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Page 81 / 134 Scroll up to view Page 76 - 80
NETGEAR RangeMax™ Dual Band Wireless-N Router WNDR3300 Reference Manual
Fine-Tuning Your Network
5-13
v1.0, February 2008
•
Advertisement Period
.
The advertisement period is how often the router broadcasts its
UPnP information. This value can range from 1 to 1440 minutes. The default period is 30
minutes. Shorter durations ensure that control points have current device status at the
expense of additional network traffic. Longer durations might compromise the freshness
of the device status but can significantly reduce network traffic.
•
Advertisement Time To Live
.
The time to live for the advertisement is measured in hops
(steps) for each UPnP packet sent. The time to live hop count is the number of steps a
broadcast packet is allowed to propagate for each UPnP advertisement before it
disappears. The number of hops can range from 1 to 255. The default value for the
advertisement time to live is 4 hops, which should be fine for most home networks. If you
notice that some devices are not being updated or reached correctly, then it might be
necessary to increase this value.
•
UPnP Portmap Table
.
The UPnP Portmap Table displays the IP address of each UPnP
device that is currently accessing the router and which ports (Internal and External) that
device has opened. The UPnP Portmap Table also displays what type of port is open and
whether that port is still active for each IP address.
3.
Click
Apply
to save your settings.
Optimizing Wireless Performance
The speed and operating distance or range of your wireless connection can vary significantly based
on the physical placement of the wireless router. You should choose a location for your router that
will maximize the network speed.
The following list describes how to optimize wireless router performance.
•
Identify critical wireless links.
If your network has several wireless devices, decide which wireless devices need the highest
data rate, and locate the router near them. Many wireless products have automatic data-rate
fallback, which allows increased distances without loss of connectivity. This also means that
devices that are farther away might be slower. Therefore, the most critical links in your
network are those where the traffic is high and the distances are great. Optimize those first.
Note:
Failure to follow these guidelines can result in significant performance degradation
or inability to wirelessly connect to the router. For complete range and
performance specifications, click the link to the online document
“Wireless
Networking Basics” in Appendix B
.
Page 82 / 134
NETGEAR RangeMax™ Dual Band Wireless-N Router WNDR3300 Reference Manual
5-14
Fine-Tuning Your Network
v1.0, February 2008
•
Choose placement carefully.
For best results, place your router:
–
Near the center of the area in which your computers will operate.
–
In an elevated location such as a high shelf where the wirelessly connected computers
have line-of-sight access (even if through walls).
–
Avoid obstacles to wireless signals.
–
Keep wireless devices at least 2 feet from large metal fixtures such as file cabinets,
refrigerators, pipes, metal ceilings, reinforced concrete, and metal partitions.
–
Keep wireless devices away from large amounts of water such as fish tanks and water
coolers.
•
Reduce interference.
Avoid windows unless communicating between buildings.
Place wireless devices away from various electromagnetic noise sources, especially those in
the 2400–2500 MHz frequency band. Common noise-creating sources are:
–
Computers and fax machines (no closer than 1 foot)
–
Copying machines, elevators, and cell phones (no closer than 6 feet)
–
Microwave ovens (no closer than 10 feet)
•
Choose your settings.
–
Use a scanning utility to determine what other wireless networks are operating nearby, and
choose an unused channel.
–
Turn off SSID broadcast, and change the default SSID. Other nearby devices might
automatically try to connect to your network several times a second, which can cause
significant performance reduction.
•
Use WMM to improve the performance of voice and video traffic over the wireless link.
Configuring Quality of Service
Quality of Service (QoS) is an advanced feature that can be used to prioritize some types of traffic
ahead of others. The WNDR3300 router can provide QoS prioritization over the wireless link and
on the Internet connection. To configure QoS, use the QoS Setup screen.
Page 83 / 134
NETGEAR RangeMax™ Dual Band Wireless-N Router WNDR3300 Reference Manual
Fine-Tuning Your Network
5-15
v1.0, February 2008
From the main menu of the browser interface, under Advanced, select
QoS Setup
. The QoS Setup
screen displays:
Using WMM QoS for Wireless Multimedia Applications
The WNDR3300 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 must be 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.
Figure 5-6
Page 84 / 134
NETGEAR RangeMax™ Dual Band Wireless-N Router WNDR3300 Reference Manual
5-16
Fine-Tuning Your Network
v1.0, February 2008
WMM QoS is enabled by default. You can disable it in the QoS Setup screen, shown in
Figure 5-6 on page 5-15
, by clearing the
Enable WMM
check box and clicking
Apply
.
Configuring QoS for Internet Access
You can give prioritized Internet access to the following types of traffic:
•
For specific applications
•
For specific online games
•
On individual Ethernet LAN ports of the router
•
From a specific device by MAC address
To specify prioritization of traffic, you must 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.
From the main menu, under Advanced, select
QoS Setup
. The QoS Setup screen displays, as
shown in
Figure 5-6 on page 5-15
.
2.
Click
Add Priority Rule
. The QoS - Priority Rules screen displays.
3.
In the
Priority Category
list, select either
Applications
or
Online Gaming
. In either case, a
list of predefined applications or games displays in the
Applications
drop-down list.
4.
From the
Applications
list, you can select an existing item, or you can scroll to the bottom of
the list and select
Add a New Application
or
Add a New Game
.
Figure 5-7
Page 85 / 134
NETGEAR RangeMax™ Dual Band Wireless-N Router WNDR3300 Reference Manual
Fine-Tuning Your Network
5-17
v1.0, February 2008
a.
If you select to add a new entry, the screen expands as shown:
b.
In the
QoS Policy for
field, enter a descriptive name for the new application or game.
c.
Select the packet type, either
TCP,
UDP,
or both (
TCP/UDP
), and specify the port
number or range of port numbers used by the application or game.
5.
From the
Priority
drop-down 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.
6.
Click
Apply
to save this rule to the QoS Policy list and return to the QoS Setup screen.
7.
In the QoS Setup screen, select the
Turn Internet Access QoS On
check box.
8.
Click
Apply
.
QoS for a Router LAN Port
To create a QoS policy for a device connected to one of the router’s LAN ports:
1.
From the main menu, under Advanced, select
QoS Setup
. The QoS Setup screen displays, as
shown in
Figure 5-6 on page 5-15
.
2.
Click
Add Priority Rule
.
Figure 5-8

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