Centralized VOQ Chassis Architecture HLD#2392
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Signed-off-by: Huan V. Le <mr.huanle@gmail.com>
Signed-off-by: Huan V. Le <mr.huanle@gmail.com>
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Quote Mermaid labels containing database@ so GitHub can render the HLD diagrams, and update the revision metadata for the formatting fix. Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
This PR adds a High-Level Design for a centralized SONiC VOQ chassis architecture.
The design describes a chassis mode where the Route Processor / Supervisor hosts the chassis-wide control plane and management services, while line cards focus on data-plane functions such as orchagent, syncd, SAI, and ASIC programming. It introduces a centralized service placement model using database-central for chassis-wide CONFIG_DB, APPL_DB, and STATE_DB, plus swss-central to process central configuration and distribute APPL state to line-card orchagent instances.
The HLD also covers:
The presentation completes on April 1, 2026.
Included Documents
Test Plan