Enterasys c1g124-24 Benutzerhandbuch

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.

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.

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.