Packets DownRange
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When BGP (Border Gateway Protocol) misbehaves, the ripple effect can be massive—routes disappear, prefixes flap, and connectivity grinds to a halt. Whether you’re managing a large enterprise edge or an ISP core, knowing how to quickly diagnose BGP issues on Cisco routers is critical. Here’s a hands-on guide to the most useful Cisco IOS BGP … Read more
Through my job at Nexstream, I have been utilizing Calix University to further my education in the broadband space. I am happy to announce that I have achieved several certificates over the past month.
Recently, I did a VRF article. Like everyone else, I am seeing what all AI can do. As a result, I have been utilizing an AI tool to convert some of my articles to an audio format (Thanks, Cameron). The following is one such conversion of the above article. Keep in mind that this audio … Read more
Border Gateway Protocol (BGP) is a protocol that makes the Capital I Internet run. It is the fundamental system that Internet Service Providers (ISPs) and large networks use to exchange reachability information and ensure data finds its way across the complex web of networks making up the global Internet. This post will demystify how BGP … Read more
Cybersecurity is among the fastest-growing fields today, offering exciting challenges, high demand, and strong earning potential. If you’re interested in protecting systems, networks, and data from cyber threats, here are some books to get you started. 1. Web Application Hacker’s HandbookThe highly successful security book returns with a new edition, completely updatedWeb applications are the … Read more
This post will walk you through what a VRF is, why it matters, and how it’s used in real-world networking. What is a VRF? VRF stands for Virtual Routing and Forwarding. It’s a technology that allows multiple instances of routing tables to coexist on the same physical router or Layer 3 switch. Each VRF is … Read more
1. Basic VRF Architecture Diagram A single router with two VRFs (e.g., Customer_A and Customer_B), each with its own routing table and interface. Purpose: Shows how two VRFs keep overlapping IP spaces separated. 2. Traffic Isolation in VRFs Two devices connected to the same router but isolated via VRFs. 3. VRF Routing Tables Example Purpose: … Read more
*) bgp – added input.filter-community;*) bgp – fixed excessive CPU usage;*) bgp – fixed input.accept-community;*) bgp – fixed memory leak on receiving notify and closing session;*) bgp – improved performance on BGP input;
Take the political commentary from the 3rd party people in the second and third vidoes with a grain of salt. These videos talk about the broadband funding process.
Thunderstorms, seventy-degree weather, and snow. Welcome to Indiana weather. In this issue, we have some exciting events and topics. Several folks in Indiana are preparing for the 2025 Midwest Broadband Operators Meeting. This is May 14-15th. Interconnection & Data Center News•Zayo to acquire Crown Castle. •Microsoft Data Centers. This partnership will support an open architecture … Read more
FBI The U.S. Federal Bureau of Investigations (FBI) has websites about cybersecurity and ransomware specifically. The FBI ransomware site is located here: https://www.fbi.gov/how-we-can-help-you/safety-resources/scams-and-safety/common-scams-and-crimes/ransomware(opens in a new tab) NIST The National Institute of Science and Technologies is a U.S. Government agency that maintains a web portal on cybersecurity standards, guidelines, best practices, and other resources. NIST’s cybersecurity … Read more