Dell PowerEdge M520 Dell 10 Gb Ethernet Pass Through-k  for M1000e So - Page 18

Rev 1.00 Software User's Manual 3.7 Port Commands 3.7.1 set port test (ADMIN) Synopsys: set port test port_number [prbs31 on|off|start|stop] Description: Configure test mode on a port. Test mode is used to measure link quality and calibrate link tuning parameters. • port_number: downlink port number on which to enable / disable test mode • prbs31: industry-standard pseudo-random binary sequence for link tuning - prbs31 on: move the port to test mode - prbs31 start: initalize prbs31 mechanism and start error counting - prbs31 stop: terminate prbs31 error counting - prbs31 off: move the port back to operational mode Note: After "prbs31 on" and before "prbs31 start", configure prbs31 on the remote peer. Example: & set port test 6 prbs31 on & # enable prbs31 on remote peer now & set port test 6 prbs31 start & show port test 6 port 6 prbs31 on: 0 errors & set port test 6 prbs31 stop & set port test 6 prbs31 off 3.7.2 show port link Synopsys: show port link [port_number] Description: This command displays detailed port information. If an uplink port number is specified ([port_number]), then the command displays information only for this port; otherwise, the command displays information for all the ports. The command displays the following information per port: • Port number • Port group identifier and speed: A, B, followed by the configured speed (10G) • Pass through connection status, may have one of the following values: down - either uplink or downlink is not connected 18