SMB access slow only from one branch office

Scenario

Users at a single branch experience file share slowness while headquarters remains normal.

Recommended Resolution Path

1. Measure latency, packet loss, and WAN path behavior from the affected branch.
2. Check DNS path and whether the branch resolves to the expected target.
3. Compare traffic during peak backup or sync windows.
4. If the branch has local infrastructure, verify it is not hairpinning unexpectedly.

Technician Notes

Confirm the result, document the root cause, and record any preventative action worth standardizing.