Brocade Fabric OS Command Reference Manual Supporting Fabric OS v6.3.0 (53-1001337-01, July 2009)

Fabric OS Command Reference 679
53-1001337-01
portLoopbackTest
2
The Brocade DCX series cannot negotiate speeds of 1 Gbps.
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 number Specifies the slot number on which to run the diagnostics. The ports specified
will be relative to this slot number. 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 are as follows:
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)
9 Backend bypass & internal 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 ..............
Test Complete: portloopbacktest Pass 10 of 10
Duration 0 hr, 0 min & 31 sec (0:0:31:870).
passed.
Diagnostics When it detects failures, the test may report one or more of the following error messages. If errors
persist, contact Technical Support.
DATA Data received does not match the data sent.