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IP Addresses and Subnetting

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APPENDIX B IP Addresses and Subnetting This appendix introduces IP addresses and subnet masks. IP addresses identify individual devices on a network. Every networking device (including computers, servers, routers, printers, etc.) needs an IP address to communicate across the network. These networking devices are also known as hosts. Subnet masks determine the maximum number of possible hosts on a network. You can also use subnet masks to divide one network into multiple sub-networks. Introduction to IP Addresses One part of the IP address is the network number, and the other part is the host ID. In the same way that houses on a street share a common street name, the hosts on a network share a common network number. Similarly, as each house has its own house number, each host on the network has its own unique identifying number - the host ID. Routers use the network number to send packets to the correct network, while the host ID determines to which host on the network the packets are delivered. Structure An IP address is made up of four parts, written in dotted decimal notation (for example, 192.168.1.1). Each of these four parts is known as an octet. An octet is an eight-digit binary number (for example 11000000, which is 192 in decimal notation). Therefore, each octet has a possible range of 00000000 to 11111111 in binary, or 0 to 255 in decimal. The following figure shows an example IP address in which the first three octets (192.168.1) are the network number, and the fourth octet (16) is the host ID. WAP3205 User's Guide 131

Section	Page
WAP3205	1
Contents Overview	3
Table of Contents	5
User’s Guide	9
Getting to Know Your WAP3205	11
1.1 Overview	11
1.2 Applications	11
1.3 Ways to Manage the WAP3205	11
1.4 Good Habits for Managing the WAP3205	12
1.5 LEDs	12
1.6 Wall Mounting	13
WAP3205 Modes	15
2.1 Overview	15
2.1.1 Device Modes	15
Access Point Mode	17
3.1 Overview	17
3.2 What You Can Do	17
3.3 What You Need to Know	17
3.3.1 Setting your WAP3205 to AP Mode	17
3.3.2 Configuring your WLAN, LAN and Maintenance Settings	18
3.4 AP Mode Status Screen	18
Client Mode	23
4.1 Overview	23
4.2 What You Can Do	23
4.3 What You Need to Know	23
4.4 Setting your WAP3205 to Client Mode	24
4.5 Client Mode Status Screen	24
4.6 Wireless LAN Profile Screen	26
4.6.1 Adding a New WLAN Profile	27
4.7 Site Survey Screen	31
4.8 WPS Screen	32
Universal Repeater Mode	35
5.1 Overview	35
5.2 What You Can Do	35
5.3 What You Need to Know	36
5.4 Setting your WAP3205 to Universal Repeater Mode	36
5.5 Universal Repeater Mode Status Screen	36
5.6 Universal Repeater Screen	39
5.6.1 No Security	39
5.6.2 Static WEP	40
5.6.3 WPA(2)-PSK	41
Introducing the Web Configurator	43
6.1 Overview	43
6.2 Accessing the Web Configurator	43
6.2.1 Login Screen	43
6.2.2 Password Screen	44
6.2.3 Home Screen	45
6.3 Resetting the WAP3205	47
6.3.1 Procedure to Use the Reset Button	47
Connection Wizard	49
7.1 Overview	49
7.2 Accessing the Wizard	49
7.2.1 Device Password	49
7.2.2 Operation Mode	50
7.2.3 Wireless Configuration	50
Tutorials	59
8.1 Overview	59
8.2 Connecting to the Internet from an Access Point	59
8.3 Configuring Wireless Security Using WPS	59
8.3.1 Push Button Configuration (PBC)	60
8.3.2 PIN Configuration	61
8.4 Enabling and Configuring Wireless Security (No WPS)	62
8.4.1 Configure Your Notebook	64
8.5 Using Multiple SSIDs on the WAP3205	66
8.5.1 Configuring Security Settings of Multiple SSIDs	67
8.6 Connecting the WAP3205 (in Universal Repeater Mode) to an AP or Wireless Router	70
8.7 Connecting the WAP3205 (in Client Mode) to an AP or Wireless Router	74
8.7.1 Connecting to a Wireless Network Using Site Survey	74
8.7.2 Connecting to a Wireless Network Using a Profile	76
8.7.3 Deploying the WAP3205 in your Network	77
Technical Reference	79
Monitor	81
9.1 Overview	81
9.2 What You Can Do	81
9.3 Log	81
9.4 Packet Statistics	82
9.5 WLAN Station Status	83
Wireless LAN	85
10.1 Overview	85
10.2 What You Can Do	85
10.3 What You Should Know	86
10.3.1 Wireless Security Overview	86
10.4 General Wireless LAN Screen	88
10.5 Wireless Security Screen	89
10.5.1 No Security	89
10.5.2 WEP Encryption	90
10.5.3 WPA-PSK/WPA2-PSK	92
10.6 MAC Filter	93
10.7 Wireless LAN Advanced Screen	94
10.8 Quality of Service (QoS) Screen	95
10.9 WPS Screen	96
10.10 WPS Station Screen	97
10.11 Scheduling Screen	97
10.12 WDS Screen	98
LAN	101
11.1 Overview	101
11.2 What You Can Do	101
11.3 What You Need To Know	101
11.3.1 LAN TCP/IP	102
11.3.2 IP Alias	102
11.4 LAN IP Screen	102
11.5 IP Alias Screen	103
Maintenance	105
12.1 Overview	105
12.2 What You Can Do	105
12.3 General Screen	105
12.4 Password Screen	106
12.5 Time Setting Screen	107
12.6 Firmware Upgrade Screen	109
12.7 Configuration Backup/Restore Screen	110
12.8 Reset/Restart Screen	111
12.9 System Operation Mode Overview	112
12.10 Sys Op Mode Screen	113
Troubleshooting	115
13.1 Power, Hardware Connections, and LEDs	115
13.2 WAP3205 Access and Login	116
13.3 Internet Access	117
13.4 Resetting the WAP3205 to Its Factory Defaults	118
13.5 Wireless Router/AP Troubleshooting	119
Pop-up Windows, JavaScripts and Java Permissions	121
IP Addresses and Subnetting	131
Setting Up Your Computer’s IP Address	141
Wireless LANs	169
Common Services	183
Legal Information	187

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WAP3205 User’s Guide

131

PPENDIX

IP Addresses and Subnetting

This appendix introduces IP addresses and subnet masks.

IP addresses identify individual devices on a network. Every networking device (including

computers, servers, routers, printers, etc.) needs an IP address to communicate across the

network. These networking devices are also known as hosts.

Subnet masks determine the maximum number of possible hosts on a network. You can also use

subnet masks to divide one network into multiple sub-networks.

Introduction to IP Addresses

One part of the IP address is the network number, and the other part is the host ID. In the same

way that houses on a street share a common street name, the hosts on a network share a common

network number. Similarly, as each house has its own house number, each host on the network has

its own unique identifying number - the host ID. Routers use the network number to send packets

to the correct network, while the host ID determines to which host on the network the packets are

delivered.

Structure

An IP address is made up of four parts, written in dotted decimal notation (for example,

192.168.1.1). Each of these four parts is known as an octet. An octet is an eight-digit binary

number (for example 11000000, which is 192 in decimal notation).

Therefore, each octet has a possible range of 00000000 to 11111111 in binary, or 0 to 255 in

decimal.

The following figure shows an example IP address in which the first three octets (192.168.1) are

the network number, and the fourth octet (16) is the host ID.