In-band OAM Fixed Byte Insertion Scalability
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Solution Overview
Problem
Current in-band OAM methods are not scalable for large domains as they require a variable number of bytes to store OAM data for each network device along a packet route, making them inefficient and difficult to implement.
Innovation Solution
Implementing a method that uses fixed bytes for in-band OAM by inserting OAM information of only a single network device into each packet, with each device selecting packets at a fixed rate or interval to insert its data into a reserved or optional field, allowing for scalable and efficient data collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If variable bytes are used to store OAM data for each network device along a packet route, then complete OAM information can be collected, but the method becomes non-scalable for large domains and difficult to implement
Solution Approach 1:
The patent segments the OAM data collection by having each network device insert its OAM information into separate, fixed-byte fields within the packet. Instead of using a variable-length structure that requires complex parsing, each device's data is placed in a predetermined fixed-size slot, simplifying the overall system architecture while maintaining complete OAM information from all devices along the route.
2Quantity of substance
If variable bytes are allocated for OAM data storage, then sufficient space is available for all network devices, but the method is inefficient and not scalable
Solution Approach 1:
The patent changes the parameter of byte allocation from variable to fixed. By allocating a predetermined fixed number of bytes for each network device's OAM information, the system achieves both sufficient storage capacity for multiple devices and high processing efficiency. This fixed-parameter approach eliminates the need for dynamic memory management and complex allocation logic, thereby improving productivity while maintaining scalability.
3Adaptability or versatility
If fixed bytes are used for OAM information, then scalability is improved, but the amount of OAM data that can be stored is limited
Solution Approach 1:
The patent applies partial action by having each network device insert its OAM information into a fixed-byte field, but not all fields need to be filled by all devices. The system allows for optional fields that can be populated based on specific network conditions and requirements. This approach maintains scalability while capturing sufficient OAM data volume through selective population of fixed-byte fields rather than requiring complete filling of all possible data slots.
Data Source
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AI summary
A method for performing in-band operations, administration, and management (OAM) using fixed bytes. According to one aspect, data packets are selected from a packet flow according to a sampling rate. A network device's OAM information is inserted into a fixed length field of each selected packet as a selected packet is processed by the network device.