Packets DownRange
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Having done consulting for years I saw many instances where BGP, especially ibgp, was used where OSPF would have been a better fit. Sometimes, this was for a specific reason; sometimes, it was just not knowing better. I am from the school, so don’t complicate things necessarily. In this article, I will outline some of … Read more
https://www.pcworld.com/article/2491457/the-fcc-takes-aim-at-broadband-data-caps.html It’s 2024 and yet some internet service providers in the US still charge you if you go over an allocated monthly data limit. Why? It’s not as if internet access is a finite physical resource. It doesn’t cost Comcast more to deliver you 1,001 gigabytes versus 999 gigabytes. Well, the United States Federal Communications … Read more
Why Clean Fiber Optic Cable Ends? Fiber optic networks are designed for high-performance data transmission with minimal interference or loss. However, contaminants on the cable ends can significantly degrade the quality of these transmissions. Below are some key reasons why cleaning fiber optic connectors is essential: 1. Maintaining Signal Integrity At the core of fiber … Read more
Open Shortest Path First (OSPF) is one of the most widely used link-state routing protocols in large enterprise networks, known for its scalability and efficiency in handling complex topologies. One of the key features that makes OSPF flexible is its support for different types of areas. OSPF areas are used to logically group routers, reducing … Read more
The Internet, as we know it today, is a vast network of interconnected systems that allow seamless communication, data transfer, and access to information. But have you ever wondered how data finds its way across such a sprawling network? This is where BGP, or Border Gateway Protocol. While it operates quietly behind the scenes, BGP … Read more
Anyone who works in a data center needs the following tools. Some are essential, and some make their life easier. We all want work to be easier, right? These are just five tools I think everyone who visits a data-center or other similar place should have. These are some tools you wish you had after … Read more
Fiber splicing is joining two optical fibers to create a continuous, low-loss, and highly efficient optical path. This connection is essential to maintaining the integrity and reliability of optical communication networks, whether they are used for internet connectivity, telephony, or data transmission. Fiber splicing can be performed in two primary ways: fusion and mechanical splicing. … Read more
https://blog.apnic.net/2024/03/14/ipv6-dns-and-truncation-in-udp/ In February I looked at the behaviour of the DNS when processing responses in UDP, which set the truncated flag in the DNS response. In particular, I was looking for the incidence of DNS resolvers that used the answer section in truncated responses (despite the admonition in DNS standards not to do so) and the … Read more
In the realm of networking, BGP (Border Gateway Protocol) is a crucial component that helps determine how data is routed across the internet. One of the many attributes within BGP is MED, or Multi-Exit Discriminator. But what exactly is BGP MED, and why should you care about it? Let’s dive into the details. What Is … Read more
For those of you who know. APKTIDVoE5hoOlKQJFS2OK56ARdI70p1zpf9OyJIsPBnlw8sFG5A
I recently worked on a network where we re-piped around four hundred hosts. These four hundred hosts were being monitored by LibreNMS. The question is how to delete this many hosts. I credit https://www.incredigeek.com/home/librenms-bulk-delete/ for this tutorial. I will only add that I used Excel instead of the MySQL database. I knew the IP range, so I opened … Read more