Brocade Communications Systems Brocade 8/12c Command Reference Manual page 763

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
-nframes count
-lb_mode mode
-spd_mode mode
-ports itemlist
Examples To run a functional test in default mode:
Fabric OS Command Reference
53-1001764-01
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.
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.
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)
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).
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.
switch:admin> portloopbacktest
Running portloopbacktest ..............
PASSED.
portLoopbackTest
2
731