D-Link DWR-921 Router Manual PDF (Setup & Configuration Guide)

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46

D-Link DWR-921 User Manual

Section 3 - Conﬁguration

Specify a value for the beacon interval. Beacons are packets

sent by an access point to synchronize a wireless network. 100

is the default setting and is recommended.

Set the transmit power of the antennas.

This value should remain at its default setting of 2347. If

inconsistent data ﬂow is a problem, only a minor modiﬁcation

should be made.

The fragmentation threshold, which is speciﬁed in bytes,

determines whether packets will be fragmented. Packets

exceeding the 2346 byte setting will be fragmented before

transmission. 2346 is the default setting.

Set the interval for DTIM. A Delivery Traﬃc Indication Message

(DTIM) is a countdown informing clients of the next window

for listening to broadcast and multicast messages. The default

interval is 3.

WMM (Wi-Fi Multimedia) is a QoS (Quality of Service) system

for your wireless network. Enable this option to improve

the quality of video and voice applications for your wireless

clients.

Select the basic transfer rates based on the speed of

wireless adapters on your wireless network. It is strongly

recommended to keep this setting to

Auto

.

Beacon Interval:

Transmit Power:

RTS Threshold:

Fragmentation:

DTIM Interval:

WMM Capable:

TX Rates:

Advanced Wireless

contains settings which can negatively aﬀect the performance of your router if conﬁgured improperly. Do not change these

settings unless you are already familiar with them or have been instructed to make the change by one of our support personnel. After modifying

any settings, click

Save Settings

to save your changes.

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47

D-Link DWR-921 User Manual

Section 3 - Conﬁguration

Check this box to reduce the guard interval to 400 ns. This can

increase the throughput rate provided that the delay spread

of the connection is also low. However, it can also increase

error rate in some installations, due to increased sensitivity to

radio-frequency reﬂections. Select the option that works best

for your installation.

Enable this option to reduce interference from other

wireless networks in your area. If the channel width

is operating at 40 MHz and there is another wireless

network’s channel over-lapping and causing interference,

the router will automatically change to 20 MHz.

Short GI:

HT 20/40 Coexistence:

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48

D-Link DWR-921 User Manual

Section 3 - Conﬁguration

Check the box to enable the Universal Plug and Play (UPnP™)

feature. UPNP provides compatibility with various networking

equipment, software, and peripherals.

Select the box to allow the WAN port to be “pinged.” Blocking

WAN pings may provide some extra security from hackers.

Advanced Network

contains settings which can change the way the router handles certain types of traﬃc. We recommend that you do not change

any of these settings unless you are already familiar with them or have been instructed to make the change by one of our support personnel. After

modifying any settings, click

Save Settings

to save your changes.

Enable UPnP:

Enable WAN Ping

Respond:

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49

D-Link DWR-921 User Manual

Section 3 - Conﬁguration

Leave this setting on

Auto

to allow the DWR-921 to

automatically select a cellular network to connect to. If you

need to select a network manually, select

Manual

, click the

Scan

button, then select an available network to connect to.

Note

: You will only be able to scan for networks if the

DWR-921 is not currently connected to a 3G/4G network.

Network Scan

This page lets you set whether to allow the DWR-921 to automatically select a 3G/4G network based on the inserted SIM card, and allows you to

manually scan for networks and select one to connect to.

3G/4G Network Selection

Method:

Page 55 / 88

50

D-Link DWR-921 User Manual

Section 3 - Conﬁguration

ADMINISTRATOR

Enter and conﬁrm the password that the admin account will

use to access the router’s management interface.

REMOTE MANAGEMENT

Tick this check box to enable remote management. Remote

management allows the DWR-921 to be conﬁgured over the

Internet through a web browser. A username and password

will still be required to access the web-management interface.

Enter the Internet IP address of the PC that has access to the

broadband router. If you enter an asterisk (*) in this ﬁeld, then

anyone will be able to access the router. Adding an asterisk

(*) into this ﬁeld could present a security risk and is not

recommended.

This is the port number used to access the router. 8080 is the

port usually used for the web-management interface.

Admin

The

Admin

page allows you to change the Administrator password and enable Remote Management.

The admin has read/write access while users

only have read-only access. Only the admin has the ability to change both admin and user account passwords. After modifying any settings, click

Save Settings

to save your changes.

Admin Password:

Remote Management:

IP Allowed to Access:

Port:

Tools

The

TOOLS

pages allow you to adjust various system settings for your router, such as the system time, ﬁrmware, and custom schedules. To view the

Tools pages, click on

TOOLS

at the top of the screen.

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