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August 25, 2025

AWS Global Accelerator Latency: Direct Connect Troubleshooting

15 minutes

Latency spikes in an AWS Global Accelerator setup with Direct Connect are notoriously hard to pin down — this episode walks through a structured troubleshooting approach including VPC Flow Logs analysis.

You'll learn:

How to isolate whether latency originates at the Global Accelerator edge, the Direct Connect path, or inside the VPC

Reading VPC Flow Logs to identify packet loss, retransmits, and asymmetric routing across regions

Using CloudWatch Network Monitor and AWS Health events to correlate inter-region degradation

Common Direct Connect BGP misconfiguration gotchas that cause intermittent spikes rather than full outages

When to escalate to AWS Support with the right data already gathered

Keywords: AWS Global Accelerator troubleshooting, Direct Connect latency, VPC Flow Logs analysis, inter-region latency AWS, BGP misconfiguration AWS

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