3Com 2816-SFP Plus (3C16485) User Manual

Also see for Baseline 2816: Product guide Datasheet Datasheet Datasheet Datasheet

3Com 2816-SFP Plus (3C16485) User Manual Manual pdf 14 page image

Spot ChecksAt frequent intervals you should visually check the Switch.Regular checks can give you an early warning of a possiblefailure; any problems can then be attended to when there will beleast effect on users. Check the following:If you experience any problems operating the Switch, refer to“Problem Solving” on page 41.Connecting to a Network DeviceTo connect a device to the Switch use Category 5 unshielded orshielded (screened) 100 Ohm TP cable (or Category 3 cable for a10 Mbps connection). The maximum length of cable for eachconnection is 100 m (328 ft). Connect one end of the cable toan RJ-45 port on the Switch and the other end to theappropriate RJ-45 port on the connecting device.3Com recommends the use of Category 5e or 6 cables for1000BASE-T operation.SFP OperationThe following sections describe how to insert an SFP transceiverinto an SFP slot.SFP transceivers are hot-insertable and hot-swappable. You canremove them from and insert them into any SFP port withouthaving to power down the Switch.Approved SFP TransceiversThe following list of approved SFP transceivers is correct at thetime of publication:■ 3CSFP91 SFP (SX)■ 3CSFP92 SFP (LX)To access the latest list of approved SFP transceivers for theSwitch on the 3Com Corporation World Wide Web site, enterthis URL into your internet browser:http://www.3com.comInserting an SFP TransceiverTo be recognised as valid, the SFP transceiver must have thefollowing characteristics:■ 1000BASE-SX or 1000BASE-LX media type:■ 1000BASE-SX SFP transceiverUse this transceiver to connect the Switch directly to amultimode fiber-optic cable.■ 1000BASE-LX SFP transceiverUse this transceiver to connect the Switch directly to asingle-mode fiber-optic cable or to multimode fiber usinga conditioned launch cable.If the SFP transceiver is faulty, it will not operate within theSwitch. See “Problem Solving” on page 41.Cabling Check that all external cabling connections are secureand that no cables are pulled taut.Cooling fan Where possible, check that the cooling fan is operatingby listening to the unit. The fan is fitted near to thefront right hand side of the unit (when viewed from thefront).