Impact of Azure Subnets on High Availability Designs
Now that you know all about regions and availability zones (AZ) and the ways AWS and Azure implement subnets, let’s get to the crux of the original question Daniel Dib sent me:
As I understand it, subnets in Azure span availability zones. Do you see any drawback to this? You mentioned that it’s difficult to create application swimlanes that way. But does subnet matter if your VMs are in different AZs?
It’s time I explain the concepts of application swimlanes and how they apply to availability zones in public clouds.
Impact of Azure Subnets on High Availability Designs
Now that you know all about regions and availability zones (AZ) and the ways AWS and Azure implement subnets, let’s get to the crux of the original question Daniel Dib sent me:
As I understand it, subnets in Azure span availability zones. Do you see any drawback to this? You mentioned that it’s difficult to create application swimlanes that way. But does subnet matter if your VMs are in different AZs?
It’s time I explain the concepts of application swimlanes and how they apply to availability zones in public clouds.
VPC peering with terraform
I wrote up an example of using terraform modules and provider aliases to turn up interconnected cloud resources (vpcs / vpc peering / peering acceptance / routes) across multiple cloud regions.
New Year, New Name: Insights Platform Is Now Internet Society Pulse
In order to align better with the Internet Society’s brand strategy, and to further differentiate our platform from other products with similar names, we have decided to rename our measurement platform.
As of 1 March, 2021, Insights will be known as Internet Society Pulse.
The new URL is: https://pulse.internetsociety.org/
A redirect will be implemented so that anyone navigating to the previous URL will be automatically taken to Internet Society Pulse.
And, if you follow us on Twitter, you’ll see that our handle has been changed from @isoc_insights to @isoc_pulse.
The platform’s look and feel will not change.
Looking Ahead
We launched Insights in early December 2020 and are extremely proud of the impact that the platform has had in just three short months. We’re looking forward to ramping up the platform further in 2021 and will be adding three new focus areas throughout the year:
- Internet Resilience
- The Internet Way of Networking
- Keeping Traffic Local
In 2021, we’ll also expand our analysis and reporting offerings, increase our engagement with the Internet measurements community, bring on board more data partners and add new features to the platform.
Stay up to date by signing up to our mailing list and Continue reading
Attend Future:NET 2021 – A Premier Networking Event
What is Future:NET?
Sponsored by VMware, Future:NET 2021 is the premier thought leadership event on networking of the year. Scheduled for March 23 in AMER and March 24 in EMEA and APJ, the event will be simulcast live around the world—showcasing authentic, in-depth discussions led by the who’s-who of networking leaders. Come prepared to hear open, honest, and sometimes lively conversations about the future direction of networking.
How is Future:NET 2021 Different from Previous Years?
Future:NET has always been an invite-only, in-person event held during VMworld U.S. This year, we are taking it to the next level with a virtual format that will be broadcast live to a global audience on a new, interactive online platform. This will preserve the intimate, authentic feel of past events while allowing participants to share valuable insights with change agents around the world.
Why Attend Future:NET?
Future:NET is a different kind of industry event. While other networking conferences have been reduced to vendor showcases, Future:NET disallows product pitches in favor of open debates that foster in-depth conversation among professionals across the industry. This will not be a VMware showcase or a think tank. Future:NET is a vendor-agnostic industry event led by those who have forecasted, created, or disseminated change and who are lured by new technology and its ability to transform the world. Hear from luminaries such as Albert Greenberg from Azure, Bikash Koley from Google Cloud, Nick McKeown of Stanford University, Pere Monclus from VMware, and Vijoy Pandey from Continue reading
Rethinking BGP on the DC Fabric (part 5)
BGP is widely used as an IGP in the underlay of modern DC fabrics. This series argues this is not the best long-term solution to the problem of routing in fabrics because BGP is not ideal for this use case. This post will consider the potential harm we are doing to the larger Internet by pressing BGP into a role it was not originally designed to fulfill—an underlay protocol or an IGP.
My last post described the kinds of configuration required to make BGP work on a DC fabric—it turns out that the configuration of each BGP speaker on the fabric is close to unique. It is possible to automate configuring each speaker—but it would be better if we could get closer to autonomic operation.
To move BGP closer to autonomic operation in a DC fabric, there are several things we can do. First, we can allow a BGP speaker to peer with any other BGP speaker it receives an open message from—this is often called promiscuous mode. While each router in the fabric will still need to be configured with the right autonomous system, at least we won’t need to configure the correct peers on each router (including the Continue reading
Network Break 322: Juniper Mist-ifes 128 Technology; US Telcos Spend Big For 5G Spectrum
On today's Network Break we discuss a slate of Juniper announcements around new integrations with its Mist platform, plus new switches. HPE acquires a SaaS company for controlling cloud and infrastructure costs, US telcos spend $81 billion on spectrum for 5G, and we dive into the latest round of financial results from SolarWinds, VMware, and Nutanix.Network Break 322: Juniper Mist-ifes 128 Technology; US Telcos Spend Big For 5G Spectrum
On today's Network Break we discuss a slate of Juniper announcements around new integrations with its Mist platform, plus new switches. HPE acquires a SaaS company for controlling cloud and infrastructure costs, US telcos spend $81 billion on spectrum for 5G, and we dive into the latest round of financial results from SolarWinds, VMware, and Nutanix.
The post Network Break 322: Juniper Mist-ifes 128 Technology; US Telcos Spend Big For 5G Spectrum appeared first on Packet Pushers.
DDoS Mitigation with Juniper, sFlow, and BGP Flowspec
This article discusses how to deploy the DDoS Protect application in a Juniper Networks environment. Juniper has a long history of supporting BGP Flowspec on their routing platforms and Juniper has added support for sFlow to their entire product range, see sFlow available on Juniper MX series routers.
First, Junos doesn't provide a way to connect to the non-standard BGP port (1179) that sFlow-RT uses by default. Allowing sFlow-RT to open the standard BGP port (179) requires that the service be given additional Linux capabilities.
docker run --rm --net=host --sysctl net.ipv4.ip_unprivileged_port_start=0 \
sflow/ddos-protect -Dbgp.port=179
The above command launches the prebuilt sflow/ddos-protect Docker image. Alternatively, if sFlow-RT has been installed as a deb / rpm package, then the required permissions can be added to the service.
sudo systemctl edit sflow-rt.serviceType the above command to edit the Continue reading
Tech Bytes: Law Firm Relies On Aruba EdgeConnect To Support Work-From-Anywhere (Sponsored)
On today's Tech Bytes podcast, sponsored by Aruba, we talk with Scott Shaw, Chief Technology Officer at law firm FordHarrison about his SD-WAN deployment. Shaw was able to retire legacy routers, boost performance of critical applications, and enable the law firm's work-from-anywhere strategy.Tech Bytes: Law Firm Relies On Aruba EdgeConnect To Support Work-From-Anywhere (Sponsored)
On today's Tech Bytes podcast, sponsored by Aruba, we talk with Scott Shaw, Chief Technology Officer at law firm FordHarrison about his SD-WAN deployment. Shaw was able to retire legacy routers, boost performance of critical applications, and enable the law firm's work-from-anywhere strategy.
The post Tech Bytes: Law Firm Relies On Aruba EdgeConnect To Support Work-From-Anywhere (Sponsored) appeared first on Packet Pushers.
IPv6 Buzz 070: Building An IPv6 Lab, Revisited
In this week's IPv6 Buzz episode, Ed, Scott, and Tom follow up on episode 44 and talk more about what it takes to build an IPv6 lab—both dual-stack and IPv6-only—as well as with physical hardware and in the cloud).
The post IPv6 Buzz 070: Building An IPv6 Lab, Revisited appeared first on Packet Pushers.
IPv6 Buzz 070: Building An IPv6 Lab, Revisited
In this week's IPv6 Buzz episode, Ed, Scott, and Tom follow up on episode 44 and talk more about what it takes to build an IPv6 lab—both dual-stack and IPv6-only—as well as with physical hardware and in the cloud).The Week in Internet News: Cambodia Creates Its Own Great Firewall
Traffic cops: The government of Cambodia has moved to establish a national Internet gateway with a single point of entry for traffic into the country, regulated by a government-appointed operator, The Diplomat reports. The Washington Post’s editorial board said the move “strikes at one of the nation’s last vestiges of democratic life.” The move also points to a larger threat to “the entire globe,” led by censorship efforts in China, the editorial board wrote. “China wishes to establish a freedom-crushing model of cyber-sovereignty by which every country sets its own rules for a Web that serves those in power, rather than the people, without any regard for civil liberties or due process of law.”
A deal on the news: Facebook had prohibited Australian users from sharing news on the social media site because of a proposal that would require it and other online services to pay news outlets, but the company has reached a deal with the government there that again allows users to post news articles, the New York Times reports. The deal allows more time for negotiations, but the Australian Senate passed the law anyway, CNet reports.
Help with the bills: The U.S. Federal Communications Continue reading
Cracking WPA/WPA2 Pre-shared Key
This tutorial illustrates cracking of pre-shared key which is needed to gain an access to a WPA/WPA2 network. Instead of explaining the theory behind the attack, I focus on providing commands that you can easily copy and paste and penetrate the network. However, I strongly recommend getting a background to this topic by studying online […]Continue reading...
NFA v 21.02 is here with support for eBGP
The post NFA v 21.02 is here with support for eBGP appeared first on Noction.