In this blog post, we'll explore key considerations for circuit design at the network edge, including path diversity, active/active strategies, Autonomous System Number (ASN) filtering, BGP communities, and resilient edge architectures. Traditional electronic packet switching has dominated network architectures for decades, but the exponential growth in data-intensive applications such as augmented reality, autonomous vehicles, and real-time analytics has exposed fundamental limitations in current edge computing deployments. A "15-minute patch" becomes a 3-day ticket when the next available window is Thursday. Error risk: Wrong port, wrong customer path, reversed. In this series 'Network edge design', Brandon Hitzel shares practical lessons learned from designing edge networks, building on his first series on the topic. Previously, I wrote a series of posts about network edge design, with a focus on using dual Internet Service Providers (ISPs), Demilitarized. 1State Key Laboratory of Information Photonics and Optical Communications (IPOC), Beijing University of Posts and Telecommunications, 10 Xitucheng Rd, Bei Tai Ping Zhuang, Haidian Qu, Beijing, 100876, China 2IPI-ECO Research Institute, Eindhoven University of Technology, 5600MB Eindhoven, The. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY. Edge computing perfectly integrates cloud computing centers and edge-end devices together, but there are not many related researches on how the edge-end node devices work to form an edge network and what the protocols used to implement the communication among nodes in the edge network.