# Troubleshoot Direct Connect
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The following troubleshooting information can help you diagnose and fix issues with your Direct Connect connection.

**Contents**
+ [Layer 1 (physical) issues](ts_layer_1.md)
+ [Layer 2 (data link) issues](ts-layer-2.md)
+ [Layer 3/4 (Network/Transport) issues](ts-layer-3.md)
+ [Long ASN issues](ts-long-asn.md)
+ [Routing issues](ts-routing.md)