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Creating correctly tagged router subinterfaces with each VLAN gateway address would not correct EIGRP metric-related interface parameters under the approved routing design.

Enforcing symmetric translated session routing or supported state synchronization would not correct EIGRP metric-related interface parameters under the approved routing design.

Adjusting intended administrative preferences or remove the unwanted static route would not correct EIGRP metric-related interface parameters under the approved routing design.

Per-VLAN tags and gateway success demonstrate inter-VLAN routing. It does not review successor routes and metrics after correction.

Stateful firewalls can distinguish permitted connection initiation from return traffic. It does not review successor routes and metrics after correction.

IP routing depends on a route to the destination prefix and a reachable next hop. It does not review successor routes and metrics after correction.

VLAN membership and 802.1Q tagging determine which Layer 2 broadcast domain carries each frame. That does not establish configured metrics do not describe the intended path cost.

Stateful NAT requires return traffic to match its stored flow mapping. That does not establish configured metrics do not describe the intended path cost.

Route source preference precedes path metric when prefixes match. That does not establish configured metrics do not describe the intended path cost.

Adding an approved 0.0.0.0/0 default route to the border gateway would not enforce symmetric translated session routing or supported state synchronization.

Correcting EIGRP metric-related interface parameters under the approved routing design would not enforce symmetric translated session routing or supported state synchronization.

Using source port address translation with unique session port mappings would not enforce symmetric translated session routing or supported state synchronization.

The first routed hop confirms default forwarding. That check cannot demonstrate the defined inbound-versus-return session policy.

Open simultaneous outbound sessions from two internal hosts and inspect translations. That check cannot demonstrate the defined inbound-versus-return session policy.

Expected successor choice validates the metric correction. That check cannot demonstrate the defined inbound-versus-return session policy.

Communication between different IP subnets requires a routed interface or gateway rather than Layer 2 bridging alone. The missing change involves the return path lacks the original translation state.

NAT rewrites connection addresses or ports according to an explicit translation rule. That does not establish the authorized proxy forwarding path.

Configured metrics do not describe the intended path cost. That does not establish the authorized proxy forwarding path.

Configuring compatible LACP port channels on both ends would not assign the port to the approved data VLAN and retain separate voice configuration.

Permitting VLAN 40 on the correct 802.1Q trunk endpoints would not assign the port to the approved data VLAN and retain separate voice configuration.

Restoring spanning-tree protection and removing the accidental redundant loop would not assign the port to the approved data VLAN and retain separate voice configuration.

That test concerns 802.1q tagged trunk rather than the specific reported condition. Correct VLAN and subnet address confirm access membership.

Verify bundled-member state and traffic redistribution on link failure. That check cannot demonstrate successful client IP addressing from the correct scope.

Stable topology and counters demonstrate loop suppression. That check cannot demonstrate successful client IP addressing from the correct scope.

LACP forms a logical link only when partner identities and member parameters agree. The missing change involves the access port is in the wrong VLAN.

An SVI provides a Layer 3 interface for a switch VLAN.

A Layer 2 loop exists without effective STP control. That does not establish correct switch VLAN and trunk classification.

Enforcing scoped routed ACLs blocking guest-to-payroll flows while permitting approved staff would not permit VLAN 40 on the correct 802.1Q trunk endpoints.

Restoring spanning-tree protection and removing the accidental redundant loop would not permit VLAN 40 on the correct 802.1Q trunk endpoints.

Assigning the port to the approved data VLAN and retaining separate voice configuration would not permit VLAN 40 on the correct 802.1Q trunk endpoints.

Correct VLAN and subnet address confirm access membership. That check cannot demonstrate correct switch VLAN and trunk classification.

Stable topology and counters demonstrate loop suppression. That check cannot demonstrate correct switch VLAN and trunk classification.

Positive and negative paths confirm routed ACL effect. That check cannot demonstrate correct switch VLAN and trunk classification.