Cisco 4948 - Catalyst Switch Installation Manual page 64
Installation guide
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Also See for 4948 - Catalyst Switch:
- Datasheet (18 pages) ,
- Product bulletin (4 pages) ,
- Datasheet (16 pages)
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Powering Up the Switch
If your chassis has DC-input power supplies installed, follow these steps to power up the chassis:
Verify that the terminal block cover is installed on the power supply correctly and that no bare wires are
Step 1
exposed.
Remove any safety flag and lockout devices or any tape from the source DC circuit breaker switch
Step 2
handle, and restore source DC power by moving the circuit breaker switch handle to the on (|) position.
Note
Verify power supplies are operating correctly by looking at the INPUT OK and the OUTPUT OK LEDs
Step 3
located on the power supply faceplate. The LEDs should be green when the power supply and the power
supply fan are functioning normally.
Step 4
Also verify that the front panel PS1 LED is lit green. If the chassis is equipped with a second (redundant)
power supply, verify that the front panel PS2 LED is also lit green. If the LEDs are not green, refer to
the
"300 W DC-Input Power Supply (PWR-C49-300DC)" section on page A-12
As the switch powers on, it begins the POST, which are a series of tests that run automatically to ensure
that the switch functions properly. The POST lasts approximately 1 minute. After the POST is complete,
the SYSTEM LED should be green. If the switch fails the POST, the SYSTEM LED turns amber.
The port status LEDs on the switch also cycle through several colors during power up.
•
The LED turns amber while the STP feature discovers the network topology and searches for loops.
This process takes about 30 seconds, and then the LED turns green.
The LED turns green when the chassis port and the target device have an established link.
•
If the LED is off, the target device might not be turned on, there might be a cable problem, or there
•
might be a problem with the target device.
Note
The POST failures are usually fatal. Call Cisco Systems if your switch does not pass the POST.
For information on configuring the Catalyst 4948E or the Catalyst 4948E-F switch, refer to the
appropriate software configuration guide at:
http://www.cisco.com/en/US/products/ps6021/products_installation_and_configuration_guides_list.ht
ml
Catalyst 4948E and Catalyst 4948E-F Switch Installation Guide
3-22
The DC-input power supply does not have an on/off switch. Restoring source DC power will
energize the Catalyst 4948E DC-input power supply and power up the chassis.
Chapter 3
Installing the Switch
for LED descriptions.
OL-21561-02
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Troubleshooting
