HP StorageWorks MSA 2/8 HP StorageWorks Fabric OS V3.1.x/4.1.x Reference Guide - Page 589

portLoopbackTest -lb_mode mode (V4.1.x only) -spd_mode mode (V4.1.x only) -ports itemlist (V4.1.x only) Specify the loopback mode for the test. By default, this test uses internal loopback. Valid values are as follows: 1 Port Loopback (loopback plugs) 2 External (SERDES) loopback 5 Internal (parallel) loopback Specify the speed mode for the test. For 1 Gbit/sec only products it is ignored. The exact operation of modes 3 through 6 depends upon the loopback mode selected. When speed modes 3 through 6 are used with cables, they must be connected EVEN to ODD or the test will fail. ■ 0: set all ports' speed for auto-negotiate. ■ 1: set all ports' speed to lock at 1 Gbit/sec. ■ 2: set all port's speed to lock at 2 Gbit/sec. For lb_mode == 0,1 the following speed modes are available to test the speed negotiation: ■ 3: set all even ports' speed for auto-negotiate, set all odd ports' speed for 1 Gbit/sec. ■ 4: set all even ports' speed for auto-negotiate, set all odd ports' speed for 2 Gbit/sec. ■ 5: set all odd ports' speed for auto-negotiate, set all even ports' speed for 1 Gbit/sec. ■ 6: set all odd ports' speed for auto-negotiate, set all even ports' speed for 2 Gbit/sec. For lb_mode== 2,3 the following speed modes are available to test fifo underrun. ■ 3,5: set all even ports' speed for 2 Gbit/sec, set all odd ports' speed for 1 Gbit/sec. ■ 4,6: set all even ports' speed for 1 Gbit/sec, set all odd ports' speed for 2 Gbit/sec. Specify a list of user ports to test. By default all of the user ports in the current switch are tested. This option may be used to restrict testing to the specified ports. Fabric OS Version 3.1.x/4.1.x Reference Guide 589