Loopporttest - HP StorageWorks MSA 2/8 - SAN Switch Reference Manual

Fabric OS Commands

loopPortTest

Tests the L_port M->M path on a loop.
Synopsis: V3.1.x
loopPortTest [passcount, port_number, payload_pattern,
pattern_width]
Synopsis: V4.1.x
loopporttest [--slot number][-nframes count][-ports
itemlist][-seed payload_pattern][-width pattern_width]
Availability:
Admin
Release
V3.1.x and V4.1.x
Description:
Use this command to verify the functional operation of the switch by sending
frames from port M's transmitter, and looping the frames back using an external
fiber cable, including all the devices on the loop, into port M's receiver. This
exercises all the switch components from the main board to the SFP 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: that is a short
wavelength SFP (switch) port should be 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.
Only one frame is transmitted and received at any one time. The port LEDs flicker
green rapidly while the test is running.
The test method is as follows:
1. Determine which ports are L-ports.
2. Enable ports for cabled loopback mode.
412 Fabric OS Version 3.1.x/4.1.x Reference Guide