Brocade Communications Systems Brocade VDX 8770-4 - Manual (Page 62)

42 Brocade VDX 8770-4 Hardware Reference Manual
53-1002563-02
Determining the status of a power supply
4
Table 11 describes the switch fabric module LED patterns and the recommended actions for those
patterns.
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 9 ). The LED patterns
may temporarily change during POST and other diagnostic tests; for information about how to
interpret the LED patterns, refer to
Table 13 . 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 12 for possible results from this command. You can also use the show system
command.
Figure 9 shows a power supply.
TABLE 11 Switch fabric module LED descriptions
LED purpose Color Status Recommended action
Power No light (LED is off) SFM is not on. Ensure that the SFM is firmly seated
and the on/off switch is turned on
(slider is covering the captive
screw).
Steady green SFM is on. No action required.
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.