2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.
01-1
Building a Simple Network
Connecting to an
Ethernet LAN
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-2
Network Interface Card
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-3
Comparing Ethernet Media
Requirements
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-4
Differentiating Between Connections
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-5
1000BASE-T GBIC
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-6
Cisco Fiber-Optic GBICs
Short wavelength (1000BASE-SX)
Long wavelength/long haul (1000BASE-LX/LH)
Extended distance (1000BASE-ZX)
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-7
Unshielded Twisted-Pair Cable
Speed and throughput: 10 to 1000 Mb/s
Average cost per node: Least expensive
Media and connector size: Small
Maximum cable length: Varies
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-8
RJ-45 Connector
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-9
RJ-45 Jack
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-10
Cable 10BASE-T/
100BASE-TX Straight-Through
Pin Label Pin Label
1
2
3
4
5
6
7
8
TX+
TX-
RX+
NC
NC
RX-
NC
NC
1
2
3
4
5
6
7
8
TX+
TX-
RX+
NC
NC
RX-
NC
NC
Straight-Through Cable
Wires on cable ends
are in same order.
UTP Implementation (Straight-Through)
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-11
Cable 10BASE-T or
100BASE-TX Straight-Through Crossover Cable
Some wires on cable
ends are crossed.
Pin Label
Pin Label
1
2
3
4
5
6
7
8
TX+
TX-
RX+
NC
NC
RX-
NC
NC
1
2
3
4
5
6
7
8
TX+
TX-
RX+
NC
NC
RX-
NC
NC
EIA/TIA T568A EIA/TIA T568B
UTP Implementation (Crossover)
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-12
UTP Implementation: Straight-Through vs.
Crossover
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-13
Using Varieties of UTP
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-14
Summary
Also called a LAN adapter, the NIC plugs into a motherboard and
provides a port for connecting to the network.
The MAC address is burned onto each NIC by the manufacturer,
providing a unique, physical network address that permits the
device to participate in the network.
The cable and connector specifications used to support Ethernet
implementations are derived from the EIA/TIA standards body.
The categories of cabling defined for the Ethernet are derived
from the EIA/TIA-568 (SP-2840) Commercial Building
Telecommunications Wiring Standards.
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-15
Summary (Cont.)
UTP cable is a four-pair wire. Each of the eight individual copper
wires in UTP cable is covered by an insulating material, and the
wires in each pair are twisted around each other.
A crossover cable is used to connect between similar devices
(such as switch to switch, router to router, PC to PC, and hub to
hub).
A straight-through cable is used to connect between dissimilar
devices (such as switch to router, switch to PC, hub to router, and
hub to PC).
2007 Cisco Systems, Inc. All rights reserved. ICND1 v1.01-16
