Why ISPs Should Totally Rely on Google and CloudFlare for DNS (Wink)
Guest Post From Glenn Kelley at Connectivity Engineer “Why ISPs Should Totally Rely on Google and CloudFlare for DNS (Wink, Wink)” Alright, folks, gather round as we explore the hilariously absurd notion that Internet Service Providers (ISPs) should shirk their …
If you are an ISP, run your own DNS resolvers
Glenn Kelley has a great article on spinning up your own DNS resolvers. This is a critical piece of infrastructure if you are in internet Service Provider (ISP). https://www.linkedin.com/pulse/making-dns-server-your-network-uses-root-hints-glenn-kelley As Glenn writes. Here’s why ISPs should consider running their own: …
Unpopular opinion: BGP should accept smaller than a /24
For years, we have heard of the depletion of IPv4 address space on the Internet. At the same time, more and more networks are coming online. Out of these new networks, we have an ever-increasing number wanting to participate in …
Internet Service Providers, latency, customers, and how it all fits together
I have noticed a trend regarding customers and latency in the Internet Service Provider (ISP) world. Those in the industry know all about customers and speed tests. Love or hate them, the speed test is a way of life for …
Understanding what is Ethernet Virtual Private Network ( EVPN )
Ethernet Virtual Private Network (EVPN) is designed to provide scalable and efficient data center interconnectivity. Built upon the foundation of traditional Ethernet, EVPN incorporates the best features of layer 2 and layer 3 protocols to create a flexible and secure …
How does the Domain Name System (DNS) works?
Over the years, I have written articles on Domain Name System (DNS) and how and why you should do certain things. I came across this DNS graphic this morning. Image Credit: @Rapid_API As you can see, a never-before-seen DNS request …
Problems with Borger Gateway Protocol (BGP)
Border Gateway Protocol (BGP) is the Internet’s dominant inter-domain routing protocol, and as such, it is a critical component of the Internet’s infrastructure. However, BGP, like any other technology, has flaws. The following are some of the most common BGP …
Virtual Extensible LAN (VXLAN) overview
Virtual Extensible LAN (VXLAN) has emerged as a game changer in network virtualization. In this blog post, we’ll look closely at VXLAN and explore some of its key benefits. In summary, VXLAN is a potent technology that is altering how …
What is a networking packet?
As we use the internet to send and receive data, it is crucial to understand the underlying mechanics that allow this to happen. One of the most fundamental components of this process is the packet. In this blog post, we’ll …
Open Shortest Path First (OSPF) overview
Open Shortest Path First (OSPF) is a widely used interior gateway routing protocol for Internet Protocol (IP) networks. OSPF is used by organizations to route traffic within their own networks, as well as between different networks. Here are some key …