Perform Loopback Tests; Internal Loopback Test - HP storageworks director 2/140 Service Manual

Repair Information

Perform Loopback Tests

This section describes the procedures to perform an:

Internal Loopback Test

To perform an internal loopback test for a single port or a UPM card (four ports):
1. Notify the customer a disruptive internal loopback test will be performed on a
Note:
blocked, or unblocked.
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Beaconing—The user-specified state for the port (On or Off).
FAN Configuration—The user-configured state for fabric address
notification (FAN) configuration (Enabled or Disabled).
Operational State—The port state ((Online, Offline, Not Installed,
Inactive, Invalid Attachment, Link Reset, No Light, Not Operational,
Port Failure, Segmented E_Port, or Testing).
Reason—A summary displays describing the reason if the port state is
Segmented E_Port, Invalid Attachment, or Inactive. For any other port
state, the reason is N/A.
Technology—Information specific to the installed optical transceiver,
including connector type, transceiver optics, data transmission distance,
optical media (cable type), and transmission speed.
Internal loopback test—An internal loopback test checks UPM card
circuitry, but does not check fiber optic components of a port transceiver. The
test is performed with a device attached to the port, but the test momentarily
blocks the port and is disruptive to the attached device.
External loopback test—An external loopback test checks UPM card
circuitry, including fiber optic components of a port transceiver. To perform
the test, the attached device must be quiesced and disconnected from the port,
and a multi-mode or single-mode loopback plug must be inserted in the port
receptacle.
port or UPM card. Ensure the customer's system administrator quiesces Fibre
Channel frame traffic through the port or UPM card, and sets attached devices
offline.
At the start of the loopback test, the port or UPM card can be online, offline,
Director 2/140 Service Manual