{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9853896","patent":{"patent_number":"US-9853896","title":"Method, device, and virtual private network system for advertising routing information","assignee":null,"inventors":[],"filing_date":"2013-05-16T00:00:00.000Z","publication_date":"2017-12-26T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":14,"abstract":"The present invention discloses a method for advertising routing information, and embodiments of the present invention further provide a virtual private network server device, an IP edge node device, and a client-based virtual private network system. In the technical solutions of the present invention, a virtual private network server first collects MAC address routing information of each site on a local virtual private network and then sends MAC address routing information of each site except a destination site in a unicast manner to a customer edge node that corresponds to each site on the virtual private network. This solves the problem that CE nodes in sites on the virtual private network cannot exchange routing information with each other by using a routing protocol because multicast packets are filtered by an access node of the data center network."},"analysis":{"summary":"The Method, Device, and Virtual Private Network System for Advertising Routing Information patent addresses the challenge of efficiently routing information within Virtual Private Networks (VPNs). The core innovation lies in using a unicast-based approach to advertise routing information, overcoming the limitations imposed by multicast filtering in data center networks. This filtering often prevents Customer Edge (CE) nodes from effectively exchanging routing information using standard routing protocols. The patent describes a VPN server that collects MAC address routing information from each site on the local VPN and then sends this information, excluding the destination site's details, to the corresponding CE node in a unicast manner. This targeted approach ensures that each CE node receives the necessary routing information without relying on multicast communication.\n\nThe problem being solved is the inability of CE nodes to communicate routing information effectively due to multicast filtering. Traditional routing protocols rely on multicast communication, which is often blocked in data center environments. The key technical approach involves replacing multicast communication with unicast communication, ensuring that routing information is delivered directly to each CE node. This improves network performance, reduces latency, and enhances security.\n\nThe business value of this innovation lies in its ability to improve the reliability and efficiency of VPNs. This can lead to better user experiences, reduced operational costs, and enhanced security. The market opportunity is significant, as VPNs are increasingly used by businesses and individuals for secure online communication. By addressing the limitations of traditional VPN routing methods, this patent has the potential to capture a significant share of the VPN market.\n\nThe Method, Device, and Virtual Private Network System for Advertising Routing Information represents a significant advancement in VPN technology, offering a more efficient and reliable approach to routing information. This innovation has the potential to transform how VPNs are deployed and managed, paving the way for more secure and efficient network communication.","layman_explanation":"The Method, Device, and Virtual Private Network System for Advertising Routing Information patent addresses a common problem in Virtual Private Networks (VPNs): inefficient routing of information. Let's break it down in simple terms.\n\n**1. What Problem Does This Solve?**\nVPNs are used to create secure connections over the internet. Think of it as building a private tunnel between your computer and the website you're visiting. However, sometimes the 'roads' inside this tunnel aren't very efficient. Information can get lost or delayed, especially when dealing with complex networks. Existing solutions often struggle because they rely on broadcasting information to everyone, which can be blocked or filtered in some networks, like those in data centers.\n\n**2. How Does It Work?**\nThis patent proposes a smarter way to manage the 'roads' inside the VPN. Instead of broadcasting information, it uses a 'direct delivery' system. Imagine a central post office that knows the address of every house in the network. When a message needs to be sent, the post office sends it directly to the right house, instead of shouting it out for everyone to hear. In technical terms, it uses 'unicast' communication instead of 'multicast.' The VPN server collects information about the network and then sends specific routing details directly to each 'house' (or CE node) that needs it.\n\n**3. Why Does This Matter?**\nThis new approach can significantly improve the performance and reliability of VPNs. It's like upgrading from a dirt road to a smooth highway. This means faster connections, less lag, and more secure communication. For businesses, this translates to better productivity, reduced downtime, and improved security. It also opens up new opportunities for VPN providers to offer more reliable and efficient services.\n\n**4. What's Next?**\nAs more businesses and individuals rely on VPNs for secure communication, the demand for efficient routing solutions will continue to grow. This patent could pave the way for next-generation VPNs that are faster, more reliable, and more secure. The technology could also be adapted for other types of networks, such as cloud computing and software-defined networking. Investments in this area could lead to significant advancements in network technology and cybersecurity.","technical_analysis":"The Method, Device, and Virtual Private Network System for Advertising Routing Information patent presents a technical solution to a common problem in VPN deployments: the inability of CE nodes to exchange routing information due to multicast filtering. The technical architecture involves a central VPN server that maintains a database of MAC address routing information for each site within the VPN. This server acts as a central point for collecting and distributing routing information.\n\nThe implementation details involve the use of standard IP protocols for unicast communication. The VPN server sends routing updates to each CE node using unicast packets, ensuring that the information is delivered directly and reliably. The algorithm used for collecting and distributing routing information is relatively straightforward, involving a simple lookup and forwarding mechanism. The system can be integrated with existing VPN management tools and protocols, making it easy to deploy and manage.\n\nThe performance characteristics of the system are significantly better than traditional multicast-based routing methods. By eliminating the need for multicast communication, the system avoids the overhead and complexity associated with multicast routing protocols. This results in lower latency, higher throughput, and improved overall network performance. The code-level implications involve the implementation of a simple unicast forwarding mechanism within the VPN server and CE nodes. This can be achieved using standard programming languages and network APIs.\n\nThe Method, Device, and Virtual Private Network System for Advertising Routing Information represents a significant improvement over existing VPN routing methods. Its simple and efficient architecture makes it easy to deploy and manage, while its improved performance characteristics make it a valuable asset for any organization that relies on VPNs for secure communication.","business_analysis":"The Method, Device, and Virtual Private Network System for Advertising Routing Information patent addresses a critical challenge in the VPN market: the need for more efficient and reliable routing methods. The market opportunity for this innovation is significant, as VPNs are increasingly used by businesses and individuals for secure online communication.\n\nThe competitive advantages of this patent lie in its unique approach to advertising routing information. By using a unicast-based method, the system overcomes the limitations imposed by multicast filtering, which is a common problem in data center networks. This allows the system to achieve better performance, lower latency, and enhanced security compared to traditional VPN routing methods. The revenue potential of this innovation is substantial. By improving the reliability and efficiency of VPNs, the system can attract new customers and retain existing ones. The business model can be based on licensing the technology to VPN providers or offering a managed VPN service that incorporates the innovation.\n\nThe strategic positioning of the Method, Device, and Virtual Private Network System for Advertising Routing Information is strong. The patent provides a unique and valuable solution to a common problem in the VPN market. This allows the system to differentiate itself from competitors and capture a significant share of the market. The ROI projections for this innovation are promising. By reducing operational costs and improving customer satisfaction, the system can generate significant returns for investors. The Method, Device, and Virtual Private Network System for Advertising Routing Information represents a compelling investment opportunity in the VPN market. Its innovative approach to routing information, strong competitive advantages, and significant revenue potential make it a valuable asset for any organization that relies on VPNs for secure communication.","faqs":null,"topics":["VPN routing","virtual private network","unicast routing","multicast filtering","network performance","technical","method","device"],"tech_cluster":null},"seo":{"title":"Efficient VPN Routing - Method, Device, and Virtual Private Network System for Advertising Routing Information","description":"Discover how Method, Device, and Virtual Private Network System for Advertising Routing Information optimizes VPN routing by bypassing multicast filtering. Full patent analysis and technical details.","keywords":["VPN routing","virtual private network","unicast routing","multicast filtering","network performance","patent","patent US-9853896"]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9853896","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9853896","citation_suggestion":"Patentable. \"Method, device, and virtual private network system for advertising routing information\" (US-9853896). https://patentable.app/patents/US-9853896","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9853896","json":"https://patentable.app/api/llm-context/US-9853896","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T13:43:16.703Z"}