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Technical Reference, 6.5.1 WMM QoS, CTS to self, RTS-CTS, 11 b/g/n, Wireless, Enable, Short GI

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Chapter 6 Wireless Settings Screen Table 14 Wireless > Wireless Settings: MBSSID (continued) LABEL DESCRIPTION Extension channel protection mode You can use CTS to self or RTS-CTS protection mechanism to reduce conflicts with other wireless networks or hidden wireless clients. The throughput of RTS-CTS is much lower than CTS to self. Using this mode may decrease your wireless performance. A-MPDU aggregation This field is available only when 802.11 b/g/n is selected as the Wireless Mode. Select Enable to allow the grouping of several A-MSDUs (Aggregate MAC Service Data Units) into one large A-MPDU (Aggregate MAC Protocol Data Unit). This function allows faster data transfer rates. Short GI This field is available only when 802.11 b/g/n is selected as the Wireless Mode. Select Enable to use Short GI (Guard Interval). The guard interval is the gap introduced between data transmission from users in order to reduce interference. Reducing the GI increases data transfer rates but also increases interference. Increasing the GI reduces data transfer rates but also reduces interference. Rates Configuration This section controls the data rates permitted for clients. For each Rate, select an option from the Configuration list. The options are: MCS Table • Basic (1~11 Mbps only): Clients can always connect to the access point at this speed. • Optional: Clients can connect to the access point at this speed, when permitted to do so by the AP. • Disable: Clients cannot connect to the access point at this speed. The MCS Rate table is available only when 802.11 b/g/n is selected in the 802.11 Wireless Mode field. IEEE 802.11n supports many different data rates which are called MCS rates. MCS stands for Modulation and Coding Scheme. This is an 802.11n feature that increases the wireless network performance in terms of throughput. Apply Cancel For each MCS Rate (0-15), select either Enable (default) to have the NWA use the data rate. Select Disable if you do not want the NWA to use the data rate. Click Apply to save your changes. Click Cancel to begin configuring this screen afresh. 6.5 Technical Reference This section provides technical background information about the topics covered in this chapter. Refer to Appendix E on page 191 for further readings on Wireless LAN. 6.5.1 WMM QoS WMM (Wi-Fi MultiMedia) QoS (Quality of Service) ensures quality of service in wireless networks. It controls WLAN transmission priority on packets to be transmitted over the wireless network. WMM QoS prioritizes wireless traffic according to the delivery requirements of the individual and applications. WMM QoS is a part of the IEEE 802.11e QoS enhancement to certified Wi-Fi wireless networks. NWA1100-N User's Guide 75

Section	Page
NWA1100-N	1
About This User's Guide	3
Document Conventions	5
Safety Warnings	7
Contents Overview	9
Table of Contents	11
User’s Guide	17
Introducing the NWA	19
1.1 Introducing the NWA	19
1.2 Applications for the NWA	19
1.2.1 Access Point	20
1.2.2 Bridge / Repeater	20
1.2.3 AP + Bridge	22
1.2.4 Wireless Client	23
1.2.5 MBSSID	24
1.3 Ways to Manage the NWA	25
1.4 Configuring Your NWA’s Security Features	25
1.4.1 Control Access to Your Device	25
1.4.2 Wireless Security	25
1.5 Good Habits for Managing the NWA	26
1.6 Hardware Connections	26
1.7 LEDs	27
Introducing the Web Configurator	29
2.1 Accessing the Web Configurator	29
2.2 Resetting the NWA	30
2.2.1 Methods of Restoring Factory-Defaults	30
2.3 Navigating the Web Configurator	30
Status Screens	33
3.1 The Status Screen	33
3.1.1 System Statistics Screen	35
Tutorial	37
4.1 How to Configure the Wireless LAN	37
4.1.1 Choosing the Wireless Mode	37
4.1.2 Wireless LAN Configuration Overview	37
4.1.3 Further Reading	38
4.2 How to Configure Multiple Wireless Networks	39
4.2.1 Configure the SSID Profiles	40
4.2.2 Configure the Standard Network	42
4.2.3 Configure the VoIP Network	43
4.2.4 Configure the Guest Network	45
4.2.5 Testing the Wireless Networks	46
4.3 NWA Setup in AP and Wireless Client Modes	47
4.3.1 Scenario	47
4.3.2 Configuring the NWA in Access Point Mode	47
4.3.3 Configuring the NWA in Wireless Client Mode	50
4.3.4 MAC Filter Setup	51
4.3.5 Testing the Connection and Troubleshooting	52
Technical Reference	53
System Screens	55
5.1 Overview	55
5.2 What You Can Do in this Chapter	55
5.3 What You Need To Know	55
5.4 General Screen	57
5.4.1 Password Screen	57
5.5 Time Screen	58
5.6 Technical Reference	59
5.6.1 Pre-defined NTP Time Servers List	59
Wireless Settings Screen	60
6.1 Overview	60
6.2 What You Can Do in this Chapter	60
6.3 What You Need To Know	61
6.4 Wireless Settings Screen	62
6.4.1 Access Point Mode	63
6.4.2 Bridge / Repeater Mode	65
6.4.3 AP + Bridge Mode	69
6.4.4 Wireless Client Mode	70
6.4.5 MBSSID Mode	73
6.5 Technical Reference	75
6.5.1 WMM QoS	75
6.5.2 Spanning Tree Protocol (STP)	76
6.5.3 Additional Wireless Terms	77
SSID Screen	79
7.1 Overview	79
7.1.1 What You Can Do in this Chapter	79
7.1.2 What You Need To Know	79
7.2 The SSID Screen	80
7.2.1 Configuring SSID	81
7.3 Technical Reference	82
7.3.1 WMM QoS	82
7.3.2 Type Of Service (ToS)	83
Wireless Security Screen	85
8.1 Overview	85
8.2 What You Can Do in this Chapter	85
8.3 What You Need To Know	86
8.4 The Security Screen	87
8.4.1 Security: WEP	89
8.4.2 Security: 802.1x Only	90
8.4.3 Security: 802.1x Static 64-bit, 802.1x Static 128-bit, 802.1x Static 152- bit	92
8.4.4 Security: WPA	93
8.4.5 Security: WPA2 or WPA2-MIX	95
8.4.6 Security: WPA-PSK, WPA2-PSK, WPA2-PSK-MIX	97
8.5 Technical Reference	98
RADIUS Screen	99
9.1 Overview	99
9.2 What You Can Do in this Chapter	99
9.3 What You Need to Know	99
9.4 The RADIUS Screen	100
MAC Filter Screen	102
10.1 Overview	102
10.2 What You Can Do in this Chapter	102
10.3 What You Need To Know	102
10.4 MAC Filter Screen	103
IP Screen	105
11.1 Overview	105
11.2 What You Can Do in this Chapter	105
11.3 What You Need to Know	105
11.4 IP Screen	106
11.5 Technical Reference	107
11.5.1 WAN IP Address Assignment	107
11.5.2 Spanning Tree Protocol (STP)	107
Remote Management	109
12.1 Overview	109
12.2 What You Can Do in this Chapter	109
12.3 What You Need To Know	110
12.4 The Telnet Screen	112
12.5 The FTP Screen	112
12.6 The WWW Screen	113
12.7 The SNMP Screen	115
12.8 Technical Reference	116
12.8.1 MIB	116
12.8.2 Supported MIBs	116
12.8.3 SNMP Traps	117
Certificate Screen	119
13.1 Overview	119
13.2 What You Can Do in this Chapter	119
13.3 What You Need To Know	119
13.4 Certificate Screen	120
13.5 Technical Reference	120
13.5.1 Private-Public Certificates	120
13.5.2 Certification Authorities	121
13.5.3 Checking the Fingerprint of a Certificate on Your Computer	121
Log Screens	123
14.1 Overview	123
14.2 What You Can Do in this Chapter	123
14.3 What You Need To Know	124
14.4 View Log Screen	124
14.5 Log Settings Screen	125
Maintenance	129
15.1 Overview	129
15.2 What You Can Do in this Chapter	129
15.3 What You Need To Know	129
15.4 Association List Screen	129
15.5 Channel Usage Screen	130
15.6 F/W Upload Screen	131
15.7 Configuration File Screen	133
15.7.1 Backup Configuration	133
15.7.2 Restore Configuration	133
15.7.3 Back to Factory Defaults	135
15.8 Restart Screen	135
Troubleshooting	137
16.1 Power, Hardware Connections, and LEDs	137
16.2 NWA Access and Login	138
16.3 Internet Access	139
Product Specifications	141
Power over Ethernet (PoE) Specifications	142
Setting Up Your Computer’s IP Address	143
Pop-up Windows, JavaScript and Java Permissions	171
IP Addresses and Subnetting	183
Wireless LANs	191
Text File Based Auto Configuration	205
Open Software Announcements	207
Legal Information	237

Match case Limit results 1 per page

Chapter 6 Wireless Settings Screen

NWA1100-N User’s Guide

6.5

Technical Reference

This section provides technical background information about the topics covered in this chapter.

Refer to

Appendix E on page 191

for further readings on Wireless LAN.

6.5.1

WMM QoS

WMM (Wi-Fi MultiMedia) QoS (Quality of Service) ensures quality of service in wireless networks. It

controls WLAN transmission priority on packets to be transmitted over the wireless network.

WMM QoS prioritizes wireless traffic according to the delivery requirements of the individual and

applications. WMM QoS is a part of the IEEE 802.11e QoS enhancement to certified Wi-Fi wireless

networks.

Extension channel

protection mode

You can use

CTS to self

RTS-CTS

protection mechanism to reduce

conflicts with other wireless networks or hidden wireless clients. The

throughput of

RTS-CTS

is much lower than

CTS to self

. Using this mode

may decrease your wireless performance.

A-MPDU aggregation

This field is available only when

802.11 b/g/n

is selected as the

Wireless

Mode

. Select

Enable

to allow the grouping of several A-MSDUs (Aggregate

MAC Service Data Units) into one large A-MPDU (Aggregate MAC Protocol

Data Unit). This function allows faster data transfer rates.

Short GI

This field is available only when

802.11 b/g/n

is selected as the

Wireless

Mode

. Select

Enable

to use

Short GI

(Guard Interval). The guard interval

is the gap introduced between data transmission from users in order to

reduce interference. Reducing the GI increases data transfer rates but also

increases interference. Increasing the GI reduces data transfer rates but

also reduces interference.

Rates Configuration

This section controls the data rates permitted for clients.

For each

Rate

, select an option from the

Configuration

list. The options

are:

•

Basic

(1~11 Mbps only): Clients can always connect to the access point

at this speed.

•

Optional

: Clients can connect to the access point at this speed, when

permitted to do so by the AP.

•

Disable

: Clients cannot connect to the access point at this speed.

MCS Table

The

MCS Rate

table is available only when

802.11 b/g/n

is selected

in the

802.11 Wireless Mode

field.

IEEE 802.11n supports many different data rates which are called MCS

rates. MCS stands for Modulation and Coding Scheme. This is an 802.11n

feature that increases the wireless network performance in terms of

throughput.

For each MCS Rate (0-15), select either

Enable

(default) to have the NWA

use the data rate. Select

Disable

if you do not want the NWA to use the

data rate.

Apply

Click

Apply

to save your changes.

Cancel

Click

Cancel

to begin configuring this screen afresh.

Table 14

Wireless > Wireless Settings: MBSSID (continued)

LABEL

DESCRIPTION