7-8
Software Configuration Guide—Release 12.2(25)SG
OL-7659-03
Chapter7 Environmental Monitoring and Power Management
Power Management
M MAC addresses Hw Fw Sw Status
--+--------------------------------+---+------------+----------------+---------
1 005c.9d1a.f9d0 to 005c.9d1a.f9df 0.5 12.1(11br)EW 12.1(20020313:00 Ok
2 0010.7bab.9920 to 0010.7bab.9925 0.2 Ok
3 0050.7356.2b36 to 0050.7356.2b47 1.0 Ok
5 0001.64fe.a930 to 0001.64fe.a95f 0.0 PwrDeny
6 0050.0f10.28b0 to 0050.0f10.28df 1.0 Ok
Switch#
Configuring Redundant Mode on a Catalyst 4500 Series Switch
By default, the power supplies in a Catalyst 4500 series switch are set to operate in redundant mode. To
effectively use redundant mode, follow these guidelines:
•Use two power supplies of the same type.
•If you have the power management mode set to redundant mode and only one power supply
installed, your switch will accept the configuration but operates without redundancy.
Caution If you have power supplies with different types or different wattages installed in your switch, the switch
will not recognize one of the power supplies and will not have power redundancy.
•For fixed power supplies, choose a power supply that by itself is powerful enough to support the
switch configuration.
•For variable power supplies, choose a power supply that provides enough power so that the chassis
and PoE requirements are less than the maximum available power. Variable power supplies
automatically adjust the power resources at startup to accommodate the chassis and PoE
requirements. Modules are brought up first, followed by IP phones.
•The maximum available power for chassis and PoE for each power supply are listed in Table 7-3 on
page 7-12.
To configure redundant mode on your Catalyst 4500 series switch, perform this task:
Note The power redundancy-mode redundant command is not supported on a Catalyst 4006 switch.
The following example shows how to set the power management mode to redundant mode.
Switch (config)# power redundancy-mode redundant
Switch (config)# end
Switch#
Command Purpose
Step1 Switch# configure terminal Enters configuration mode.
Step2 Switch(config)# power redundancy-mode redundant Sets the power management mode to
redundant mode.
Step3 Switch(config)# end Exits configuration mode.
Step4 Switch# show power supplies Verifies the power redundancy mode for
the switch.