CSMA/CD, time slots are extremely important. Remember that in 10BaseT
and 100BaseT, the time slots were 512-bit times. However, this is not feasi-
ble for Gigabit because the time slot would be only 20 meters in length. To
make Gigabit useable on a network, the time slots were extended to 512 bytes
(4096-bit times!). However, the operation of full-duplex Ethernet was not
changed at all. Table 2.2 compares the new Gigabit Ethernet technologies.
which is set based. The Catalyst 1900 switch can now use a command-line
interface (CLI) and the Cisco Internetworking Operating System (IOS) runs
on the switch. This makes configuring the switch very similar to how you
would configure a router. The 5000 series is still set based, which means you
use the command set to configure the router. Throughout the rest of this
book, we'll show you commands on both types of switches.
wiring, UTP
core, uses a 780-nanometer
laser
a 9-micron core, 1300-
nanometer laser