securing global networks. The root cause of these challenges is architecture and inability to scale. Legacy network security models solved problems in the 1990s, but teams have continued to attempt to force the Internet of the 2020s through them.
Historically, branch offices sent all of their Internet-bound traffic to one centralized data center at or near corporate headquarters. Administrators configured that to make sure all Continue reading