Service Control Device for Dynamic Application Layer Association
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Solution Overview
Problem
In computer networking, service providers face challenges in applying specific services to data packets associated with connections due to the lack of application layer information in connection control packets, which prevents service devices from correctly forwarding these packets to the intended server devices.
Innovation Solution
A service control device determines the network address within a connection control packet and matches it to an application layer identifier, allowing it to provide the connection control packet to the appropriate service device for applying the intended service to data packets based on pre-defined service rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection control packets are forwarded without application layer information, then forwarding speed is maintained, but service devices cannot correctly identify and apply services to data packets
Solution Approach 1:
The service control device performs preliminary actions by determining the network address from the connection control packet and matching it to an application layer identifier before the packet reaches the service device. This advance preparation enables service devices to correctly apply services without adding complexity to their operation, as the mapping information is already established.
Solution Approach 2:
The service control device acts as an intermediary between the network and service devices. It receives connection control packets, determines network addresses, matches them to application layer identifiers, and provides this mapping information to service devices. This intermediary role resolves the contradiction by enabling accurate service application without requiring service devices to perform complex packet analysis.
2Reliability
If network address matching to application layer identifier is performed, then service rules can be correctly applied, but additional processing time is required
Solution Approach 1:
The service control device performs the network address to application layer identifier matching as a preliminary action before packets are forwarded to service devices. By establishing these mappings in advance, the system ensures accurate service rule application without adding processing delays at the service device level, as the matching is completed proactively.
3Adaptability or versatility
If service control device determines and matches network addresses, then services are correctly associated with connections, but device functionality complexity increases
Solution Approach 1:
The service control device is designed with multi-functionality, performing network address determination, application layer identifier matching, and service rule identification in a single integrated system. This universal approach enhances service association capability while managing device complexity through consolidation of functions rather than requiring separate specialized components.
Data Source
AI summary
A device may receive a control packet associated with a connection. The control packet may include a network address. The device may identify an application layer identifier that is associated with the network address. The device may identify a service rule associated with the application layer identifier. The service rule may identify a service to be applied to a data packet associated with the connection. The device may provide the control packet based on identifying the service rule. The control packet may be provided to permit the service to be applied to the data packet in accordance with the service rule.