Short Take – Thinking Differently
We’ve all heard the Apple Slogan “Think Different” but is that something we actually do? In this Network Collective Short Take, Russ and Eyvonne explore this idea of thinking differently and how our thought process impacts the work that we do.
Eyvonne Sharp
Host
Russ White
Host
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Making the Case for Community Networks at Africa IGF
Who supplies your Internet? If you live in urban Africa, you probably get Internet access through your mobile phone or through fibre at the office or home. When you travel to rural or underserved areas, there is probably limited or no Internet because mobile network operators and Internet Service Providers (ISPs) have yet to reach these areas. But what if people in rural and underserved areas could build their own networks to provide the telecommunications services that they need?
This notion has been tried successfully in several African countries. In Kenya, Tunapanda Institute has built TunapandaNET a wireless network connecting schools and youth centres in Kibera, Kenya’s largest slum. Bosco is a solar-powered wireless network that connects community ICT centres in Gulu, Northern Uganda. PamojaNet operates a wireless network to the community in Idjwi Island on lake Kivu, Eastern DRC, close to the border with Rwanda. Others such as Machaworks in rural Zambia and Zenzeleni Networks in Eastern Cape of South Africa provide similar services. These networks have been built by local communities to provide access to both offline content and Internet access where possible to the communities that they serve.
During a session at the 2018 Africa Internet Governance Continue reading
Cloud Computing without Containers
Cloudflare has a cloud computing platform called Workers. Unlike essentially every other cloud computing platform I know of, it doesn’t use containers or virtual machines. We believe that is the future of Serverless and cloud computing in general, and I’ll try to convince you why.
Isolates
Two years ago we had a problem. We were limited in how many features and options we could build in-house, we needed a way for customers to be able to build for themselves. We set out to find a way to let people write code on our servers deployed around the world (we had a little over a hundred data centers then, 155 as of this writing). Our system needed to run untrusted code securely, with low overhead. We sit in front of ten million sites and process millions and millions of requests per second, it also had to run very very quickly.
The Lua we had used previously didn’t run in a sandbox; customers couldn’t write their own code without our supervision. Traditional virtualization and container technologies like Kubernetes would have been exceptionally expensive for everyone involved. Running thousands of Kubernetes pods in a single location would be resource intensive, doing it in Continue reading
Performance Testing: WinPcap versus Npcap
In this video, Tony Fortunato tests WinPcap versus Npcap. See which performs better.
Video: SDWAN Reference Design
After explaining the basics of SD-WAN, Pradosh Mohapatra, the author of SD-WAN Overview webinar focused on SDWAN reference network design.
You need at least free ipSpace.net subscription to watch the video.
Broadcom Cuts More Than 300 CA Technologies Jobs, Report Says
Broadcom closed on its $18.9 billion acquisition of CA earlier this week.
IDC: It’s Too Early to Determine 5G Vendor Winners and Losers
The 5G-related network infrastructure market will grow from about $528 million in 2018 to $26 billion in 2022 at a compound annual growth rate of 118 percent, predicts IDC.
Cisco Continues Kubernetes Kraze With AWS Hybrid Software
While Cisco adds Kubernetes support across its portfolio, other vendors like VMware and IBM recently bought companies to boost their container cred.
Mimik Unleashes the Server Power of Edge Devices
The platform minimizes the need for cloud resources to power edge devices by turning ordinary devices, like a mobile phone, into a mini cloud server.
Ericsson Forecasts Brighter Days Ahead
CEO Borje Ekholm said that the company’s turnaround strategy is working. Ericsson increased its sales goals by $2 billion for 2020.
Network Troubleshooting Webinar on Safari Books
I just redid my slides for the network troubleshooting seminar I teach on Safari Books from time to time. This new set of slides should make for a better webinar. The outline now covers—
Segment 1: Foundations
Length: 50 minutes
- MTTR, MTBM, MTBM
- Resiliency in terms of troubleshooting
- Positive feedback loops
- Automated processes and fragility
- The troubleshooting process
- Avoiding the narrows
- Using models to dive deeper
- Using abstraction to counter the combinatorial explosion
- When abstractions leak
- What, how, and why models
10 Minute Break
Segment 2: Process
Length: 50 minutes
- The theory of half split, as seen from search trees
- Putting it together: a simple troubleshooting loop and the half-split
- Using manipulability theory to prove it
- Observations on observations
10 Minute Break
Segment 3: Examples
Length: 50 minutes
- The EIGRP case
- The BGP case
- IS-IS and BFD
10 minute final Question and Answer Period
You can register here. Note the name of the seminar is changing, so the URL might change, as well.