HP StorageWorks MSA 2/8 HP StorageWorks Fabric OS V3.1.x/4.1.x Reference Guide - Page 620

Fabric OS Commands porttest Functional test of a switch in a live fabric. Synopsis: V3.1.x porttest [ports, iteration, delay, timeout, pattern, patsize, seed] Synopsis: V4.1.x porttest [-ports itemlist][-iteration count] [-userdelay time][-timeout time][-pattern pattern] [-patsize size][-seed seed][-listtype porttype] Availability Admin Release V3.1.x and V4.1.x Description Use this command to isolate problems to a single replaceable element and isolate problems to near-end terminal equipment, far-end terminal equipment, or transmission line. Diagnostics can be executed every day, and also on demand to troubleshoot a failure. This command verifies the intended functional operation of the switch by sending frames from port M's transmitter, and looping the frames back via an external fiber cable into port M's receiver; thus exercising all the switch components from the main board to the GBIC to the fiber cable to the SFPs (of the devices and the switch) and back to the main board. The cables and SFPs connected should be of the same technology: meaning a short wavelength SFP (switch) port is connected to another short wavelength SFP (device) port using a short wavelength cable; and a long wavelength port is connected to a long wavelength port; and a copper port is connected to a copper port. 620 Fabric OS Version 3.1.x/4.1.x Reference Guide