26 CHAPTER 2: INSTALLING THE SWITCH
Table 6 PWR LED Colors
If there is evidence of a problem, see “Solving Problems Indicated by
LEDs” on page 58 for a list of suggested solutions.
CAUTION: The Switch has no ON/OFF switch; the only method of
connecting or disconnecting mains power is by connecting or
disconnecting the power cord.
SFP Operation The following section describes how to insert an SFP transceiver into an
SFP 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
Transceivers
The following Gigabit Ethernet SFP transceivers are currently supported.
■ 3CSFP92 SFP (1000BASE-LX)
■ 3CSFP97 SFP (1000BASE-LH70)
■ 3CSFP93 SFP (1000BASE-T)
To access the latest list of approved SFP transceivers for your switch refer
to the 3com web site at www.3com.com.
Inserting an SFP
Transceiver
The SFP transceiver must have the following characteristics:
■ 1000BASE-LX SFP transceiver
Use this transceiver to connect Gigabit Ethernet SFP ports on the
Switch directly to a single-mode fiber-optic cable or to multimode
fiber using a conditioned launch cable.
■ 1000BASE-LH70 SFP transceiver
Color State
Green The Switch is powered-up and operating normally.
Red The Switch has failed its Power On Self Test (POST).
Yellow flashing Some ports have failed POST
*
* You can still use the remaining ports that have passed the POST.
Off The Switch is not receiving power.
10014914_AB_Switch 4200G.book Page 26 Tuesday, October 2, 2007 12:13 PM
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