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Page 91 / 144 Scroll up to view Page 86 - 90
NETGEAR Wireless-N 300 Router WNR2000v2 User Manual
Fine-Tuning Your Network
5-12
v1.0, January 2010
5.
Click
Add
. the Port Triggering–Services screen displays.
6.
In the
Service Name
field, enter a descriptive service name.
7.
In the
Service User
field, select
Any
(the default) to allow this service to be used by any
computer on the Internet. Otherwise, select
Single address
, and enter the IP address of one
computer to restrict the service to a particular computer.
8.
Select the service type, either
TCP
or
UDP
.
9.
In the
Triggering Port
field, enter the number of the outbound traffic port that will cause the
inbound ports to be opened.
10.
Enter the inbound connection port information in the
Connection Type
,
Starting Port
, and
Ending Port
fields.
Figure 5-5
Page 92 / 144
NETGEAR Wireless-N 300 Router WNR2000v2 User Manual
Fine-Tuning Your Network
5-13
v1.0, January 2010
11.
Click
Apply
. The service appears in the Port Triggering Portmap table.
Figure 5-6
Page 93 / 144
NETGEAR Wireless-N 300 Router WNR2000v2 User Manual
Fine-Tuning Your Network
5-14
v1.0, January 2010
Using Universal Plug and Play
Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers, to
access the network and connect to other devices as needed. UPnP devices can automatically
discover the services from other registered UPnP devices on the network.
To turn on Universal Plug and Play:
1.
Select
UPnP
under Advanced the main menu. The UPnP screen displays.
2.
The available settings and information displayed in this screen are:
•
Turn UPnP On
. UPnP can be enabled or disabled for automatic device configuration.
The default setting for UPnP is disabled. If this check box is not selected, the router does
not allow any device to automatically control the resources, such as port forwarding
(mapping) of the router.
Note:
If you use applications such as multiplayer gaming, peer-to-peer connections, real-
time communications such as instant messaging, or remote assistance (a feature in
Windows XP), you should enable UPnP.
Figure 5-7
Page 94 / 144
NETGEAR Wireless-N 300 Router WNR2000v2 User Manual
Fine-Tuning Your Network
5-15
v1.0, January 2010
•
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 95 / 144
NETGEAR Wireless-N 300 Router WNR2000v2 User Manual
Fine-Tuning Your Network
5-16
v1.0, January 2010
•
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 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.
Changing the MTU Size
The Maximum Transmission Unit (MTU) is the largest data packet a network device transmits.
When one network device communicates across the Internet with another, the data packets travel
through many devices along the way. If any device in the data path has a lower MTU setting than
the other devices, the data packets must be split or “fragmented” to accommodate the one with the
smallest MTU.

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