SFP Operation 25

When the POST has completed, check the Power On Self Test LED to make sure that your Switch is operating correctly. Table 6 shows possible colors for the LED.

Table 6 Power/Self Test LED colors

Color

State

 

 

Green

The Switch is powered-up and operating normally.

Yellow

The Switch has failed its Power On Self Test.

Off

The Switch is not receiving power.

 

 

 

In addition, check the Unit LEDs on all Switches in the stack. If a Unit LED

 

is off, initialization is not complete. 3Com recommends that you do not

 

use the Switch's management interface until the Unit LED is green.

 

If there is evidence of a problem, see “Solving Problems Indicated by

 

LEDs” on page 54.

 

 

SFP Operation

The following section describes how to insert an SFP transceiver into an

 

SFP port on the Switch 4200 28-Port.

 

SFP transceivers are hot-insertable and hot-swappable. You can remove

 

them from and insert them into any SFP port without having to power

 

down the Switch.

Approved SFP The following list of approved SFP transceivers is correct at the time of Transceivers publication.

3CSFP91 SFP (SX)

3CSFP92 SFP (LX)

3CSFP93 SFP (T)

3CSFP97 SFP (LH)

To access the latest list of approved SFP transceivers for the Switch on the 3Com Corporation World Wide Web site, enter this URL into your internet browser:

http://www.3com.com

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3Com 3 manual SFP Operation, SFP port on the Switch 4200 28-Port, Color State