288 Command Reference
test port
Description Tests individual ports using an offline or online test.
Authority Admin session
Syntax
test port [port_number]
offline [loopback_type]
online
Operands
[port_number]
The port to be tested. [port_number] can be 0–19.
offline [loopback_type]
Performs an offline test of the type given by [loopback_type] on the port given by [port_number].
Use the set port command to place the port in the diagnostics state before running the test.
Table 68 describes the offline port test parameters.
Table 68 Offline port loopback types
Parameter Description
internal Exercises the internal port connections
external Exercises the port and its transceiver. A transceiver with a loopback plug is
required for the port.
online
Exercises the port, transceiver, and device connections while the port is online. Online testing of
TR_Ports is not allowed. This test does not disrupt communication on the port.
Notes To cancel a port test that is in progress, enter the test cancel port command.
To display the status of the most recent port test or port test in progress, enter the test status
port command.
Table 69 describes the port test parameters.
Table 69 Port test parameters
Parameter Description
LoopCount Number of frames sent: 1–4294967295. The default is 100.
FrameSize Number of bytes in each test frame: 40–2148. The default is 256.
DataPattern 32-bit hexadecimal test value, or default, which defines random data
StopOnError Stops the test when an error occurs (True). Otherwise, the test continues to
completion.
LoopForever Restarts the test after completion and continues until you cancel it (True).
Otherwise, the test ends normally after completion.
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