The VIP configured with two FE-TX port adapters provides up to two 100-Mbps, 100BASE-T, Fast
Ethernet interfaces. Each 100BASE-T port on the FE-TX port adapter has an RJ-45 connector to
attach to Category 5 unshielded twisted-pair (UTP) for 100BASE-TX, and a MII connector that
permits connection through external transceivers to multimode fiber for 100BASE-FX, or to
Category 3, 4, and 5 UTP or shielded twisted-pair (STP) for 100BASE-T4 physical media. Both
full-duplex and half-duplex operation are supported.The term Ethernet is commonly used for all
carrier sense multiple access/collision detection (CSMA/CD), local-area networks (LANs) that
generally conform to Ethernet specifications, including IEEE 802.3u.

Note

100BASE-TX is intended for Environment A and 100BASE-FX is intended for

Environment B.

IEEE 802.3u is well suited to applications where a local communication medium must carry
sporadic, occasionally heavy traffic at high peak data rates. Stations on a CSMA/CD LAN can access
the network at any time. Before sending data, the station listens to the network to see if it is already
in use. If it is, the station waits until the network is not in use, then transmits; this is half-duplex
operation. A collision occurs when two stations listen for network traffic, hear none, and transmit
very close to simultaneously. When this happens, both transmissions are damaged, and the stations
must retransmit.

H4495

ENABLED

MII

LINK

RJ45

FAST ETHERNET