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You can specify the pool of IP address that the router assigns by setting the starting IP

address and ending IP address. These addresses should be part of the same IP address

subnet as the router’s LAN IP address. Using the default addressing scheme, you should

define a range between 192.168.1.2 and 192.168.1.254, although you might want to save

part of the range for devices with fixed addresses.

The router delivers the following parameters to any LAN device that requests DHCP:

•

An IP address from the range you have defined

•

Subnet mask

•

Gateway IP address (the router’s LAN IP address)

•

Primary DNS server (if you entered a primary DNS address in the Internet Setup screen;

otherwise, the router’s LAN IP address)

•

Secondary DNS server (if you entered a secondary DNS address in the Internet Setup

screen)

To use another device on your network as the DHCP server, or to manually configure the

network settings of all of your computers, clear the

Use Router as DHCP Server

check box

and click

Apply

. Otherwise, leave this check box selected. If this service is not enabled and

no other DHCP server is available on your network, you need to set your computers’ IP

addresses manually or they cannot access the router.

Address Reservation

When you specify a reserved IP address for a computer on the LAN, that computer always

receives the same IP address each time it accesses the router’s DHCP server. Reserved IP

addresses should be assigned to computers or servers that require permanent IP settings.



To reserve an IP address:

1.

Select

Advanced > Setup > LAN Setup

.

2.

In the Address Reservation section of the screen, click the

Add

button.

3.

In the IP Address field, type the IP address to assign to the computer or server.

Choose an IP address from the router’s LAN subnet, such as 192.168.1.x.

4.

Type the MAC address of the computer or server.

Tip:

If the computer is already on your network, you can copy its MAC

address from the Attached Devices screen and paste it here.

5.

Click

Apply

to enter the reserved address into the table.

The reserved address is not assigned until the next time the computer contacts the

router’s DHCP server. Reboot the computer, or access its IP configuration and force a

DHCP release and renew.

To edit or delete a reserved address entry, select the radio button next to the reserved

address you want to edit or delete. Then click

Edit

or

Delete

.

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N900 Wireless Dual Band Gigabit Router R4500

Quality of Service (QoS) Setup

QoS is an advanced feature that can be used to prioritize some types of traffic ahead of

others. The router can provide QoS prioritization over the wireless link and on the Internet

connection. To configure QoS, use the QoS Setup screen.



Enable WMM QoS for Wireless Multimedia Applications

The router supports Wi-Fi Multimedia Quality of Service (WMM QoS) to prioritize wireless

voice and video traffic over the wireless link. WMM QoS provides prioritization of wireless

data packets from different applications based on four access categories: voice, video, best

effort, and background. For an application to receive the benefits of WMM QoS, both it and

the client running that application have to have WMM enabled. Legacy applications that do

not support WMM and applications that do not require QoS, are assigned to the best effort

category, which receives a lower priority than voice and video.

1.

Select

Advanced > Setup > QoS Setup

:

2.

Disable WMM QoS in the QoS Setup screen by clearing the

Enable WMM

check box.

WMM QoS is enabled by default.

3.

Click

Apply

to save your settings.

Set Up QoS for Internet Access

You can give prioritized Internet access to the following types of traffic:

•

Specific applications

•

Specific online games

•

Individual Ethernet LAN ports of the router

•

A specific device by MAC address

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To specify prioritization of traffic, you have to create a policy for the type of traffic and add the

policy to the QoS Policy table in the QoS Setup screen. For convenience, the QoS Policy

table lists many common applications and online games that can benefit from QoS handling.

QoS for Applications and Online Gaming



To create a QoS policy for applications and online games:

1.

In the QoS Setup screen, select the

Turn Internet Access QoS On

check box.

2.

Click the

Setup QoS Rule

button to display the existing priority rules.

3.

Select the

Edit

or

Delete

radio button to edit or delete a rule. You can also delete all of the

rules by clicking the

Delete All

button.

4.

Scroll down to the bottom of the QoS Setup screen and click

Add Priority Rule

to display

the following screen:

5.

In the QoS Policy for field, type the name of the application or game.

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6.

In the Priority Category list, select either

Applications

or

Online Gaming

.

A list of applications or games displays.

7.

Select an existing item, or scroll and select

Add a new application

or

Add a new game

as

applicable.

If you add an entry, the Priority Rules screen expands as shown:

8.

In the Connection Type list, select either

TCP,

UDP,

or both (

TCP/UDP

), and specify the port

number or range of port numbers used by the application or game.

9.

From the Priority list, select the priority that this traffic should receive relative to other

applications and traffic when accessing the Internet.

The options are Low, Normal, High, and Highest.

10.

Click

Apply

to save this rule to the QoS Policy list and return to the QoS Setup screen.

QoS for a Router LAN Port



To create a QoS policy for a device connected to one of the router’s LAN ports:

1.

Select

Advanced > Setup > QoS Setup

.

2.

Select the

Turn Internet Access QoS On

check box.

3.

Click the

Setup QoS Rule

button.

4.

Click the

Add Priority Rule

button.

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5.

From the Priority Category list, select

Ethernet LAN Port

, as shown in the following figure:

6.

From the LAN port list, select the LAN port.

7.

From the Priority list, select the priority that this port’s traffic should receive relative to other

applications and traffic when accessing the Internet.

The options are Low, Normal, High, and Highest.

8.

Click

Apply

to save this rule to the QoS Policy list and return to the QoS Setup screen.

9.

In the QoS Setup screen, click

Apply

.

QoS for a MAC Address



To create a QoS policy for traffic from a specific MAC address:

1.

Select

Advanced > Setup > QoS Setup

2.

Click the

Setup QoS Rule

button.

The QoS Setup screen displays.

3.

Click

Add Priority Rule

.