Cisco 6503 - Catalyst Firewall Security Sys Installation Manual page 384
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Power Supply Redundancy
Table A-43
Effects of Power Supply Configuration Changes (continued)
Configuration Change
System is booted with
power supplies of different
wattage installed and
redundancy enabled
System is booted with
power supplies of equal or
different wattage installed
and redundancy disabled
When running redundant 4000 W, 6000 W, or 8700 W power supplies in Catalyst 6506 and
Catalyst 6509 non-E series systems, if you remove the power supply in bay 1, the total system power
will be reduced to 2940 W (70 A at 42 VDC) after 180 seconds (3 minutes). You can avoid this reduction
in the total system power by leaving the power supply in bay 1, even in a powered down state.
If the total system power usage is greater than 2940 W, the following scenario will apply if a 4000 W,
6000 W, or a 8700 W power supply is removed from bay 1 (these scenarios are specific to only these
three power supplies running in redundant mode in either the Catalyst 6506 or Catalyst 6509 non-E
series systems).
•
•
•
•
Catalyst 6500 Series Switches Installation Guide
A-76
Effect
System log and syslog messages are generated.
•
The lower-wattage supply is disabled (Catalyst operating system).
•
For Cisco IOS, both power supplies come on. The total available
•
wattage is the output wattage of the higher wattage power supply.
System log and syslog messages are generated.
•
System power equals the combined power capability of both supplies.
•
The system powers up as many modules as the combined capacity
•
allows.
If the power supplies in bay 1 and bay 2 are running in redundant mode, the total system power will
be 4000 W.
If power supply 1 is running and you power off or remove power supply 2, the total system power
will be 4000 W. The system will issue a normal power supply 2 down/remove indication warning.
If you power down power supply 1 while power supply 2 is operating, the system will issue a normal
power supply 1 down indication warning with another warning asking the user not to remove power
supply 1. If power supply 1 is left in the system, even if it is powered off, the total system power
will be 4000 W.
If you remove power supply 1 from the system, a major alarm will be issued to warn that the total
system power will be reduced to 2940 W and that any modules or PoE devices that cause the system
to exceed 2940 W will power down in 180 seconds (3 minutes). If you insert a replacement power
supply 1 in the 180-second timeframe, no action will be taken.
Appendix A
Power Supply Specifications
OL-5781-08
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Troubleshooting
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