Signal Route Through the Switch

By combining the information from Understanding Signal Routing Through the Switch, it is possible to determine a route through the switch. This topic describes a sample situation that might occur.

1. A route is initiated at line card LC 6, connector 2A. The left LED blinks.

2. Using CXP Connectors and LEDs to Line Card Switch Chip and Port Routes, it is determined that the link routes to I4 switch chip 0, through port 35.

3. The Subnet Manager instructs I4 switch chip 0 to use port 4 to forward the link.

4. Using Line Card Switch Chip to Line Card XBOW Connector Routes, it is determined that the link routes to XBOW connector 7, port 1.

5. The link leaves line card LC 6 and enters fabric card FC 7 at XBOW connector 6, port 1.

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   Note - At line card-midplane-fabric card XBOW connector interface, the port remains the same.

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6. Using Fabric Card XBOW Connector to Fabric Card Switch Chip Routes, it is determined that the link routes to I4 switch chip 0, through port 12.

7. The Subnet Manager instructs I4 switch chip 0 to use port 22 to forward the link.

8. Using Fabric Card Switch Chip to Fabric Card XBOW Connector Routes, it is determined that the link routes to XBOW connector 1, port 1.

9. The link leaves fabric card FC 7 and enters line card LC 1 at XBOW connector 7 port 1.

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   Note - At fabric card-midplane-line card XBOW connector interface, the port remains the same.

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10. Using Line Card XBOW Connector to Line Card Switch Chip Routes, it is determined that the link routes to I4 switch chip 0, through port 4.

11. The Subnet Manager instructs I4 switch chip 0 to use port 24 to forward the link.

12. Using Line Card Switch Chip and Port to CXP Connector and LED Routes, it is determined that the link exits line card LC 1 at connector 0B. The right LED blinks.

Related Information

• Display a Route Through the Fabric

• Perform Comprehensive Diagnostics for a Route