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The Channel Status Screen

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Chapter 7 Wireless Table 26 Network Setting > Wireless > Others (continued) LABEL 802.11 Mode DESCRIPTION Select 802.11b Only to allow only IEEE 802.11b compliant WLAN devices to associate with the VMG. Select 802.11g Only to allow only IEEE 802.11g compliant WLAN devices to associate with the VMG. Select 802.11n Only to allow only IEEE 802.11n compliant WLAN devices to associate with the VMG. Select 802.11b/g Mixed to allow either IEEE 802.11b or IEEE 802.11g compliant WLAN devices to associate with the VMG. The transmission rate of your VMG might be reduced. 802.11 Protection Select 802.11b/g/n Mixed to allow IEEE 802.11b, IEEE 802.11g or IEEE802.11n compliant WLAN devices to associate with the VMG. The transmission rate of your VMG might be reduced. Enabling this feature can help prevent collisions in mixed-mode networks (networks with both IEEE 802.11b and IEEE 802.11g traffic). Select Auto to have the wireless devices transmit data after a RTS/CTS handshake. This helps improve IEEE 802.11g performance. Select Off to disable 802.11 protection. The transmission rate of your VMG might be reduced in a mixed-mode network. RIFS Advertisement Preamble This field displays Off and is not configurable when you set 802.11 Mode to 802.11b Only. Select Auto to enable the Reduced Inter-frame Spacing (RIFS) feature. It improves the Device's performance by reducing the amount of dead time required between OFDM transmissions. Select Off to disable the feature. Select a preamble type from the drop-down list box. Choices are Long or Short. See Section 7.9.7 on page 105 for more information. RX Chain Power Save OBSS Coexistence XPressTM Technology WPS 2.0 Apply Cancel This field is configurable only when you set 802.11 Mode to 802.11b. Select Enable to activate the RX Chain Power Save feature. It turns off one of the Receive chains to save power when it is not in use. Select Disabled to disable this feature. Select Enable to allow the coexistence of 20 MHz and 40 MHz Overlapping Basic Service Sets (OBSS) in wireless local area networks. Select Disabled to disable this feature. Select Enable for higher speeds, especially if you have both IEEE 802.11b and IEEE 802.11g wireless clients. The wireless clients do not have to support XPress™ Technology, although the performance enhancement is greater if they do. Select Disabled to disable this feature. Select Enable to support WPS 2.0 which enhances WPS security and flexibility on configuration. Select Disabled to disable this feature. Click Apply to save your changes. Click Cancel to restore your previously saved settings. 7.8 The Channel Status Screen Use the Channel Status screen to scan wireless LAN channel noises and view the results. Click Network Setting > Wireless > Channel Status. The screen appears as shown. Click Scan to scan the wireless LAN channels. You can view the results in the Channel Scan Result section. VMG3925-B10B User's Guide 98

Section	Page
VMG3925-B10B	1
Contents Overview	3
Table of Contents	5
User’s Guide	14
Introducing the VMG	15
1.1 Overview	15
1.2 Ways to Manage the VMG	15
1.3 Good Habits for Managing the VMG	15
1.4 Applications for the VMG	16
1.4.1 Internet Access	16
1.4.2 VMG’s USB Support	16
1.5 LEDs (Lights)	17
1.6 The RESET Button	19
1.7 Wireless Access	19
1.7.1 Using the Wi-Fi and WPS Buttons	19
The Web Configurator	21
2.1 Overview	21
2.1.1 Accessing the Web Configurator	21
2.2 Web Configurator Layout	23
2.2.1 Title Bar	23
2.2.2 Navigation Panel	24
Quick Start	28
3.1 Overview	28
3.2 Quick Start Setup	28
Tutorials	30
4.1 Overview	30
4.2 Setting Up an ADSL PPPoE Connection	30
4.3 Setting Up a Secure Wireless Network	33
4.3.1 Configuring the Wireless Network Settings	33
4.3.2 Using WPS	34
4.3.3 Without WPS	38
4.4 Setting Up Multiple Wireless Groups	39
4.5 Configuring Static Route for Routing to Another Network	42
4.6 Configuring QoS Queue and Class Setup	44
4.7 Access the VMG Using DDNS	48
4.7.1 Registering a DDNS Account on www.dyndns.org	48
4.7.2 Configuring DDNS on Your VMG	49
4.7.3 Testing the DDNS Setting	49
4.8 Configuring the MAC Address Filter	49
4.9 Access Your Shared Files From a Computer	50
Technical Reference	52
Network Map and Status Screens	53
5.1 Overview	53
5.2 The Network Map Screen	53
5.3 The Status Screen	54
Broadband	57
6.1 Overview	57
6.1.1 What You Can Do in this Chapter	57
6.1.2 What You Need to Know	58
6.1.3 Before You Begin	60
6.2 The Broadband Screen	61
6.2.1 Add/Edit Internet Connection	62
6.3 The 3G Backup Screen	70
6.4 The Advanced Screen	74
6.5 The 802.1x Screen	76
6.5.1 Modify 802.1X Settings	77
6.6 Technical Reference	78
Wireless	84
7.1 Overview	84
7.1.1 What You Can Do in this Chapter	84
7.1.2 What You Need to Know	84
7.2 The General Screen	85
7.2.1 No Security	87
7.2.2 Basic (WEP Encryption)	87
7.2.3 More Secure (WPA(2)-PSK)	88
7.3 The Guest / More AP Screen	89
7.3.1 Edit Guest / More AP	90
7.4 The WPS Screen	92
7.5 The WMM Screen	94
7.6 The WDS Screen	95
7.6.1 WDS Scan	96
7.7 The Others Screen	97
7.8 The Channel Status Screen	98
7.9 Technical Reference	99
7.9.1 Wireless Network Overview	99
7.9.2 Additional Wireless Terms	101
7.9.3 Wireless Security Overview	101
7.9.4 Signal Problems	103
7.9.5 BSS	104
7.9.6 MBSSID	104
7.9.7 Preamble Type	105
7.9.8 Wireless Distribution System (WDS)	105
7.9.9 WiFi Protected Setup (WPS)	105
Home Networking	113
8.1 Overview	113
8.1.1 What You Can Do in this Chapter	113
8.1.2 What You Need To Know	114
8.1.3 Before You Begin	115
8.2 The LAN Setup Screen	115
8.3 The Static DHCP Screen	119
8.4 The UPnP Screen	120
8.4.1 Turning On UPnP in Windows 7 Example	121
8.5 The Additional Subnet Screen	122
8.6 The STB Vendor ID Screen	124
8.7 The Wake on LAN Screen	124
8.8 The TFTP Server Name Screen	125
8.9 Technical Reference	125
8.9.1 LANs, WANs and the VMG	125
8.9.2 DHCP Setup	126
8.9.3 DNS Server Addresses	126
8.9.4 LAN TCP/IP	127
Routing	129
9.1 Overview	129
9.2 The Routing Screen	129
9.2.1 Add/Edit Static Route	130
9.3 The DNS Route Screen	131
9.3.1 The DNS Route Add Screen	131
9.4 The Policy Route Screen	132
9.4.1 Add/Edit Policy Route	133
9.5 RIP	134
9.5.1 The RIP Screen	134
Quality of Service (QoS)	135
10.1 Overview	135
10.1.1 What You Can Do in this Chapter	135
10.2 What You Need to Know	136
10.3 The Quality of Service General Screen	137
10.4 The Queue Setup Screen	138
10.4.1 Adding a QoS Queue	139
10.5 The Classification Setup Screen	140
10.5.1 Add/Edit QoS Class	141
10.6 The QoS Shaper Setup Screen	145
10.6.1 Add/Edit a QoS Shaper	146
10.7 The QoS Policer Setup Screen	146
10.7.1 Add/Edit a QoS Policer	147
10.8 Technical Reference	148
Network Address Translation (NAT)	153
11.1 Overview	153
11.1.1 What You Can Do in this Chapter	153
11.1.2 What You Need To Know	153
11.2 The Port Forwarding Screen	154
11.2.1 Add/Edit Port Forwarding	156
11.3 The Applications Screen	157
11.3.1 Add New Application	157
11.4 The Port Triggering Screen	158
11.4.1 Add/Edit Port Triggering Rule	160
11.5 The DMZ Screen	161
11.6 The ALG Screen	161
11.7 The Address Mapping Screen	162
11.7.1 Add/Edit Address Mapping Rule	163
11.8 The Sessions Screen	164
11.9 Technical Reference	164
11.9.1 NAT Definitions	165
11.9.2 What NAT Does	165
11.9.3 How NAT Works	166
11.9.4 NAT Application	166
Dynamic DNS Setup	169
12.1 Overview	169
12.1.1 What You Can Do in this Chapter	169
12.1.2 What You Need To Know	169
12.2 The DNS Entry Screen	170
12.2.1 Add/Edit DNS Entry	170
12.3 The Dynamic DNS Screen	171
Vlan Group	172
13.1 Overview	172
13.1.1 What You Can Do in this Chapter	172
13.2 The Vlan Group Screen	172
13.2.1 Add/Edit a VLAN Group	173
Interface Group	174
14.1 Overview	174
14.1.1 What You Can Do in this Chapter	174
14.2 The Interface Group Screen	174
14.2.1 Interface Group Configuration	175
14.2.2 Interface Grouping Criteria	177
USB Service	179
15.1 Overview	179
15.1.1 What You Can Do in this Chapter	179
15.1.2 ().What You Need To Know	179
15.1.3 Before You Begin	180
15.2 The File Sharing Screen	180
15.2.1 The Add New User Screen	181
15.3 The Media Server Screen	182
Firewall	184
16.1 Overview	184
16.1.1 What You Can Do in this Chapter	184
16.1.2 What You Need to Know	185
16.2 The Firewall Screen	185
16.3 The Protocol Screen	186
16.3.1 Add/Edit a Service	187
16.4 The Access Control Screen	188
16.4.1 Add/Edit an ACL Rule	189
16.5 The DoS Screen	190
MAC Filter	192
17.1 Overview	192
17.2 The MAC Filter Screen	192
Parental Control	194
18.1 Overview	194
18.2 The Parental Control Screen	194
18.2.1 Add/Edit a Parental Control Profile	195
Scheduler Rule	198
19.1 Overview	198
19.2 The Scheduler Rule Screen	198
19.2.1 Add/Edit a Schedule	198
Certificates	200
20.1 Overview	200
20.1.1 What You Can Do in this Chapter	200
20.2 What You Need to Know	200
20.3 The Local Certificates Screen	200
20.3.1 Create Certificate Request	201
20.3.2 Load Signed Certificate	203
20.4 The Trusted CA Screen	204
20.4.1 View Trusted CA Certificate	204
20.4.2 Import Trusted CA Certificate	205
Log	207
21.1 Overview	207
21.1.1 What You Can Do in this Chapter	207
21.1.2 What You Need To Know	207
21.2 The System Log Screen	208
21.3 The Security Log Screen	208
Traffic Status	210
22.1 Overview	210
22.1.1 What You Can Do in this Chapter	210
22.2 The WAN Status Screen	210
22.3 The LAN Status Screen	211
22.4 The NAT Status Screen	212
ARP Table	213
23.1 Overview	213
23.1.1 How ARP Works	213
23.2 ARP Table Screen	213
Routing Table	215
24.1 Overview	215
24.2 The Routing Table Screen	215
Multicast Status	217
25.1 Overview	217
25.2 The IGMP Status Screen	217
25.3 The MLD Status Screen	217
xDSL Statistics	219
26.1 The xDSL Statistics Screen	219
3G Statistics	222
27.1 Overview	222
27.2 The 3G Statistics Screen	222
System	224
28.1 Overview	224
28.2 The System Screen	224
User Account	225
29.1 Overview	225
29.2 The User Account Screen	225
29.2.1 The User Account Add/Edit Screen	225
Remote Management	227
30.1 Overview	227
30.2 The Remote MGMT Screen	227
30.3 The Trust Domain Screen	228
30.4 The Add Trust Domain Screen	228
TR-064	230
31.1 Overview	230
31.2 The TR-064 Screen	230
TR-069 Client	231
32.1 Overview	231
32.2 The TR-069 Client Screen	231
SNMP	233
33.1 Overview	233
33.2 The SNMP Screen	233
Time Settings	235
34.1 Overview	235
34.2 The Time Screen	235
E-mail Notification	237
35.1 Overview	237
35.2 The Email Notification Screen	237
35.2.1 Email Notification Edit	237
Log Setting	239
36.1 Overview	239
36.2 The Log Settings Screen	239
36.2.1 Example E-mail Log	240
Firmware Upgrade	242
37.1 Overview	242
37.2 The Firmware Screen	242
Backup Restore	245
38.1 Overview	245
38.2 The Backup Restore Screen	245
38.3 The ROM-D Screen	247
38.4 The Reboot Screen	247
Diagnostic	248
39.1 Overview	248
39.1.1 What You Can Do in this Chapter	248
39.2 What You Need to Know	248
39.3 Ping & TraceRoute & NsLookup	249
39.4 802.1ag	249
39.5 OAM Ping	250
Troubleshooting	253
40.1 Power, Hardware Connections, and LEDs	253
40.2 VMG Access and Login	254
40.3 Internet Access	256
40.4 Wireless Internet Access	257
40.5 USB Device Connection	258
40.6 UPnP	258
Appendices	260
Customer Support	261
Wireless LANs	267
IPv6	280
Services	288
Legal Information	292

Match case Limit results 1 per page

Chapter 7 Wireless

VMG3925-B10B User’s Guide

7.8

The Channel Status Screen

Use the

Channel Status

screen to scan wireless LAN channel noises and view the results. Click

Network Setting > Wireless > Channel Status

. The screen appears as shown. Click

Scan

scan the wireless LAN channels. You can view the results in the

Channel Scan Result

section.

802.11 Mode

Select

802.11b Only

to allow only IEEE 802.11b compliant WLAN devices to associate with

the VMG.

Select

802.11g Only

to allow only IEEE 802.11g compliant WLAN devices to associate with

the VMG.

Select

802.11n

Only

to allow only IEEE 802.11n compliant WLAN devices to associate with

the VMG.

Select

802.11b/g Mixed

to allow either IEEE 802.11b or IEEE 802.11g compliant WLAN

devices to associate with the VMG. The transmission rate of your VMG might be reduced.

Select

802.11b/g/n Mixed

to allow IEEE 802.11b, IEEE 802.11g or IEEE802.11n

compliant WLAN devices to associate with the VMG. The transmission rate of your VMG

might be reduced.

802.11

Protection

Enabling this feature can help prevent collisions in mixed-mode networks (networks with

both IEEE 802.11b and IEEE 802.11g traffic).

Select

Auto

to have the wireless devices transmit data after a RTS/CTS handshake. This

helps improve IEEE 802.11g performance.

Select

Off

to disable 802.11 protection. The transmission rate of your VMG might be

reduced in a mixed-mode network.

This field displays

Off

and is not configurable when you set

802.11 Mode

802.11b

Only

RIFS

Select

Auto

to enable the Reduced Inter-frame Spacing (RIFS) feature. It improves the

Device’s performance by reducing the amount of dead time required between OFDM

transmissions. Select

Off

to disable the feature.

Preamble

Select a preamble type from the drop-down list box. Choices are

Long

Short

. See

Section 7.9.7 on page 105

for more information.

This field is configurable only when you set 802.11 Mode to

802.11b

RX Chain Power

Save

Select

Enable

to activate the RX Chain Power Save feature. It turns off one of the Receive

chains to save power when it is not in use. Select

Disabled

to disable this feature.

OBSS

Coexistence

Select

Enable

to allow the coexistence of 20 MHz and 40 MHz Overlapping Basic Service

Sets (OBSS) in wireless local area networks. Select

Disabled

to disable this feature.

XPress

Technology

Select

Enable

for higher speeds, especially if you have both IEEE 802.11b and IEEE

802.11g wireless clients. The wireless clients do not have to support XPress™ Technology,

although the performance enhancement is greater if they do. Select

Disabled

to disable

this feature.

WPS 2.0

Select

Enable

to support WPS 2.0 which enhances WPS security and flexibility on

configuration. Select

Disabled

to disable this feature.

Apply

Click

Apply

to save your changes.

Cancel

Click

Cancel

to restore your previously saved settings.

Table 26

Network Setting > Wireless > Others (continued)

LABEL

DESCRIPTION