True resilience removes shared failure points. Review carrier networks, physical routes, building entry, power, routing equipment, addressing, monitoring and the regular testing of failover.
Find the shared failure before buying the second line
Two services can still share an exchange, duct, building entry, router, switch or power supply. Document the path from each carrier through the security edge to the critical application. The useful question is not whether two circuits exist; it is which realistic failures the complete design can survive.
- Carrier and access-network diversity
- Physical route and building-entry separation
- Independent power and suitable routing equipment
- Addressing, firewall state and application-session behaviour
Make failover observable and testable
Automatic routing should protect agreed priority traffic without making a fault invisible. Monitoring needs to show which path is active, whether the backup has enough capacity and when the primary has recovered. Schedule realistic tests and record the result so business-continuity plans are based on evidence.
Prepare for a useful design conversation
Bring evidence rather than a preferred product model. A short discovery call is more productive when it covers the sites, users, applications and operational consequences involved. Existing diagrams, circuit details, recent fault patterns and realistic growth expectations help distinguish a capacity problem from a coverage, configuration, resilience or support problem.
- Sites, opening hours and important business periods
- Current services, equipment and known constraints
- Critical applications and the impact of interruption
- Internal owners, support expectations, budget range and target date
Turn the requirement into a design
Liberty-i will use that context to identify dependencies, explain realistic options and record the assumptions that affect cost or delivery. The result should be a supportable design with clear ownership, acceptance tests and next steps—not simply a shopping list.