Dell PowerEdge M420 Manuel - Page 18

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Dell PowerEdge M420 Manuel
Rev 1.00
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 parame-
ters.
• 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
After "prbs31 on" and before "prbs31 start", configure prbs31 on the remote peer.
Note:
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 com-
mand 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
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Software User's Manual