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Traffic fails over with the appropriate ISP source translation and completes round trips. This would verify resolution of a different case: During an ISP outage drill, an SD-WAN rule fails over but its source NAT still uses the unavailable provider address and the application's return traffic disappears. It does not show that the reported issue was fixed or that its intended action—Correct site scope and deploy the required supported SD-WAN tunnel configuration to the spoke.—worked.

A controlled failover preserves authorized app connectivity through the expected tunnel. This would verify resolution of a different case: A site enables SD-WAN tunnel path switching but the selected tunnel interface is missing the required routing/security configuration. It does not show that the reported issue was fixed or that its intended action—Correct site scope and deploy the required supported SD-WAN tunnel configuration to the spoke.—worked.

Finance test flows use compliant private transport while lower-risk traffic uses broadband. This would verify resolution of a different case: An SD-WAN rule directs all apps to the cheapest broadband even when a finance application requires a documented private transport. It does not show that the reported issue was fixed or that its intended action—Correct site scope and deploy the required supported SD-WAN tunnel configuration to the spoke.—worked.

Explicit path preference can override quality-aware behavior if policy is misconfigured. This mechanism instead explains a separate problem: A branch has a high-quality private link and degraded broadband link, but a hard-coded app route forces voice over broadband despite better available private connectivity. The current incident requires the more directly applicable cause stated by the correct option.

Path distribution must reflect both business priority and network cost. This mechanism instead explains a separate problem: A backup cellular path has a strict data quota but the traffic distribution rule treats it as an equal active link for routine video uploads. The current incident requires the more directly applicable cause stated by the correct option.

SD-WAN path selection does not automatically repair mismatched NAT identity. This mechanism instead explains a separate problem: During an ISP outage drill, an SD-WAN rule fails over but its source NAT still uses the unavailable provider address and the application's return traffic disappears. The current incident requires the more directly applicable cause stated by the correct option.

Perform object visibility checks before multi-folder SD-WAN pushes. That safeguard addresses another potential failure: A new site receives an SD-WAN rule that references a Path Quality profile from another folder, causing validation failure. It is not the most targeted recurring control for the described cause: Successful central push to some targets does not prove the desired spoke received its configuration.

Test loss, latency and jitter independently for each SD-WAN SLA profile. That safeguard addresses another potential failure: A branch health monitor shows packet loss rising above the configured SLA but an engineer expects automatic reroute only when latency and jitter also exceed limits. It is not the most targeted recurring control for the described cause: Successful central push to some targets does not prove the desired spoke received its configuration.

Maintain a policy matrix for application security path requirements. That safeguard addresses another potential failure: An SD-WAN rule directs all apps to the cheapest broadband even when a finance application requires a documented private transport. It is not the most targeted recurring control for the described cause: Successful central push to some targets does not prove the desired spoke received its configuration.

Configure appropriate application-specific loss, latency and jitter thresholds in the SD-WAN Path Quality profile. That could address a different issue in the same blueprint area: A branch voice application fails during high jitter on the primary WAN link because its path-quality profile evaluates latency only. It does not directly correct the given incident, whose decisive mechanism is: Path measurement requires reachable probes and coherent transport policy.

Move or recreate the approved profile at the correct supported scope and update the matching SD-WAN policy. That could address a different issue in the same blueprint area: An SD-WAN rule refers to a Path Quality profile that was created in a different folder and is unavailable to the branch firewall. It does not directly correct the given incident, whose decisive mechanism is: Path measurement requires reachable probes and coherent transport policy.

Set a supported traffic distribution policy aligned to bandwidth and business priorities, reserving backup use as appropriate. That could address a different issue in the same blueprint area: An SD-WAN traffic distribution policy round-robins traffic over paths of unequal capacity and overloads a small LTE backup link. It does not directly correct the given incident, whose decisive mechanism is: Path measurement requires reachable probes and coherent transport policy.

The primary carries expected load and the LTE link stays within its approved utilization. This would verify resolution of a different case: An SD-WAN traffic distribution policy round-robins traffic over paths of unequal capacity and overloads a small LTE backup link. It does not show that the reported issue was fixed or that its intended action—Allow the supported health-probe path and verify probe destinations through each transport.—worked.

Test traffic chooses the new ISP transport when it satisfies the application policy. This would verify resolution of a different case: After an ISP migration, the SD-WAN policy still points to the retired interface object and traffic cannot select the new healthy transport. It does not show that the reported issue was fixed or that its intended action—Allow the supported health-probe path and verify probe destinations through each transport.—worked.

Payment test flows use the approved private link while ordinary traffic retains its separate routing policy. This would verify resolution of a different case: A link management rule selects a low-cost Internet path for payment transactions even though their regulated destination must use the private link. It does not show that the reported issue was fixed or that its intended action—Allow the supported health-probe path and verify probe destinations through each transport.—worked.

Equal distribution can disregard physical path capacity and cost constraints. This mechanism instead explains a separate problem: An SD-WAN traffic distribution policy round-robins traffic over paths of unequal capacity and overloads a small LTE backup link. The current incident requires the more directly applicable cause stated by the correct option.

Path-quality thresholds can treat any single breached metric as a disqualifier. This mechanism instead explains a separate problem: A voice path changes even when only packet loss exceeds its threshold, but an engineer expects all three SLA metrics to fail before failover. The current incident requires the more directly applicable cause stated by the correct option.

Saved cloud configuration is not evidence of active data-plane settings on the firewall. This mechanism instead explains a separate problem: A cloud-managed SD-WAN template changes a branch's interface role but was never pushed to the target firewall. The current incident requires the more directly applicable cause stated by the correct option.

Reconcile SD-WAN interface dependencies in carrier cutover checklists. That safeguard addresses another potential failure: After an ISP migration, the SD-WAN policy still points to the retired interface object and traffic cannot select the new healthy transport. It is not the most targeted recurring control for the described cause: Path measurement requires reachable probes and coherent transport policy.

Include target-device effective configuration confirmation after SD-WAN changes. That safeguard addresses another potential failure: A cloud-managed SD-WAN template changes a branch's interface role but was never pushed to the target firewall. It is not the most targeted recurring control for the described cause: Path measurement requires reachable probes and coherent transport policy.

Review transport capacity and cost when selecting traffic distribution profiles. That safeguard addresses another potential failure: An SD-WAN traffic distribution policy round-robins traffic over paths of unequal capacity and overloads a small LTE backup link. It is not the most targeted recurring control for the described cause: Path measurement requires reachable probes and coherent transport policy.

Monitor supported loss quality per path and correct the impaired transport or apply failover. That could address a different issue in the same blueprint area: An administrator configures SD-WAN path quality for business collaboration but ignores one-way packet loss on an underlay that appears operational. It does not directly correct the given incident, whose decisive mechanism is: SD-WAN path selection does not automatically repair mismatched NAT identity.

Correct the profile deployment scope and rule reference within the site folder inheritance. That could address a different issue in the same blueprint area: A new site receives an SD-WAN rule that references a Path Quality profile from another folder, causing validation failure. It does not directly correct the given incident, whose decisive mechanism is: SD-WAN path selection does not automatically repair mismatched NAT identity.

Match the correct App-ID or approved application group in the SD-WAN rule. That could address a different issue in the same blueprint area: An application has a latency SLA but the SD-WAN profile monitors the wrong app category, and no measured degradation causes path change. It does not directly correct the given incident, whose decisive mechanism is: SD-WAN path selection does not automatically repair mismatched NAT identity.

Both paths measure realistically and failover selects the healthy alternative. This would verify resolution of a different case: A branch’s configured SD-WAN SLA uses probe targets reachable only over its primary provider, so the backup is reported degraded even when healthy. It does not show that the reported issue was fixed or that its intended action—Coordinate the alternative path's egress NAT mapping with the selected SD-WAN policy.—worked.

The intended branch has active tunnels and an approved failover path after push. This would verify resolution of a different case: An SD-WAN policy pushes successfully but a new spoke lacks the expected tunnel because template activation targeted only a neighboring site. It does not show that the reported issue was fixed or that its intended action—Coordinate the alternative path's egress NAT mapping with the selected SD-WAN policy.—worked.

A controlled packet-loss test causes selection of a compliant alternate and fewer media gaps. This would verify resolution of a different case: An administrator configures SD-WAN path quality for business collaboration but ignores one-way packet loss on an underlay that appears operational. It does not show that the reported issue was fixed or that its intended action—Coordinate the alternative path's egress NAT mapping with the selected SD-WAN policy.—worked.

An individual quality metric can exceed its threshold without other metrics failing. This mechanism instead explains a separate problem: A branch health monitor shows packet loss rising above the configured SLA but an engineer expects automatic reroute only when latency and jitter also exceed limits. The current incident requires the more directly applicable cause stated by the correct option.

Successful central push to some targets does not prove the desired spoke received its configuration. This mechanism instead explains a separate problem: An SD-WAN policy pushes successfully but a new spoke lacks the expected tunnel because template activation targeted only a neighboring site. The current incident requires the more directly applicable cause stated by the correct option.

A quality profile only affects flows that match its referencing SD-WAN policy. This mechanism instead explains a separate problem: An application has a latency SLA but the SD-WAN profile monitors the wrong app category, and no measured degradation causes path change. The current incident requires the more directly applicable cause stated by the correct option.

Maintain a policy matrix for application security path requirements. That safeguard addresses another potential failure: An SD-WAN rule directs all apps to the cheapest broadband even when a finance application requires a documented private transport. It is not the most targeted recurring control for the described cause: SD-WAN path selection does not automatically repair mismatched NAT identity.

Audit forced-path exceptions against live SLA measurements. That safeguard addresses another potential failure: A branch has a high-quality private link and degraded broadband link, but a hard-coded app route forces voice over broadband despite better available private connectivity. It is not the most targeted recurring control for the described cause: SD-WAN path selection does not automatically repair mismatched NAT identity.

Validate per-application jitter and loss thresholds before SD-WAN cutover. That safeguard addresses another potential failure: An SD-WAN branch voice rule uses a generic path quality threshold suitable for large file transfers, allowing jitter that breaks live calls. It is not the most targeted recurring control for the described cause: SD-WAN path selection does not automatically repair mismatched NAT identity.