HP 2/8q Fibre Channel manual Resetting a port, Testing ports, Select Port Reset Port

Switch Manager

4.Verify Requested Changes—Review the extended distance requests and the selected donor ports. Click Finish to apply the changes, and redistribute the credits.

Note: As credits are used, the Logged-In LEDs on the corresponding donor ports illuminate continuously. In addition, donor port Activity LEDs reflect the same traffic as the recipient port. Donor ports whose credits are being used are unavailable to devices that are connected to them.

Resetting a port

The Reset Port option reinitializes the port using the saved configuration.

1.In the faceplate display, select the port(s) to be reset.

2.Select Port > Reset Port.

Testing ports

The port loopback tests verify correct port operation by sending a frame out through the loop, and then verifying that the frame received matches the frame that was sent. Only one port can be tested at a time for each type of test. The Port Loopback Test dialog box presents the following loopback tests:

■SerDes level (Internal)—The SerDes level test verifies port circuitry. The SerDes level test sends a test frame from the ASIC through the SerDes chip and back to the ASIC for the selected ports. The port passes the test if the frame that was sent by the ASIC matches the test frame that was received. This test requires that the port be in diagnostics mode, and therefore, disrupts communication.

■SFP level (External)—The SFP level test verifies port circuitry. The SFP level test sends a test frame from the ASIC through the SerDes chip, through the SFP transceiver fitted with an external loopback plug, and back to the ASIC for the selected ports. The port passes the test if the test frame that was sent by the ASIC matches the test frame that was received. This test requires that the port be in diagnostics mode, and therefore, disrupts communication.

■Node-to-Node(Online)—The Node-to-Node test verifies communications between the port and its device node or device loop. The port being tested must be online and connected to a remote device. The port passes the test if the frame that was sent by the ASIC matches the frame that was received. This test does not disrupt communication on the selected port. This test requires that the port be online, and therefore, does not disrupt communication.

To run the internal, external, or online port loopback test on a port:

1.In the faceplate display, select the port to be tested, and then select Port > Port Loopback Test. The Port Loopback Test dialog box is displayed (Figure 33).

HP StorageWorks 2/8q Fibre Channel Switch Management User Guide 89