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Inside Twisted Pair Cables, C-4 - wg602 as repeater

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User's Guide for the WG602 v3 54 Mbps Wireless Access Point Inside Twisted Pair Cables For two devices to communicate, the transmitter of each device must be connected to the receiver of the other device. The crossover function is usually implemented internally as part of the circuitry in the device. Computers and workstation adapter cards are usually media-dependent interface ports, called MDI or uplink ports. Most repeaters and switch ports are configured as media-dependent interfaces with built-in crossover ports, called MDI-X or normal ports. Auto Uplink technology automatically senses which connection, MDI or MDI-X, is needed and makes the right connection. Figure C-4 illustrates straight-through twisted pair cable. Figure C-4: Straight-Through Twisted-Pair Cable Figure C-5 illustrates crossover twisted pair cable. Figure C-5: Crossover Twisted-Pair Cable Network, Routing, Firewall, and Cabling Basics 202-10060-01, September 2004 C-13

Section	Page
Trademarks	2
Statement of Conditions	2
Federal Communications Commission (FCC) Compliance Notice: Radio Frequency Notice	3
Canadian Department of Communications Compliance Statement	4
CE Declaration of Conformity	5
Contents	7
Chapter 1 About This Manual	13
Audience, Scope, Conventions	13
How to Use this Manual	14
How to Print this Manual	15
Chapter 2 Introduction	17
About the 54 Mbps Wireless Access Point WG602 v3	17
Support for Standards	17
Key Features	18
802.11g Standards-based Wireless Networking	18
Autosensing Ethernet Connections with Auto Uplink	19
Compatible and Related NETGEAR Products	19
System Requirements	19
What’s In the Box?	20
Hardware Description	21
WG602 v3 Wireless Access Point Front Panel	21
WG602 v3 Wireless Access Point Rear Panel	22
Power Socket	22
Reset and Restore to Factory Defaults Button	22
RJ-45 Ethernet Port	22
Detachable Antenna	22
Chapter 3 Basic Installation and Configuration	24
Observing Placement and Range Guidelines	24
Default Factory Settings	25
Understanding WG602 v3 Wireless Security Options	26
Installing the 54 Mbps Wireless Access Point WG602 v3	27
Two Ways to Log In to the WG602 v3	29
How to Log in Using the Default IP Address of the WG602 v3	30
How to Log In to the WG602 v3 Using Its Default NetBIOS Name	32
Using the Basic IP Settings Options	33
Understanding the Basic Wireless Settings	34
Understanding Wireless Security Options	36
Information to Gather Before Changing Basic Wireless Settings	37
How to Configure WEP Wireless Security	38
How to Configure WPA-PSK Wireless Security	39
How to Restrict Wireless Access by MAC Address	40
Chapter 4 Management	43
Viewing General Information	43
Viewing a List of Attached Devices	45
Upgrading the Wireless Access Point Software	45
Rebooting and Resetting Factory Default Options	47
Restoring the WG602 v3 to the Factory Default Settings	47
Using the Reset Button to Reboot or Restore Factory Defaults	47
Changing the Administrator Password	48
Chapter 5 Advanced Configuration	49
Understanding Advanced Wireless Settings	49
Configuring Wireless Distribution System Links	50
How to Configure Wireless Bridge Links	50
How to Configure a WG602 v3 as a Point-to-Point Bridge	51
How to Configure Wireless Multi-Point Bridging	52
Chapter 6 Troubleshooting	55
Troubleshooting	55
No lights are lit on the access point.	55
The Ethernet LAN light is not lit.	55
The Wireless LAN activity light is not lit.	56
I cannot configure the wireless access point from a browser.	56
I cannot access the Internet or the LAN with a wireless capable computer.	56
When I enter a URL or IP address I get a timeout error.	57
Using the Reset Button to Restore Factory Default Settings	57
Appendix A Specifications	59
Specifications for the WG602 v3	59
Appendix B Wireless Networking Basics	61
Wireless Networking Overview	61
Infrastructure Mode	61
Ad Hoc Mode (Peer-to-Peer Workgroup)	62
Network Name: Extended Service Set Identification (ESSID)	62
Wireless Channels	62
WEP Wireless Security	64
WEP Authentication	64
WEP Open System Authentication	65
WEP Shared Key Authentication	66
Key Size and Configuration	67
How to Use WEP Parameters	68
WPA Wireless Security	68
How Does WPA Compare to WEP?	69
How Does WPA Compare to IEEE 802.11i?	70
What are the Key Features of WPA Security?	70
WPA Authentication: Enterprise-level User Authentication via 802.1x/EAP and RADIUS	72
WPA Data Encryption Key Management	74
Temporal Key Integrity Protocol (TKIP)	75
Michael	75
AES Support	75
Is WPA Perfect?	76
Product Support for WPA	76
Supporting a Mixture of WPA and WEP Wireless Clients	76
Changes to Wireless Access Points	76
Changes to Wireless Network Adapters	77
Changes to Wireless Client Programs	78
Appendix C Network, Routing, Firewall, and Cabling Basics	79
Basic Router Concepts	79
What is a Router?	79
IP Addresses and the Internet	80
Netmask	82
Subnet Addressing	82
Private IP Addresses	85
Single IP Address Operation Using NAT	85
IP Configuration by DHCP	86
Domain Name Server	87
Routing Protocols	87
RIP	87
MAC Addresses and ARP	88
Internet Security and Firewalls	88
What is a Firewall?	89
Stateful Packet Inspection	89
Denial of Service Attack	89
Ethernet Cabling	89
Category 5 Cable Quality	90
Inside Twisted Pair Cables	91
Uplink Switches, Crossover Cables, and MDI/MDIX Switching	92
Appendix D Preparing Your PCs for Network Access	95
Preparing Your Computers for TCP/IP Networking	95
Configuring Windows 98 and Me for TCP/IP Networking	96
Installing or Verifying Windows Networking Components	96
Enabling DHCP to Automatically Configure TCP/IP Settings	97
DHCP Configuration of TCP/IP in Windows 98 and Me	98
Selecting the Windows Internet Access Method	99
Verifying TCP/IP Properties for Windows 98 or Me	99
Configuring Windows 2000 or XP for TCP/IP Networking	100
Installing or Verifying Windows Networking Components	100
DHCP Configuration of TCP/IP in Windows XP	101
DHCP Configuration of TCP/IP in Windows 2000	103
Verifying TCP/IP Properties for Windows XP or 2000	105
Glossary	107
Numeric	107
A	108
B	108
C	109
D	109
E	110
G	110
I	110
L	112
M	112
N	113
P	114
Q	115
R	115
S	115
T	116
U	116
W	116

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User’s Guide for the WG602 v3 54 Mbps Wireless Access Point

Network, Routing, Firewall, and Cabling Basics

C-13

202-10060-01, September 2004

Inside Twisted Pair Cables

For two devices to communicate, the transmitter of each device must be connected to the receiver

of the other device. The crossover function is usually implemented internally as part of the

circuitry in the device. Computers and workstation adapter cards are usually media-dependent

interface ports, called MDI or uplink ports. Most repeaters and switch ports are configured as

media-dependent interfaces with built-in crossover ports, called MDI-X or normal ports.

Auto

Uplink technology automatically senses which connection, MDI or MDI-X, is needed and makes

the right connection.

Figure C-4

illustrates straight-through twisted pair cable.

Figure C-4:

Straight-Through Twisted-Pair Cable

Figure C-5

illustrates crossover twisted pair cable.

Figure C-5:

Crossover Twisted-Pair Cable