Cisco Catalyst 2955 Hardware Installation Manual page 165

Chapter 4 Installation in a Hazardous Environment
If POST completes successfully on the Catalyst 2955C-12 and 2955S-12:
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If POST completes successfully on the Catalyst 2955T-12:
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If POST fails on the Catalyst 2955C-12 and 2955S-12:
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If POST fails on the Catalyst 2955T-12:
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While the switch powers on, the power status LEDs are green or red, showing the
presence or absence of power supplies (see
During POST, the power status LEDs are green. After POST completes
successfully, the power status LEDs are green if both power supplies are
functioning normally and the switch has been configured to operate in dual-power
mode.
If the switch is in single-power mode and only power supply A is present and
functioning, the LED for power supply B is green, and the LED for power supply
A shows its status. If the switch is in single-power mode and only power supply
B is present and functioning, the LED for power supply A is green, and the LED
for power supply B shows its status.
See the switch configuration guide for details on single- and dual-power mode
operation.
On a Catalyst 2950 switch, you can use the MODE button to recover the switch
password. The Catalyst 2955 switch has no MODE button, so the boot loader
compensates by using break key detection to stop the automatic boot sequence for
password recovery.
78-14944-03
Uplink port 13 LED turns green.
Uplink port 14 LED goes off during the flash file system initialization.
Uplink port 1 LED turns green.
Uplink port 2 LED goes off during the flash file system initialization.
Uplink port 13 LED blinks amber.
Uplink port 14 LED turns green.
Uplink port 1 LED blinks amber.
Uplink port 2 LED turns green.
Verifying Switch Operation
Table 2-1 on page 2-13
Catalyst 2955 Hardware Installation Guide
for details).
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