Troubleshooting Power Failures
55
CHAPTER 9: Troubleshooting
Troubleshooting Power Failures
To verify that a power supply is functioning normally:
z
Check the system LED on the front panel. If the green LED is lit steadily, the power source is
providing power and the power supply is functioning normally.
z
Issue the
show chassis power
command to check the status of installed power supplies. As
shown in the sample output, the value of
Power_status
indicates that the power supplies are
functioning normally.
cli@BX7000>
show chassis power
Power
Instance :0 Power_status : ON
Instance :1 Power_status : ON
If a power supply is not functioning normally, do the following to diagnose and correct the problem:
z
If a red alarm occurs, issue the
show chassis alarms
command to determine the source of the
problem. The command displays the chassis and interface conditions that triggered the alarm.
The red alarm indicates a critical situation that needs immediate attention.
z
If the system LED is off and no red alarm condition exists, check if the gateway is connected to a
power supply.
z
Verify that the power cords from the power source to the gateway are not damaged. Replace the
cable if the insulation is cracked or broken.
z
Connect the power supply to a different power source with a new power cable. If the system LED
still does not light, the power supply inlet in the gateway is the source of the problem. Replace the
power supply with a spare.
The gateway’s distributed power system is designed to consume low power. For specifications of
power consumption, see “System Specifications” on page 73. If you suspect a power problem, see
Table 17: Interface Alarm Messages
CLI message
interface-name gige-x/x/x : Link Down
interface-name t1-x/x/x : Loss of Signal
interface-name t1-x/x/x : Alarm Indication Signal
interface-name t1-x/x/x : Loss of Frame
interface-name t1-x/x/x : Framer Yellow Alarm
interface-name t1-x/x/x : BEE
interface-name t1-x/x/x : Bipolar Violation
interface-name t1-x/x/x : Excess Zero
interface-name t1-x/x/x : Line Code Violation
interface-name t1-x/x/x : CS
interface-name t1-x/x/x : RED
Summary of Contents for BX7000
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Page 122: ... 104 Hardware Compliance Copyright 2010 Juniper Networks Inc ...
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Page 133: ...Copyright 2011 Juniper Networks Inc 115 PART 4 Index z Index on page 117 ...