HP StorageWorks 2/32 Brocade Fabric OS Command Reference Manual (53-1000240-01 - Page 672

2 Note: Enter commands in lowercase only; mixed case is for readability. spinSilk spinSilk Performs a functional test of internal and external transmit and receive paths. Synopsis spinsilk [-nmegs count][-lb_mode mode][-spd_mode mode][-verbose mode][-ports itemlist] Description Use this command to verify the intended functional operation of the switch, at the selected speed, by configuring the routing hardware so that frames received by port M are retransmitted by way of port N. Likewise, frames received by port N are retransmitted by way of port M. Each port M sends one frame to its partner port N. The partner port N for each port M is determined by the external Fibre Channel cable connections, if present. If self-loopback plugs are used, the system assigns a set of partner ports to optimize test coverage. In this case, it is possible for each port to have up to 10 partner ports rather than a single partner selected by the cables. The cables can connect to any port combination with the condition that the cables and media connected are of the same technology; for instance, a short wavelength media port connects to another short wavelength media port by way of a short wavelength cable, a long wavelength port connects to a long wavelength port, and a copper port connects to a copper port. For the best coverage, use self-loopback plugs, as each port exchanges frames with up to 10 other predetermined ports. Frames are exchanged with a selected port from the ASIC (0-0, 0-1, 0-2, 0-3, and so forth), mirrored the port on next ASIC (0-4, 0-8, and so forth), and mirrored the port on next blade, where applicable (0-16, 0-32, and so forth). An error is reported if there are missing plugs. If you want to use cables instead, the ports connected should be from different ASICs. Ports 0 through 3 belong to ASIC 0, ports 4 through 7 belong to ASIC 1, and so forth. A connection from port 0 to port 15 exercises the transmit path between ASICs. A connection from port 0 to port 3 tests only the internal transmit path in ASIC 0. Note If loopback modes 0 (cable) or 1 (loopback plug, default) are selected, you must have the appropriate termination on all tested ports. If not, the ports without the correct termination do not achieve synchronization and the test fails. The command is supported only on SilkWorm 200E, 3250, 3850, 3900,4100, and 24000 platforms. The frames are transmitted and received continuously in all ports in parallel. The port LEDs flicker green rapidly while the test is running. The test method is as follows: 1. Determine which ports are connected to each other. 2. Enable ports for cabled or self-loopback mode. 3. Configure the routing table such that when port M receives frames, they are routed back to the partner port N, and vice versa. 4. Transmit one frame through port M. The frame used is one of the following: • 2112 bytes of BYTE_LFSR • 1000 bytes of CSPAT • 128 bytes of RANDOM 2-638 Fabric OS Command Reference Manual Publication Number: 53-1000240-01