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: This is especially important in high-latency networks such as in the 3rd world or some Fixed Wireless networks Conclusion While leveraging third-party DNS services like Google or Cloudflare offers a plug-and-play solution for ISPs, in the long run, it might be more beneficial...
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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 BGP routing. This can be for several reasons. The first is for what BGP was designed for autonomy. Companies are not at the mercy of a single provider for critical infrastructure. If you have ever had to switch providers with IP addresses from...
Continue reading...Quantum Computing, and why you, as an Internet Service Provider should care
Quantum computing is one of those buzzwords floating around. Should you, as an Internet Service Provider, care? In this blog post, I will go over, at a high level, what quantum computing is and what to watch if you are a Service Provider. Quantum computing leverages the principles of quantum mechanics to perform complex computations exponentially faster than classical computers. Computers we are used to use bits (0s and 1s) to store and process information, whereas quantum computers use quantum bits, or qubits....
Continue reading...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 network fabric. It offers seamless bridging and routing of traffic across data centers, making it ideal for modern applications that demand low latency and high availability. EVPN operates on the concept of a “control plane” and a “data plane.” The control plane handles...
Continue reading...Why network admins are weird Part 1
The next time you think your friend, significant other, or neighbor is weird, they might be a network admin. Here are some reasons to have caused this.
Continue reading...Rookie network mistake this morning, and musings
Over the past few years, I have been trying to train myself out of First Responder mode and into the ability to take a step back and evaluate the situation when it comes to network outages. Being in the ISP field for so long, you get into a mentality of just fixing the problem. This can cause you to just jump in and focus on putting out whatever the latest fire is. This mindset differs from engineering a new point of Presence (POP)....
Continue reading...PDR #23: Patreon Edition. Python, BGP, ARIN51
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon at $3 or more Unlock with PatreonAlready a qualifying Patreon member? Refresh to access this content.
Continue reading...ISP vendors and industry guest posts
With the newsletter subscription mechanism out of the way, I have had some time to work on another project for the blog. Today I am excited to announce guest posts on the blog. If you are a Vendor or manufacturer in the ISP space, I invite you to reach out on how to post your own content on this blog. Internet Service Providers (ISPs) looking to gain more exposure are invited as well. Currently, I am receiving an average of 11,000 unique visits...
Continue reading...Looking at leasing IP Addresses?
Are you looking at leasing some IP addresses for your ISP or company? If so, check out ARIN’s page on IP leasing. The biggest thing ISPs should pay attention to the following:Address space leased without providing Internet services cannot be used for justification when requesting IPv4 addresses from the Waiting List (4.1.8) or specified market transfers (8.3 and 8.4 recipients). If you are leasing addresses to an organization, you cannot use the leasing arrangement as a reason for requesting additional IPv4 addresses.
Continue reading...10 Gig thunderbolt adaptor for troubleshooting
*correction to the original post* Being a mac user, I forget not everyone has thunderbolt ports. Many of the folks I talk to are deploying more and more 10Gig switches and links. ISP and network techs are used to plug in a laptop for a quick test. How do you do that with 10Gig fiber? Here is your answer! This device is one way to help diagnose issues and connectivity on those 10Gig links. Just need thunderbolt on your laptop. You can insert...
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