Chapter 3. Using And Maintaining The Switch; Interpreting Leds; Leds On The Port Side Of The Switch; Port Side Leds - IBM System Storage SAN32B-E4 Installation, Service And User Manual

Chapter 3. Using and maintaining the switch

This chapter provides information about operating and maintaining the switch and
includes these topics.
v "Interpreting LEDs"
v "Interpreting POST results" on page 34
v "Diagnostic testing" on page 35
v "Checking the FRUs" on page 36

Interpreting LEDs

System activity and status can be determined through the activity of the LEDs on
the switch. There are three possible LED states: no light, a steady light, and a
flashing light. The lights are green or a combination of green and amber.
Note: The LEDs may flash during boot, POST, or other diagnostic tests. This is

LEDs on the port side of the switch

The port side of the switch has the following LEDs (see Figure 15).
v One system status LED (above) on the left side
v One system power LED (below) on the left side
v One Ethernet link LED at the Ethernet management port
v One Ethernet activity LED at the Ethernet management port
v One link LED at each GE port
v One activity LED at each GE port
v One port status LED for each Fibre Channel port
Figure 15 shows the LEDs on port side of the switch.
Figure 15. Port side LEDs
(green)
© Copyright IBM Corp. 2010
normal and does not indicate a problem.
1
2
3
4 3 4 5 6
1 System status LED (amber)
2 System power LED (green)
3 GE (cluster Ethernet) link LED (green)
4 GE (cluster Ethernet) activity LED
7
5 Ethernet link LED (green)
6 Ethernet activity LED (green)
7 Port status LED (green/amber, shown for
port 5)
31