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Page 36 / 91 Scroll up to view Page 31 - 35
TD-W8951ND
150Mbps Wireless N ADSL2+ Modem Router User Guide
function.
Both
means the ADSL Router will periodically send routing information and
accept routing information, and then incorporate them into routing table.
IN only
means
the ADSL router will only accept but will not send RIP packet.
OUT only
means the ADSL
router will only send but will not accept RIP packet.
•
Multicast:
Select IGMP version, or disable the function. IGMP (Internet Group Multicast
Protocol) is a session-layer protocol used to establish membership in a multicast group.
The ADSL ATU-R supports both IGMP version 1 (
IGMP v1
),
IGMP v2
and
IGMP v3
.
Select “Disabled” to disable it.
•
IGMP Snoop:
Enable the IGMP Snoop function if you need.
¾
DHCP Server:
Select
Enabled
, then you will see the screen below (shown in Figure 4-12).
The Router will work as a DHCP Server; it becomes the default gateway for DHCP client
connected to it. DHCP stands for Dynamic Host Control Protocol. The DHCP Server gives out
IP addresses when a device is booting up and request an IP address to be logged on to the
network. That device must be set as a DHCP client to obtain the IP address automatically. By
default, the DHCP Server is enabled. The DHCP address pool contains the range of the IP
address that will automatically be assigned to the clients on the network.
Figure 4-12
•
Starting IP Address:
Enter the starting IP address for the DHCP server's IP assignment.
Because the default IP address for the Router is 192.168.1.1, the default Start IP
Address is
192.168.1.2
, and the Start IP Address must be 192.168.1.2 or greater, but
smaller than 192.168.1.254.
•
IP Pool Count:
The max user pool size.
•
Lease Time:
The length of time for the IP lease. After the dynamic IP address has
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TD-W8951ND
150Mbps Wireless N ADSL2+ Modem Router User Guide
expired, the user will be automatically assigned a new dynamic IP address. The default is
259200
seconds.
•
Physical Ports:
If a physical port is unchecked, the client connected to that port will not
be able to obtain IP address automatically although the DHCP function is enabled. All the
ports are checked by default.
•
DNS Relay:
If you want to disable this feature, you just need to set both Primary and
secondary DNS IP to 0.0.0.0. If you want to use DNS relay, you can setup DNS server IP
to 192.168.1.1 on their Computer. If not, the device will perform as no DNS relay.
•
Primary DNS Server:
Type in your preferred DNS server.
•
Secondary DNS Server:
Type in your preferred DNS server.
•
Current Pool Summary:
Click the button, then you can view the IP addresses that the
DHCP Server gives out.
)
Note:
If
Use Auto Discovered DNS Server Only
is selected in DNS Relay, this router will accept the
first received DNS assignment from one of the PPPoA, PPPoE or MER/DHCP enabled PVC(s)
during the connection establishment. If
Use User Discovered DNS Server Only
is selected in
DNS Relay, it is necessary for you to enter the primary and optional secondary DNS server IP
addresses. After type in the address, click SAVE button to save it and invoke it.
¾
DHCP Relay:
Select
Relay
, then you will see the next screen (shown in Figure 4-13), and the
Router will work as a DHCP Relay. A DHCP relay is a computer that forwards DHCP data
between computers that request IP addresses and the DHCP server that assigns the
addresses. Each of the device's interfaces can be configured as a DHCP relay. If it is enabled,
the DHCP requests from local PCs will forward to the DHCP server runs on WAN side. To
have this function working properly, please run on router mode only, disable the DHCP server
on the LAN port, and make sure the routing table has the correct routing entry.
Figure 4-13
•
DHCP Server IP for Relay Agent:
Enter the DHCP server IP Address runs on WAN
side.
)
Note:
If you select
Disabled
, the DHCP function will not take effect.
29
Page 38 / 91
TD-W8951ND
150Mbps Wireless N ADSL2+ Modem Router User Guide
4.3.3 Wireless
Choose “
Interface Setup
→
Wireless
” menu, and you will see the Wireless screen (shown in
Figure 4-14 ). Please configure the parameters for wireless according to the descriptions below.
Figure 4-14
30
Page 39 / 91
TD-W8951ND
150Mbps Wireless N ADSL2+ Modem Router User Guide
¾
Access point Settings:
These are the settings of the access point. You can configure the
rules to allow wireless-equipped computers and other devices to communicate with a wireless
network.
•
Access point:
Select Activated to allow wireless station to associate with the access
point.
•
Channel:
Select your region and the channel you want to use from the drop-down List of
Channel. This field determines which operating frequency will be used. It is not
necessary to change the default channel unless you notice interference problems with
another nearby access point.
•
Transmit Power:
Here you can specify the transmit power of Router. You can select
High, Medium or Low which you would like. High is the default setting and is
recommended.
•
Beacon Interval:
Enter a value between 20-1000 milliseconds. The Beacon Interval
value indicates the frequency interval of the beacon. A beacon is a packet broadcast by
the Router to synchronize the wireless network. The default value is 100.
•
RTS/CTS Threshold:
Should you encounter inconsistent data flow, only minor reduction
of the default value 2347 is recommended. If a network packet is smaller than the preset
RTS threshold size, the RTS/CTS mechanism will not be enabled. The Router sends
Request to Send (RTS) frames to a particular receiving station and negotiates the
sending of a data frame. After receiving an RTS, the wireless station responds with a
Clear to Send (CTS) frame to acknowledge the right to begin transmission. In most cases,
keep its default value of 2347.
•
Fragmentation Threshold:
This value specifies the maximum size for a packet before
data is fragmented into multiple packets. If you experience a high packet error rate, you
may slightly increase the Fragmentation Threshold. Setting the Fragmentation Threshold
too low may result in poor network performance. Only minor reduction of the default value
is recommended. In most cases, it should remain at its default value of 2346.
•
DTIM:
This value, between 1 and 255, indicates the interval of the Delivery Traffic
Indication Message (DTIM). A DTIM field is a countdown field informing clients of the next
window for listening to broadcast and multicast messages. When the Router has buffered
broadcast or multicast messages for associated clients, it sends the next DTIM with a
DTIM Interval value. Its clients hear the beacons and awaken to receive the broadcast
and multicast messages. The default value is 1.
•
Wireless Mode:
In the drop-down list you can select “802.11b”, “802.11g”, “802.11n”,
“802.11b+g”, “802.11g+n” and “802.11b+g+n”. “802.11b+g+n” allows 802.11b, 802.11g
and 802.11n wireless stations to connect to the Router.
31
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TD-W8951ND
150Mbps Wireless N ADSL2+ Modem Router User Guide
¾
11n Settings:
These are the settings of the 11n parameters. If “802.11n”, “802.11g+n” or
“802.11b+g+n” is selected for
Wireless mode
, these settings will be displayed.
•
Channel Bandwidth:
Select the Bandwidth you want to use from the drop-down List.
There are two options, “20 MHz” and “20/40 MHz”. If bigger bandwidth is selected, device
could transmit and receive data with higher speed.
•
Extension Channel:
If “20/40 MHz” is selected, this option will be displayed.
•
Guard Interval:
Select the guard interval you want from the drop-down list.
•
MCS:
Select the wireless transmission rate from the drop-down list. By default, the option
is AUTO.
¾
Multiple SSIDs Settings:
These are the settings of the SSID.
•
SSID Index:
The index of the SSID, and in this model, you can only leave it as a default
value of 1.
•
Broadcast SSID:
When wireless clients survey the local area for wireless networks to
associate with, they will detect the SSID broadcast by the Router. To broadcast the
Router’s SSID, keep the default setting. If you don’t want to broadcast the Router’s SSID,
select “No”.
•
Use WPS:
Use WPS (Wi-Fi Protected Setup) function, you can add a new wireless
device to an existing network quickly. To Use WPS, keep the default setting, and
configure the parameters in
WPS Settings
. If you don’t want to Use WPS, select “No”,
then you will see the screen as shown below.
Figure 4-15
•
SSID:
Wireless network name shared among all points in a wireless network. The SSID
must be identical for all devices in the wireless network. It is case-sensitive and must not
exceed 32 characters (use any of the characters on the keyboard). Make sure this setting
is the same for all stations in your wireless network. Type the desired SSID in the space
provided.
•
Authentication Type:
Select an authentication type from the drop-down list, which
allows you to configure security features of the wireless LAN interface. Options available
are: Disabled, WEP-64Bits, WEP-128Bits, WPA-PSK, WPA2-PSK, and WPA-PSK/
WPA2-PSK.
1)
WEP-64Bits
32

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