Network Port Sub-Ports for Non-Standard Link Rates
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Solution Overview
Problem
Current network communication systems face inefficiencies in configuring ports to operate at non-standard link rates, such as 25 G, 50 G, and 75 G, which are not supported by existing Ethernet standards, limiting flexibility and bandwidth utilization in cloud computing environments.
Innovation Solution
The system allows ports to be configured to operate at these non-standard link rates by using a time-shared crossbar and independent sub-ports, with dedicated and shared logic for FEC handling and PCS configuration, enabling flexible operation as Fibre Channel, FCoE, or Ethernet ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ports are configured to operate at non-standard link rates (25 G, 50 G, 75 G), then bandwidth utilization and network performance are improved, but device complexity increases due to requiring dedicated and shared logic for FEC handling and PCS configuration
Solution Approach 1:
The port is divided into independent sub-ports that can operate at different link rates simultaneously. Each sub-port has dedicated FEC handling logic, allowing the system to segment the data transmission path and configure different rates for different sub-ports without affecting the entire port, thus achieving high bandwidth utilization while managing complexity through modularization.
Solution Approach 2:
The time-shared crossbar architecture allows a single physical port to serve multiple functions by time-multiplexing different sub-ports. The shared logic for FEC handling and PCS configuration serves all sub-ports, enabling one port to operate at multiple link rates (25 G, 50 G, 75 G) depending on the configuration, thereby achieving versatility without proportionally increasing hardware complexity.
2Adaptability or versatility
If a time-shared crossbar with independent sub-ports is used, then flexibility in configuring link rates is improved, but device complexity increases due to the need for dedicated and shared logic for FEC handling and PCS configuration
Solution Approach 1:
The system dynamically configures which sub-ports are active and at what link rates based on real-time needs. The time-shared crossbar can dynamically switch between different sub-ports and rate configurations, allowing the port to adapt from 25 G to 75 G operation or any combination thereof, providing flexibility while using a unified hardware architecture.
Solution Approach 2:
The time-shared crossbar acts as an intermediary between the multiple sub-ports and the shared FEC/PCS logic. It coordinates the time-multiplexed access to shared resources, allowing independent configuration of each sub-port while managing the complexity of coordinating multiple rate configurations through a centralized switching mechanism.
3Reliability
If dedicated and shared logic for FEC handling is implemented, then reliability of data transmission is improved, but device complexity increases
Solution Approach 1:
Each sub-port has dedicated FEC handling logic that is optimized for its specific link rate and transmission requirements. This local quality approach ensures that each sub-port receives tailored error correction processing appropriate to its operational parameters, improving reliability for each individual sub-port while the shared logic handles common FEC processing tasks.
Data Source
AI summary
Network device for sending and receiving information is provided. The network device includes a port having a receive segment for receiving information and a transmit segment for transmitting information. The port can be configured to operate as an independent port using a single link operating at 25 gigabits per second.