HP StorageWorks 8B - FC Entry Switch Reference Manual page 62

1
Telnet Commands
SwitchOnline and SwitchOffline Mode
The crossPortTest command can be executed when the switch is enabled or disabled.
In ONLINE 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 (if
singlePortAlso loopback mode is active) or two ports (if singlePortAlso loopback mode is not
active) cable loopbacked to each other. If this criteria is not met, one of the following message is
displayed:
Need at least one port(s) connected to run this test
(singlePortAlso active)
or:
Need at least two port(s) cross-connected to run this test
(singlePortAlso not active)
In OFFLINE mode (when the switch is disabled prior to executing the crossPortTest command) all
ports are assumed to be cross port cabled 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 GBICs or cables, bad GBICs or cables, or improper
connection), the following message is displayed:
One or more ports is not active, please double check fibres on all
ports.
LoopBack Mode
There are three loopback modes that can be used when executing the crossPortTest command. The
modes are specified by entering:
•
1 for singleportalso loopback mode. This is a port that loops back to itself. A loopback cable
must be used to physically connect the send and receive channels for a single port, before this
operand is specified.
•
2 for external loopback mode. The external loopback test creates a test loop between two ports
on different ASICs and also tests the Serializer Deserializer functionality.
•
5 for internal loopback mode. The internal loopback test creates a test loop between two ports
on a single ASIC.
GBIC (SFP) Mode
Use the setGbicMode command to activate GBIC mode by executing the following command
prior to executing the crossPortTest command:
switch:admin> setGbicMode 1
When activated, only ports with SFPs present are tested by the crossPortTest command. For
example, if only port 0 and port 3 contain GBICs, the crossPortTest command limits testing to port
0 and port 3.
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