← Back to Insights
Engineering Case File · Networks
Hyperscale Data Center Backbone Modernization
A multi-site backbone modernization program focused on capacity expansion, resiliency, and controlled production migration.
This case file draws on real-world infrastructure work. Identifying details and protected implementation specifics are intentionally excluded.
Challenge
A platform operator needed to increase backbone capacity and reduce failure-domain risk without disrupting production traffic during a phased migration window.
Constraints
- Maintenance windows limited to regional off-peak intervals
- Multi-vendor routing and optical transport in the path
- No tolerance for unplanned production impact during cutover phases
- Operations team required documented rollback at every stage
Approach
- Assessed existing topology, capacity headroom, and failure domains
- Developed phased migration MOPs with pre-check and post-check criteria
- Coordinated optical and routing cutover sequences across sites
- Executed validation testing before each production traffic shift
Engineering Decisions
- Staged migration by failure domain rather than a single big-bang cutover
- Maintained parallel paths during transition for rollback capability
- Standardized acceptance criteria across routing and transport layers
- Embedded operational handoff documentation at each phase gate
Outcome
- Backbone capacity expanded on schedule across targeted sites
- Migration completed without unplanned production impact
- Operations team received validated MOPs and rollback procedures
- Program established a reusable template for subsequent expansions
Discuss a similar infrastructure program
Talk with CelesTech about assessments, deployments, and operational engineering for your environment.
Contact CelesTech