Packets DownRange
A little off the beaten path on this one. We are diving into a big part of a Cellular tower deployment. Many sites now use an Active Antenna Unit, or AAU. The radio and the antenna are built into the same enclosure. An AAU combines the antenna, radio transceivers, power amplifiers, and low-noise amplifiers into … Read more
If you’ve spent any time looking into fiber Internet, you’ve probably run across terms like GPON, XGS-PON, OLT, and ONT. These are all parts of what’s called a Passive Optical Network, or PON. Most residential fiber providers use PON because it lets them connect alot of homes without having to pull a separate fiber from … Read more
A Python script usually spends very little time doing actual Python work. Most of the actual work comes from libraries that know how to connect to network devices and do the work. They interact with APIs. Once you understand what each library does, you can spend less time writing code and more time solving network … Read more
Python has become one of the most valuable tools in a network engineer’s toolbox. You do not need to write thousands of lines of code or become a software developer to get value from it. If you are kind of old school like me, anything other than bash scripting might be new. In this article, … Read more
I am starting a type of blog post, I will start working into the rotation. These will be aimed at quick knowledge you should know along with an action. In our busy lives we don’t have time to read through 3 pages of text to do soemthign that takes less time to do than it … Read more
RFC 10005 defines a BGP extended community that lets a router attach link bandwidth information to a route. Another router can use that value when it spreads traffic across multiple BGP paths. RFC 10005 matters because links are not always of the same capacity. This RFC provides routers with a standard way to carry bandwidth … Read more
We are starting to hear about “Thin” and “Fat” rails in AI fabrics. These are just another way to say a connection from compute into the Fabric. The link either has sufficient capacity (Fat) or insufficient capacity (Thin). A thin rail provides the node with a single path into the fabric. That may be one … Read more
I originally posted this over on the FD-IX Bloghttps://blog.fd-ix.com/george-washington-the-delaware-and-direct-routes/ When George Washington crossed the Delaware River on Christmas night in 1776, the goal was simple. Reach the objective by the most effective path while avoiding unnecessary delays and giving the opposing force as little warning as possible. The crossing was risky, but it created a … Read more
A browser does not always need the whole file at once. Sometimes it only needs a slice of the file. That slice might be the next part of a video or a chunk of a large object sitting behind a CDN. When that happens, the client can request a byte range instead of requesting the … Read more
Justin Wilson announces his second children’s networking book, A Kid’s First Visit to an Internet Exchange. Follow Sam as he learns how networks meet, peer, and move Internet traffic.
NBASE-T bridges the gap between 1 Gigabit and 10 Gigabit Ethernet by supporting 2.5 Gbps and 5 Gbps over existing copper cabling. Learn how it works, where it makes sense, and what network engineers should look for when deploying and troubleshooting multi-gigabit links.
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