HP StorageWorks MSA 2/8 - SAN Switch Reference Manual page 165

V3.1.x: SwitchEnable and SwitchDisabled Mode /
V4.1.x: SwitchOnline and SwitchOffline Mode
The crossPortTest command can be executed when the switch is
enabled/online or disabled/offline.
In SwitchEnabled/SwitchOnline mode (where the switch is enabled prior to
executing the crossPortTest command) only ports which are cable
loopbacked to ports in the same switch are tested. Ports connected outside of the
switch are ignored.
To run the crossPortTest command successfully the test must find at least
one port (lb_mode = 1, this is the default) or two ports (lb_mode = 0) cable
loopbacked to each other. If this criteria is not met, one of the following messages
is displayed:
In SwitchDisabled/SwitchOffline mode (when the switch is disabled prior to
executing the crossPortTest command) all ports are assumed to be cable
loopbacked to different ports in the same switch. If one or more ports are not
connected, the test aborts.
The test determines which port is connected to which port transmitting frames. If
any ports are not properly connected (improperly seated SFPs or cables, bad SFPs
or cables, or improper connection or improper connection of SWL to LWL), the
following message is displayed:
V3.1.x: singlePortAlso Mode
The singlePortAlso mode is specified by executing crossporttest
command with the singleportalso operand specified as a value of 1. For
example:
In this mode, crossporttest enables a port to be cable loopbacked to itself
(port M is connected to port M) in addition to the cross connection supported (port
M is connected to port N). This can be used to isolate bad ports.
Fabric OS Version 3.1.x/4.1.x Reference Guide
Need at least one port(s) connected to run this test
Need at least two port(s) cross-connected to run this test
One or more ports is not active, please double check fibres on
all ports.
switch:admin> crossporttest 100, 1
crossPortTest
165