Technical data

52 Brocade VDX 8770-4 Hardware Reference Manual

53-1002563-05

Determining the status of a power supply

Complete the following steps to determine the status of a power supply.

1. Check the alarm LED labeled ALM on the power supply (refer to Figure 17). The LED patterns

may temporarily change during POST and other diagnostic tests; for information about how to

interpret the LED patterns, refer to Table 14. The Brocade VDX 8770-4 can have up to four

power supplies. Be sure to check each module.

2. Check the power supply status by entering show environment power {rbridge-id rbridge-id}.

Refer to Table 13 for possible results from this command. You can also use the show system

command.

Figure 17 shows a power supply.

FIGURE 17 Power supply

Status LED No light (LED is off) SFM is healthy or is not

powered on.

Verify that the power LED is on.

Steady amber SFM is faulty. Ensure that the SFM is firmly seated

and check the status by entering

the show slot command. If the LED

remains amber, consult the

Brocade switch supplier.

Slow flashing amber (on 2

seconds, then off 2 seconds)

SFM is not seated correctly

of is faulty.

Pull the SFM out and reseat it. If the

LED remains amber, replace the

module.

Fast flashing amber (on 1/2

second, then off 1/2 second)

Environmental range

exceeded.

Check for the out-of-bounds

environmental condition and

correct it.

TABLE 12 Switch fabric module LED descriptions (Continued)

LED purpose Color Status Recommended action

1 AC power input LED (AC OK) 3 Alarm LED (ALM)

2 DC power output LED (DC OK)