3.2 Connecting Ethernet Media
The DFG48000 Switches are specifically designed to support all standard Ethernet media types
within a single Switch unit. This is accomplished by using a family of different port Modules
which can be individually selected and configured per-port. See Section 2.4 for a description of
the PMs. The various media types supported along with the corresponding IEEE 802.3 and
802.3u standards and connector types are as follows:
IEEE Standard Media Type Max. Distance Port Module Fiber:
DFG48044XEYRC
Ethernet Switch 10/100Mbps 4 Copper, 4 Fiber Ports TRX 20Km SM SC
DFG48044XFYRC
Ethernet Switch 10/100Mbps 4 Copper, 4 Fiber Ports TRX 40Km SM SC
DFG48G022XEYRL
Ethernet Switch 10/100/1000Mbps 2 Copper, 2 Fiber Ports TRX 20Km SM LC
DFG48G024XFYRC
Ethernet Switch 10/100/1000Mbps 2 Copper, 4 Fiber Ports TRX 20Km SM LC
3.2.2 Connecting Fiber Optic SC-type, "Snap-In"
The following procedure applies to installations using a Card (Port Module) PM with SC-type fiber
connectors, i.e., using DFG480XX single-mode. When connecting fiber media to SC connectors,
simply snap on, the two square male connectors into the SC female jacks of the DFG480XX until
it clicks and secures.
3.2.3 Connecting Single-Mode Fiber Optic
When using single-mode fiber cable, be sure to use single-mode fiber port connectors. Single-
mode fiber cable has a smaller diameter than multi-mode fiber cable (9/125 microns for single-
mode, 50/125 or 62.5/125 microns for multi-mode where xx/xx are the diameters of the core
and the core plus the cladding respectively). Single-mode fiber allows full bandwidth at longer
distances, and may be used to connect 10 Mb nodes up to 20 Km. Procedures for multi-mode
fiber applies to single-mode fiber connectors. Follow the steps listed in Section 3.2.2 above.
3.2.4 Connecting Twisted Pair (RJ-45, CAT3, CAT5, Unshielded or Shielded)
The RJ-45 ports of the DFG480XX can be connected to the following two media types: 100BASE-
TX and 10BASE-T. CAT 5 cables should be used when making 100BASE-TX connections. When
the ports are used as 10BASE-T ports, CAT 3 may be used. In either case, the maximum
distance for unshielded twisted pair cabling is 100 meters (328 ft).
Media IEEE Standard Connector
Twisted Pair (CAT 3, 4, 5) 10BASE-T RJ-45
Twisted Pair (CAT 5) 100BASE-TX RJ-45
3.2.5 Connecting Twisted Pair (CAT5E or better, Unshielded or Shielded)
The RJ-45 Gigabit ports of the DFG480XX can be connected to the media types, 1000BASE-T or
CAT 5E or better 100-ohm UTP or shielded twisted pair (STP) balanced cable. The CAT 5E or
better 100-ohm UTP or shielded twisted pair (STP) balanced cable is recommended to use when
making 1000BASE-TX connections. In either case, the maximum distance for unshielded twisted
pair cabling is 100 meters (328 ft). See Section 4.3 for manual Up-Link switch on port 1 of
copper port modules.