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Page 31 / 69 Scroll up to view Page 26 - 30
25
Chapter 6: Configuring the Wireless-N Access Point
The Wireless - Advanced Wireless Settings Tab
Wireless-N Access Point with Power Over Ethernet
The Wireless - Advanced Wireless Settings Tab
This screen allows you to configure the advanced settings for the Access Point. The Wireless-N adopts several
new parameters to adjust the channel bandwidth, and guard intervals to improve the data rate dynamically.
Linksys recommends to let your Access Point automatically adjust the parameters for maximum data throughput.
Advanced Wireless
You can change the following advanced parameters (some only for Wireless-N) for this Access Point. Wireless-N
data rates are classified into 16
MCS
numbers (0-15).
MCS
stands for Modulation and Coding Scheme. For the
same
MCS
number, the data rate changes according to the Channel Bandwidth and Guard Interval settings. You
can see the change through the drop-down menu of
Tx Rate Limiting (11n clients)
.
Channel Bandwidth
. You can select the channel bandwidth manually for Wireless-N connections. When it is set
to 20MHz, only the 20MHz channel is used. When it is set to 40MHz, Wireless-N connections will use 40MHz
channel but Wireless-B and Wireless-G will still use 20MHz channel. The default is
Auto
.
Guard Interval
. You can select the guard interval manually for Wireless-N connections. The two options are
Short
(400ns)
and
Long
(800ns)
. The default is
Auto
.
Tx Rate Limiting
(
11b clients
). This option provides rate limiting on Wireless-B connections. Wireless-B clients
can be limited to data rate specified by IEEE 802.11b. The default is
Auto
.
Tx Rate Limiting
(
11g clients
). This option provides rate limiting on Wireless-G connections. Wireless-G clients
can be limited to data rates specified by IEEE 802.11g and 802.11b. The default is
Auto
.
Tx Rate Limiting
(
11n clients
). This option provides rate limiting on Wireless-N connections. Wireless-N clients
can be limited to data rates specified by draft IEEE 802.11n, IEEE 802.11g, and 802.11b. The data rate associated
with each
MCS
number (0-15) changes according to your selection on Channel Bandwidth and Guard Interval.
The default is
Auto
.
CTS Protection Mode
. CTS (Clear-To-Send) Protection Mode function boosts the Access Point’s ability to catch
all wireless transmissions, but will severely decrease performance. Keep the default setting,
Auto
, so the Access
Point can use this feature as needed, when the Wireless-N/G products are not able to transmit to the Access Point
in an environment with heavy 802.11b traffic. Select
Disabled
if you want to permanently disable this feature.
WMM
. Wi-Fi Multimedia is a QoS feature defined by WiFi Alliance before IEEE 802.11e was finalized. Now it is
part of IEEE 802.11e. When it is enabled, it provides four priority queues for different types of traffic. It
automatically maps the incoming packets to the appropriate queues based on QoS settings (in IP or layer 2
header). WMM provides the capability to prioritize traffic in your environment. The default in
Enabled
. Select
Figure 6-16: Wireless - Advanced Wireless
Page 32 / 69
26
Chapter 6: Configuring the Wireless-N Access Point
The Wireless - Advanced Wireless Settings Tab
Wireless-N Access Point with Power Over Ethernet
High Performance (N-Only)
if you want to achieve highest throughput on 11n connections. Note that 11b and
11g clients performance will be affected by setting to this mode.
IOT Mode
. Interoperability Mode. Enabling this mode will help this AP to communicate with Linksys retail client
cards (e.g. WPC300N) at 11n rates. This mode is a temporary measure to cope with implementation differences
on 802.11n draft specification. This option will be removed eventually when IEEE802.11n is finalized. The default
is
disabled
.
Beacon Interval.
This value indicates the frequency interval of the beacon. A beacon is a packet broadcast by
the Access Point to keep the network synchronized. A beacon includes the wireless networks service area, the
Access Point address, the Broadcast destination addresses, a time stamp, Delivery Traffic Indicator Maps, and
the Traffic Indicator Message (TIM). The default is
100
ms.
DTIM Interval
. This value indicates how often the Access Point sends out a Delivery Traffic Indication Message
(DTIM). Lower settings result in more efficient networking, while preventing your PC from dropping into power-
saving sleep mode. Higher settings allow your PC to enter sleep mode, thus saving power, but interferes with
wireless transmissions. The default is
1
ms.
RTS Threshold.
This setting determines how large a packet can be before the Access Point coordinates
transmission and reception to ensure efficient communication. This value should remain at its default setting of
2347
. If you encounter inconsistent data flow, only minor modifications are recommended.
Change these settings as described here and click
Save Settings
to apply your changes, or click
Cancel
Changes
to cancel your changes. Help information is displayed on the right-hand side of the screen, and click
More
for additional details.
Page 33 / 69
27
Chapter 6: Configuring the Wireless-N Access Point
The Security Monitor Tab
Wireless-N Access Point with Power Over Ethernet
The Security Monitor Tab
On this screen you can enable or disable the security monitor feature of this Wireless Access Point. It also allows
you to create user accounts for system administrators to use this advanced feature.
This feature works together with WPC4400N and future Linksys Business Series wireless client adapters. A client
utility will be provided with the client card, which will allow you to download information from the Access Point.
The current version will support wireless Access Points and wireless clients detection and classification. Please
check Linksys.com for future updates on this powerful security feature.
Basic Settings
Wireless Security Monitor
Enabled/Disabled
. You can enable or disable the security monitor feature here. When it is enabled, the Access
Point will work with selected wireless PCs to monitor your wireless network. If you don’t plan to use the client
utility to actively monitor your network, you can disable this feature to improve your wireless network
performance. The default is
Disabled
.
Security Monitor Accounts
The section allows the system administrator to create accounts for the purpose of wireless security monitoring.
You can create one account at a time. The administrator will be able to use his WPC4400N client utility to log in
and get authenticated to the system after user accounts are created.
User Name.
Enter the user name of this account.
Password.
Enter the password of this account.
Re-enter to confirm.
Enter the password a second time to re-confirm it.
Identify.
You can create either an Administrator or User account by making the selection here. You can create one
Administrator account and five User accounts.
Click the
Add/Save
button to create an account. The accounts that are created will display in the table.
Change these settings as described here and click
Save Settings
to apply your changes, or click
Cancel
Changes
to cancel your changes. Help information is displayed on the right-hand side of the screen, and click
More
for additional details.
Figure 6-17: Security Monitor
Page 34 / 69
28
Chapter 6: Configuring the Wireless-N Access Point
The Administration - Management Tab
Wireless-N Access Point with Power Over Ethernet
The Administration - Management Tab
On this screen you can configure the password, Web Access, and SNMP settings.
Management
You should change the username/password that controls access to the Access Point’s Web-based Utility to
prevent unauthorized access.
Local AP Password
User Name
. Modify the administrator user name. The default is
admin
.
AP Password
. Modify the administrator password for the Access Point’s Web-based Utility. The default is
admin
.
Re-enter to confirm
. To confirm the new password, enter it again in this field.
Web Access
To increase the security on accessing the Web-based Utility, you can enable HTTPS. Once enabled, users need to
use
https://
when accessing the Web-based Utility.
Web HTTPS Access
. The default is
Disabled
.
Wireless Web Access
. Allow or deny wireless clients to access Web based Utility. The default is
Enabled
.
SNMP
SNMP is a popular network monitoring and management protocol. It provides network administrators with the
ability to monitor the status of the Access Point and receive notification of any critical events as they occur on the
Access Point.
To enable the SNMP support feature, select
Enabled
. Otherwise, select
Disabled
. The default is
Disabled
.
Figure 6-18: Administration - Management
Page 35 / 69
29
Chapter 6: Configuring the Wireless-N Access Point
The Administration - Management Tab
Wireless-N Access Point with Power Over Ethernet
This Access Point supports SNMP version 1, 2, and 3. Select
SNMP V1 & V2
if you don’t need the enhanced
capability on V3 or your management software does not support V3. Otherwise, select
SNMP V3
.
Identification
Contact
. Enter the name of the contact person, such as a network administrator, for the Access Point.
Device Name
. Enter the name you wish to give to the Access Point.
Location
. Enter the location of the Access Point.
User Name
. SNMPv3 only. Create a administrator account to access and manage the SNMP MIB objects.
Password
. SNMPv3 only. Enter the authentication password for administrator account (minimum length 8).
Passphrase
. SNMPv3 only. Enter the passphrase for data encryption on administrator’s management traffic.
Get Community
. Enter the password that allows read-only access to the Access Point’s SNMP information. The
default is
public
.
Set Community
. Enter the password that allows read/write access to the Access Point’s SNMP information. The
default is
private
.
SNMP Trap-Community
. Enter the password required by the remote host computer that will receive trap
messages or notices sent by the Access Point.
SNMP Trusted Host
. You can restrict access to the Access Point’s SNMP information by IP address. Enter the IP
address in the field provided. If this field is left blank, then access is permitted from any IP address.
SNMP Trap-Destination
. Enter the IP address of the remote host computer that will receive the trap messages.
Change these settings as described here and click
Save Settings
to apply your changes, or click
Cancel
Changes
to cancel your changes. Help information is displayed on the right-hand side of the screen, and click
More
for additional details.

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