Reflective Relay Processing on Logical Ports for EVB Channelized Links
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Solution Overview
Problem
Edge Virtual Bridging (EVB) systems face challenges in supporting reflective relay (RR) capability per channel, especially in VEPA mode, where packets need to be returned to the original device, as existing solutions do not effectively negotiate and implement RR on a per-channel basis.
Innovation Solution
The implementation of RR processing on logical ports for channelized links in EVB systems, where RR capability per channel is negotiated between a server and a physical switch using RR setting information per channel, allowing both VEB and VEPA modes to operate on the same port of a physical switch, and supporting RR per channel on the physical switch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RR capability is negotiated per channel in EVB systems, then packet return and management efficiency is improved, but system complexity increases due to per-channel negotiation and configuration
Solution Approach 1:
The patent divides the reflective relay capability into per-channel basis rather than per-port basis. Each service channel (S-channel) can independently negotiate and enable RR capability, allowing granular control over which channels support packet return functionality. This segmentation resolves the contradiction by enabling efficient per-channel packet management while maintaining manageable complexity through modular configuration.
Solution Approach 2:
The patent implements dynamic RR capability negotiation between the server and physical switch for each S-channel. The RR capability is not statically configured but dynamically negotiated and enabled/disabled per channel based on operational needs. This dynamic approach improves packet return efficiency by enabling RR only where needed while reducing overall system complexity compared to universal enablement.
2Adaptability or versatility
If both VEB and VEPA modes operate on the same port, then mode versatility is improved, but configuration complexity increases due to mode coexistence requirements
Solution Approach 1:
The patent segments the port functionality by introducing service channels (S-channels) that can be individually assigned to VEB or VEPA modes. Instead of requiring the entire port to operate in a single mode, different S-channels on the same port can support different operational modes. This allows versatile mode coexistence while simplifying configuration by isolating mode-specific settings to individual channels rather than managing complex port-level mode switching.
Solution Approach 2:
The physical switch port is designed to universally support both VEB and VEPA modes through the S-channel architecture. The same physical infrastructure can serve multiple functional purposes simultaneously, with each S-channel configured for its specific mode requirements. This multi-functionality approach enables mode versatility without proportionally increasing configuration complexity, as the underlying port management remains unified.
3Measurement precision
If RR is supported per channel using per-channel setting information, then packet management precision is improved, but information processing overhead increases
Solution Approach 1:
The patent implements per-channel RR setting information storage and processing, where each service channel maintains its own RR configuration and status independently. This local quality approach allows precise packet management decisions to be made at the channel level based on channel-specific settings, improving packet management precision while minimizing information processing overhead by only processing RR-related information for the specific channel being handled rather than analyzing all channels.
Data Source
AI summary
Embodiments of the invention relate to reflective relay (RR) processing on logical ports for channelized links in edge virtual bridging (EVB) systems. One embodiment includes providing a virtual edge bridge (VEB) mode and a virtual Ethernet port aggregator (VEPA) mode in an EVB system on a same port of a physical switch. RR capability per channel is negotiated between a server and the physical switch in the EVB system. RR per channel is supported on the physical switch of the EVB system using RR setting information per channel.