Seamless Data Networking for Enterprise VPN Routing
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Solution Overview
Problem
Traditional VPN systems become inefficient when a roaming client establishes a physical connection at an enterprise site, as they often route traffic through unnecessary VPN gateways, causing delays and increased load on local access links, and require reestablishing connections, which can disrupt active IP sessions.
Innovation Solution
A method and system that detect when a client becomes a resident within a secure network, allowing the virtual address to be recognized as a local address, thereby routing network traffic to avoid the VPN gateway, while maintaining the same IP address and ensuring seamless connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a roaming client establishes a physical connection at an enterprise site, then local network access is enabled, but traffic continues to route through VPN gateways causing delays and increased load
Solution Approach 1:
The system dynamically adjusts routing based on client location status. When a client transitions from roaming to local, the routing path is automatically updated to bypass the VPN gateway, optimizing traffic flow in real-time based on current network conditions and client position.
Solution Approach 2:
The invention changes the routing parameter from fixed VPN-based routing to dynamic routing based on client status. By detecting when a client becomes local, the system modifies the routing path parameter to eliminate unnecessary VPN gateway traversal, thereby reducing latency and improving speed.
2Reliability
If traffic is routed through VPN gateways for local clients, then security is maintained, but load on local access links increases
Solution Approach 1:
The system applies different routing quality to different client types. Roaming clients continue to use VPN gateway routing for security, while local clients receive optimized direct routing. This localized quality adjustment reduces unnecessary load on access links while maintaining security where required.
Solution Approach 2:
The invention extracts the VPN gateway routing requirement from local clients, removing the unnecessary security processing step for clients already within the secure network perimeter. This separation allows security to be maintained for roaming clients while eliminating redundant security overhead for local clients.
3Adaptability or versatility
If clients reestablish connections when migrating from external to secure access networks, then new local addresses are assigned, but active IP sessions are dropped
Solution Approach 1:
The system maintains continuous IP sessions by preserving the virtual address assignment across network transitions. When clients move from external to internal networks, their VPN-established virtual addresses remain valid, allowing active sessions to continue without interruption while adapting to the new network environment.
Solution Approach 2:
The invention performs preliminary address assignment through VPN that persists into the local network environment. By establishing the virtual address in advance during the roaming phase, the system prepares a continuous networking identity that eliminates the need for reconnection and session reestablishment when transitioning to local access.
Data Source
AI summary
A roaming client in communication with an enterprise site through a virtual private network (VPN) gateway maintains an address for a virtual network interface upon becoming a resident client at the enterprise site. A physical interface for the resident includes two valid addresses. Seamless data networking is achieved while promoting routing efficiency by reducing the amount of local traffic addressed to and from the virtual address that is unnecessarily routed through VPN gateways.