Enterasys Networks C1H124-24 - Manual (Page 28)

100BASE-TX Twisted-Pair Network
2-2 Network Requirements
2.2 100BASE-TX TWISTED-PAIR NETWORK
When connecting a 100BASE-TX segment to one of the fixed ports (1 through 48), or to an optional
Ethernet expansion module, use Category 5 UTP cabling. The device at the other end of the twisted
pair segment must meet IEEE 802.3-2002 100BASE-TX Fast Ethernet network requirements for
the devices to operate at 100 Mbps.
2.3 1000BASE-FX SINGLE-MODE AND MULTIMODE FIBER-OPTIC
NETWORK
Mini-GBIC port sockets (50 and 52 on C1H124-48, or 21 through 24 on C1G124-24) enable you
to vary the type of 1-Gbps port connection. At the printing of this document there were three
Mini-GBICs available that support one of the following:
• 1000BASE-SX compliant LC fiber-optic multimode port connection
• 1000BASE-LX compliant LC fiber-optic single-mode port connection
• 1000BASE-SX compliant MT-RJ fiber-optic multimode port connection
The device at the other end of the fiber-optic connection must meet the same 1-Gigabit Ethernet
requirements for the connected devices to operate at Gigabit speed.
2.4 1000BASE-T TWISTED-PAIR NETWORK
When connecting a 1000BASE-T segment to one of the RJ45 fixed ports (49 and 51) or to an
optional Ethernet expansion module that supports 1000BASE-T, use Category 5 UTP cabling. The
device at the other end of the twisted pair segment must meet IEEE 802.3-2002 1000BASE-T
Gigabit Ethernet network requirements for the devices to operate at 1000 Mbps.
NOTE: The fixed ports of the device support Category 5 UTP cabling with an
impedance between 85 and 111 ohms for 100 Mbps operation.
The device is capable of operating at either 10 or 100 Mbps. The device automatically
senses the speed of the other device and adjusts its speed accordingly when
Auto-Negotiation is enabled.