HP STORAGEWORKS A7540-96010 User Manual download pdf (Page 17)

Introduction

17HP StorageWorks 2/8q Fibre Channel Switch Installation Guide

Fibre Channel ports and LEDs

The switch has eight Fibre Channel ports, numbered 0–7. (Figure 4)

Each Fibre Channel port is served by a 2 Gbps Small Form-Factor Pluggable (SFP) optical

transceiver. SFPs are hot-pluggable. User ports self-discover both the port type and

transmission speed of the connected devices. The Fibre Channel port LEDs are located above

their respective ports and provide port log-in and activity status information.

Figure 4: Fibre Channel port and LED locations

Port Logged-in LED (green)

The Logged-in LED indicates the logged-in or initialization status of the connected devices.

After successful completion of the POST, the switch extinguishes all Logged-in LEDs.

Following a successful loop initialization or port login, the switch illuminates the

corresponding logged-in LED. This shows that the port is properly connected and able to

communicate with its attached devices. The Logged-in LED remains illuminated as long as the

port is initialized or logged in. If the port connection is broken or an error occurs that disables

the port, the Logged-in LED flashes. See “Logged-In LED indications” on page 44 for more

information.

Port Activity LED (green)

The Activity LED indicates that data is passing through the port. Each frame that the port

transmits or receives causes this LED to illuminate for 50 milliseconds. This makes it possible

to observe the transmission of a single frame. When extending credits, the Activity LED for a

donor port will reflect the traffic of the recipient port. See “Distance” on page 24 for more

information about extended credits and donor ports.

1 Port Logged-in LED (green)

2 Port Activity LED (green)

3 Fibre Channel port

1 2 3

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 69 70

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HP STORAGEWORKS A7540-96010 User Manual Page 17