Brocade Fabric OS Command Reference Manual Supporting Fabric OS v6.4.0 (53-1001764-01, March 2010)

Fabric OS Command Reference 731
53-1001764-01
portLoopbackTest
2
Notes Do not abort this test prematurely, using CTRL-C or q to quit. Doing so may cause the test to report
unexpected errors.
This command does not support High Availability (HA).
The Brocade DCX series cannot negotiate speeds of 1 Gbps.
The switch must be disabled before you can run this diagnostics.
The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may
be in place. Refer to chapter 1, "Using Fabric OS commands" and Appendix A, "Command
Availability" for details.
Operands This command has the following operands:
--slot slot Specifies the number of the slot on which to run the diagnostics. All eligible
ports relative to the slot number are tested. The default is 0 and designed to
operate on fixed-port-count products.
-nframes count Specifies the number of frames to send. The test progresses until the
specified number of frames has been transmitted on each port. The default
value is 10.
-lb_mode mode Specifies the loopback mode for the test. By default, this test uses the
internal loopback. Valid values depend on the platform on which the
command is executed. Unsupported values are rejected with an appropriate
message.
1 Port Loopback (loopback plugs)
2 External (SERDES) loopback
5 Internal (parallel) loopback
7 Backend bypass & port loopback
8 Backend bypass & SERDES loopback (supported only on a chassis)
-spd_mode mode Specifies the speed mode for the test. This parameter controls the speed at
which each port is operated.
0 Runs test at 1 Gbps, 2 Gbps, and 4 Gbps.
1 Runs test at 1 Gbps.
2 Runs test at 2 Gbps.
4 Runs test at 4 Gbps (Default for 4 G platforms).
8 Runs test at 8 Gbps (Default for 8 G platforms).
-ports itemlist Specifies a list of blade ports to test. By default, all of the blade ports in the
specified slot (--slot) are used. See itemList for more information on the
itemlist parameter.
Examples To run a functional test in default mode:
switch:admin> portloopbacktest
Running portloopbacktest ..............
PASSED.