22INSTALLING THE SWITCH

Using SFP Tranceivers

The following sections describe how to insert an SFP transceiver into an SFP slot.

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 list of approved SFP transceivers is correct at the time of publication:

3CSFP91 SFP (SX)

3CSFP92 SFP (LX)

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

http://www.3Com.com

3Com recommends using 3Com SFPs in the Switch. If you insert an SFP transceiver that is not supported, the Switch will not recognize it.

Inserting an SFP Transceiver

To be recognized as valid, the SFP transceiver must have the following characteristics:

1000BASE-SX or 1000BASE-LX media type:

1000BASE-SX SFP transceiver

Use this transceiver to connect the Switch directly to a multimode fiber-optic cable.

1000BASE-LX SFP transceiver

Use this transceiver to connect the Switch directly to a single mode fiber-optic cable or to multi- mode fiber using a conditioned launch cable.

If the SFP transceiver is faulty, it will not operate within the Switch. See “Troubleshooting” on page 75.

To activate the SFP port:

1Hold the transceiver so that the fiber connector is toward you and the product label is visible, as shown in Figure 5. Ensure the wire release lever is closed (in the upright position).

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3Com 2250-SFP, 2226-SFP, 2426-PWR manual Using SFP Tranceivers, Approved SFP Transceivers, Inserting an SFP Transceiver