Packets DownRange
Interconnection, peering, Data centers. How the Internet works. IXPs, transit, and other topics. Routing and Control Planes such as BGP and OSPF protocols. RPKI and IP resources are also covered.
Understanding the BGP Origin Code Attribute The BGP Origin Code is a mandatory attribute attached to BGP routes, indicating the origin of a particular route in the BGP table. It specifies how a route was introduced into BGP and provides crucial information about its source. There are three possible origin codes: Significance of the Origin … Read more
What are Border Gateway Attributes, what are they, how do they work, and their significance in shaping internet routing. What Are BGP Attributes? In the context of BGP, attributes are pieces of information associated with each route in the BGP routing table. These attributes provide BGP routers with crucial details about network paths and help … Read more
At the core of this interconnected web of networks is the Border Gateway Protocol (BGP), a fundamental routing protocol that plays a pivotal role in directing internet traffic. In this post, I will explore the significance of BGP and why it is often referred to as the backbone of the internet. I talk about BGP … Read more
Many higher-end routers have a specialized type of memory known as TCAM (Ternary Content Addressable Memory). In this post, I will explain the intricacies of TCAM memory in routers, exploring what it is, how it works, and its critical role in ensuring fast and accurate packet routing. Understanding TCAM Memory Ternary Content Addressable Memory (TCAM) … Read more
In this blog post, we’ll demystify the concept of next-hop-self in BGP, why it’s crucial, and how it affects routing decisions. What Is Next-Hop-Self in BGP? In BGP, the “next hop” is the IP address used to reach a particular network or destination. The “next-hop” IP address is vital for making routing decisions and forwarding … Read more
In the vast and interconnected landscape of the digital world, data packets are the unsung heroes that power our online experiences. These small, seemingly unremarkable data units are like the “Little Engine That Could,” tirelessly chugging along to ensure our emails, videos, and messages reach their intended destinations. In this blog post, we embark on … Read more
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 … Read more
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 … Read more
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 … Read more
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 issues: Some of the above issues are being addressed with RPKI, Routing Registries, and MANRS, … Read more
Data centers are the backbone of the digital world. They house the servers, storage systems, and other critical infrastructure that support the internet and the cloud. A data center is essentially a secure and controlled environment designed to house IT equipment, providing organizations with the power, cooling, and connectivity required to keep their systems and … Read more
