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ProSafe Dual Band Wireless-NAccess Point WNDAP350 Reference Manual

Figure 3-12View network statistics

2. ClickRefresh to update the Statistics information for each interface.

Table 3-2,shown below, describes the information fields detailed on the Statistics screen.

Table 3-2.Statistics Fields

Field

Description

 

 

Wired Ethernet

 

 

 

Packets

The number of packets sent and received since the WNDAP350 was

 

restarted.

 

 

Bytes

The number of bytes sent and received since the WNDAP350 was

 

restarted.

 

 

Wireless 11b/bg/ng

 

 

 

Unicast Packets

The Unicast packets sent and received in 802.11n/g mode since the

 

WNDAP350 was restarted.

Broadcast Packets

The Broadcast packets sent and received in 802.11n/g mode since the

 

WNDAP350 was restarted.

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Table 3-2.Statistics Fields

Field

Description

 

 

Multicast Packets

The Multicast packets sent and received in 802.11n/g mode since the

 

WNDAP350 was restarted.

 

 

Total Packets

The Wireless packets sent and received in 802.11n/g mode since the

 

WNDAP350 was restarted.

 

 

Total Bytes

The Wireless bytes sent and received in 802.11n/g mode since the

 

WNDAP350 was restarted.

 

 

Wireless 11n/na

 

 

 

Unicast Packets

The Unicast packets sent and received in 802.11n/a mode since the

 

WNDAP350 was restarted.

 

 

Broadcast Packets

The Broadcast packets sent and received in 802.11n/a mode since the

 

WNDAP350 was restarted.

 

 

Multicast Packets

The Multicast packets sent and received in 802.11n/a mode since the

 

WNDAP350 was restarted.

 

 

Total Packets

The Wireless packets sent and received in 802.11n/a mode since the

 

WNDAP350 was restarted.

 

 

Total Bytes

The Wireless bytes sent and received in 802.11n/a mode since the

 

WNDAP350 was restarted.

 

 

Viewing Available Wireless Station Statistics

The Available Wireless Stations List (AWSL) contains a table of all IP devices associated with this wireless access point in the wireless network defined by the Wireless Network Name (SSID). For each device, the table shows the MAC address, BSSID, SSID, Channel, Rate, State (whether the device is allowed to communicate with the wireless access point or not), Type, AID, Mode, and Status.

Note: A wireless network can include multiple wireless access points, all using the same network name (SSID). This enables extending the reach of the wireless network and allows users to roam from one access point to another, providing seamless network connectivity. Under these circumstances, be aware that only the stations associated with this access point will be presented in the Available Station List.

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To view the Available Wireless Stations List:

1.Under the Monitoring tab, selectWireless Stations on the main menu. The Available Wireless Stations list displays, as shown inFigure 3-13.

Figure 3-13Available Wireless Stations list

2. ClickRefresh to update the list.

Tip: If the wireless access point is rebooted, the table data is lost until the wireless access point rediscovers the devices. To force the wireless access point to look for associated devices, click theRefresh button.

Enabling Rogue AP Detection

The WNDAP350 can detect rogue APs and wireless stations and show their details to the administrator.

To enable Rogue AP Detection:

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1.Under the Configuration tab on the main menu, selectSecurity, selectAdvanced from the sidebar, and then selectRogue AP. The Rogue AP screen displays, as shown inFigure 3-8 below.

Figure 3-14Enable Rogue AP detection

2.Check the Turn Rogue AP Detection On radio box to enable rogue AP detection and click

Apply.

If you enable Rogue AP Detection, the AP continuously scans the wireless network and collects information about all APs heard on its channel.

3.You can Import AP List from a File. See “Importing Rogue AP List from a File” on page 3-18 for more information.

4.Under the Unknown AP List, click Refresh to discover the APs.

5.Click Move to add any AP to the Known AP List.

6.Click Delete to remove an AP from the Known AP List.

7.Click Apply to save your change.

Importing Rogue AP List from a File

To replace the existing AP list:

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1.Create a text file that contains the MAC address of each known AP, separated by a space. The following example shows a list of six known APs that an administrator might upload to the AP:

00:0c:41:d7:ee:a5 00:0f:b5:92:cd:49 00:12:17:70:85:3d 00:14:bf:ae:b1:e4 00:40:f4:f8:47:03 00:0c:41:d7:ee:b4

2.Select Replace to replace the existing list of known APs, or selectMerge to add the new MAC addresses to the existing list.

3.Click Browse and navigate to the location where you saved the text file.

4.Select the file and click Open.

5.Click Import to upload the list to the AP.

To import the list from an existing file:

1.Click Browse and navigate to the location where you saved the text file.

2.Select the file and click Open.

3.Click Import to upload the list to the AP.

Viewing Rogue AP Statistics

The WNDAP350 can detect rogue APs and wireless stations and show a complete list of unknown or known APs to the administrator.

To view the Rogue AP list:

1.Under the Monitoring tab on the main menu, selectRogue AP. SelectUnknown AP List.The following screen displays with a list of unknown APs:

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Figure 3-15Unknown APs list

2.Click Refresh to refresh the list.

3.Click Save to export the list of unknown APs to a file. A window opens so you can browse to the location where you want to save the file.

To view the list of known APs:

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1.Under the Monitoring tab on the main menu, selectRogue AP. SelectKnown AP List.The following screen displays with a list of known APs:

Figure 3-16Known APs list

2.Click Refresh to refresh the list.

3.Click Save to export the list of known APs to a file. A window opens so you can browse to the location where you want to save the file.

Packet Capture

The packet capture option is available under the Monitoring >Packet Capture tab. Use this option for troubleshooting association problems. You can capture all packets transmitted and received by the AP and save them inpcap format for analysis by any standard sniffer tool such as

WireShark or OmniPeek.

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The packet capture screen is shown below:

Figure 3-17Packet capture screen

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Chapter 4

Advanced Configuration

This chapter describes how to configure the advanced features of your ProSafe Dual Band Wireless-NAccess Point WNDAP350. The advanced configuration features are located under varioussub-menusunderConfiguration and provide the following functions:

IP Settings. Using the wireless access point as a DHCP server for wireless clients (“IP Settings for Wireless Clients).

Hotspot settings. Enabling HTTP redirect (“Hotspot Settings).

Wireless Settings: Configuring advanced wireless LAN parameters (“Configuring Advanced Wireless Settings).

Advanced QoS Settings: Configuring advanced QoS settings (“Configuring Advanced QoS Settings)

Access Point Settings: Enabling wireless bridge modes (“Enabling Wireless Bridging).

IP Settings for Wireless Clients

You can turn the WNDAP350 into a DHCP Server for wireless clients for both DHCP-enabledwireless clients. The default advanced IP wireless settings usually work well. This feature is intended for use by a systems administrator. By default, this feature is not enabled.

To use this wireless access point as a DHCP server:

1.From the main menu under Configuration, selectIP, and then selectDHCP Server Settings. The DHCP Server Settings screen displays (seeFigure 4-1).

2.DHCP Server is disabled by default. Select the Enable radio button to enable this wireless access point as a DHCP server.

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.

Figure 4-1DHCP server settings

3.Configure the following TCP/IP configurations for using the WNDAP350 as a DHCP Server for wireless clients.

DHCP Server: By default, the Dynamic Host Configuration Protocol (DHCP) server on the AP is disabled. If you enable it, all the wireless clients associated with the AP will get their IP addresses, subnet mask and default gateway settings automatically from the AP.

DHCP Server VLAN ID: All the stations that are part of the configured VLAN ID will get their IP addresses only from the AP.

Starting IP Address: Enter the starting IP address that can be assigned from the DHCP server on this Access Point.

Ending IP Address: Enter the Ending IP address that can be assigned from the DHCP server on this Access Point

Subnet Mask: The Access Point will assign the specified subnet mask to the connected wireless stations.

Gateway Address: The Access Point will assign this IP address as the default gateway for any traffic beyond the local network.

Primary DNS Server: The Access Point will assign this IP address as the primary Domain Name Server used by the connected wireless stations.

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Secondary DNS Server: The Access Point will assign this IP address as the secondary Domain Name Server used by the connected wireless stations.

Primary WINS Server: The Access Point will assign this IP address as the primary WINS Server used by the connected wireless stations.

Secondary WINS Server: The Access Point will assign this IP address as the secondary WINS Server used by the connected wireless stations.

Lease: The lease time for the IP address assigned. The wireless client user is required to renew the IP address as soon as the lease is expired.

4.Click Apply to save your settings.

Hotspot Settings

If you want the wireless access point to capture and redirect the first HTTP (TCP, port 80) request, use this feature to “capture” and redirect the HTTP request to the specified URL. For example, a hotel might want all wireless connections to go to its server to start a billing transaction.

Figure 4-2Hotspot settings

To set up a Hotspot server:

1.From the main menu under Configuration, selectSystem, then selectAdvanced.

2.From the sidebar, select Hotspot. The Hotspot screen displays, as shown inFigure 4-2.,with the following fields:

HTTP Redirect: Enable HTTP Redirect.

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Redirect URL: Enter the URL of the Web server where you wish to redirect HTTP (port 80) requests.

3.Click Apply. All port 80 requests will now be redirected to the specified URL.

Configuring Advanced Wireless Settings

The Advanced option of the Wireless Settings menu is used to configure and enable various wireless LAN parameters for both the 11a/na and 11b/bg/ng modes. The default wireless LAN parameters usually work well. However, you can use these settings to fine tune the overall performance of your wireless access point for your environment.

The Wireless Settings option of the Advanced menu is used to configure the Wireless LAN parameters. The default advanced wireless LAN parameter settings usually work well.

Configuring 802.11b/bg/ng Advanced Wireless Settings

To configure advanced Wireless Settings:

1.Under the Configuration tab, selectWireless.

2.From the sidebar, select Advanced, and then selectWireless Settings.

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3.Select the 802.11b/bg/ng tab. The Advanced Wireless Settings screen you selected displays, as shown inFigure 4-3.,

Figure 4-3Advanced Wireless Settings - 802.11b/bg/ng

4.Enter the appropriate information in the fields described below:

RTS Threshold (0 - 2347): Request to Send Threshold. The packet size that is used to determine if it should use the CSMA/CD (Carrier Sense Multiple Access with Collision Detection) mechanism or the CSMA/CA mechanism for packet transmission. With the CSMA/CD transmission mechanism, the transmitting station sends out the actual packet as soon as it has waited for the silence period. With the CSMA/CA transmission mechanism, the transmitting station sends out an RTS packet to the receiving station, and waits for the receiving station to send back a CTS (Clear to Send) packet before sending the actual packet data. The default is 2347.

Fragmentation Length (256 - 2346): This is the maximum packet size used for fragmentation. Packets larger than the size programmed in this field will be fragmented. The Fragmentation threshold value must be larger than the RTS threshold value. The default is 2346.

Beacon Interval (100 - 1000): The Beacon Interval. Specifies the interval time between 100ms and 1000ms for each beacon transmission, which allows the access point to synchronize the wireless network. The default is 100.

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Aggregation Length (1024-65535) (11ng): The aggregation length defines the size of aggregated packets. Larger aggregation lengths may sometimes lead to better network performance. The default is 65535.

A-MPDU (11ng): Aggregated MAC Protocol Data Unit. Aggregates several MAC frames into a single large frame to achieve higher throughput. The default is enabled.

RIFS Transmission (11ng): Reduced Interframe Space. RIFS transmissions are shorter than other interframe spaces, and if enabled allow transmission of successive frames at different transmit powers. The default is disabled.

DTIM Interval: The Delivery Traffic Indication Message. Specifies the data beacon rate between 1 and 255. The default is 3.

Preamble Type (11b/bg only): A long transmit preamble may provide a more reliable connection or a slightly longer range. A short transmit preamble gives better performance. The Auto settings automatically handles both long and short preambles. The default is Auto.

Antenna: Enable the internal or external antenna. The internal antenna is enabled by default.

802.11d: Enable this option to include support for "additional regulatory domains" that are not in the current standard.

Client Isolation: This option, when enabled, blocks communication between wireless clients that are associated to different VAPs. The default is Disable.

Max Wireless Clients: The number of wireless clients that can associate with the AP at one time. The default is 63.

5.Click Apply to enable the Wireless Settings.

Configuring 802.11a/na Advanced Wireless Settings

To configure advanced Wireless Settings:

1.Under the Configuration tab, selectWireless.

2.From the sidebar, select Advanced, and then selectWireless Settings.

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3.Select the 802.11a/na tab. The Advanced Wireless Settings screen you selected displays, as shown inFigure 4-3.,

Figure 4-4Advanced Wireless Settings - 802.11n/na

4.Enter the appropriate information in the fields described below:

RTS Threshold (0 - 2347): Request to Send Threshold. The packet size that is used to determine if it should use the CSMA/CD (Carrier Sense Multiple Access with Collision Detection) mechanism or the CSMA/CA mechanism for packet transmission. With the CSMA/CD transmission mechanism, the transmitting station sends out the actual packet as soon as it has waited for the silence period. With the CSMA/CA transmission mechanism, the transmitting station sends out an RTS packet to the receiving station, and waits for the receiving station to send back a CTS (Clear to Send) packet before sending the actual packet data. The default is 2347.

Fragmentation Length (256 - 2346): This is the maximum packet size used for fragmentation. Packets larger than the size programmed in this field will be fragmented. The fragmentation threshold value must be larger than the RTS Threshold value. The default is 2346.

Beacon Interval (100 - 1000): The Beacon Interval. Specifies the interval time between 100ms and 1000ms for each beacon transmission, which allows the access point to synchronize the wireless network. The default is 100.

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Aggregation Length (1024-65535)(11na only): The aggregation length defines the size of aggregated packets. Larger aggregation lengths may sometimes lead to better network performance. The default is 65535.

A-MPDU (11na only): Aggregated MAC Protocol Data Unit. Aggregates several MAC frames into a single large frame to achieve higher throughput. The default is enabled.

RIFS Transmission (11na only): Reduced Interframe Space. RIFS transmissions are shorter than other interframe spaces, and if enabled allow transmission of successive frames at different transmit powers. The default is disabled. The default is disabled.

DTIM Interval: The Delivery Traffic Indication Message. Specifies the data beacon rate between 1 and 255. The default is 3.

Client Isolation: This option, when enabled, blocks communication between wireless clients that are associated to different VAPs. The default is Disable.

Max Wireless Clients: The number of wireless clients that can associate with the AP at one time. The default is 63.

5.Click Apply to enable the Wireless Settings.

Configuring Advanced QoS Settings

Wireless Multimedia Extension (WME) or Wi-FiMultimedia (WMM) is a subset of the 802.11e standard. WME allows wireless traffic to have a range of priorities, depending on the type of data.Time-dependentinformation, such as video or audio, has a higher priority than normal traffic. For WME to function correctly, Wireless clients must also support WME.

Figure 4-5 shows the Quality of Service (QoS) screen. For most networks, the default QoS queue parameter settings work well.Quality of Service provides you with the ability to specify parameters on multiple queues for increased throughput and better performance of differentiated wireless traffic, likeVoice-over-IP(VoIP), other types of audio, video, and streaming media, as well as traditional IP data.

To configure advanced QoS settings, on the Configuration tab selectWireless, selectAdvanced, and then selectQoS Settings. The QoS Settings screen dis pa lys:

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Figure 4-5Advanced QoS settings

The QoS options on the WNDAP350 are as follows:

AP EDCA Parameters. Specify the AP EDCA (Enhanced Distributed Channel Access) parameters for different types of data transmitted from the WNDAP350 wirelss access point to the wireless client.

Station EDCA Parameters. Specify the Station EDCA parameters for different types of data transmitted from the wireless client to the WNDAP350 wirelss access point. If WMM is disabled, you cannot configure Station EDCA parameters.

Table 4-1 describes the settings for QoS Queues.

Table 4-1.QoS Queues and Parameters

QoS Queue

Description

 

 

Data 0 (Voice)

High priority queue, minimum delay. Time-sensitivedata such as VoIP

 

and streaming media are automatically sent to this queue.

 

 

Data 1(Video)

High priority queue, minimum delay. Time-sensitivevideo data is auto-

 

matically sent to this queue.

 

 

Data 2 (Best Effort)

Medium priority queue, medium throughput and delay. Most traditional

 

IP data is sent to this queue.

 

 

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Table 4-1.QoS Queues and Parameters

QoS Queue

Description

 

 

Data 3 (Background)

Lowest priority queue, high throughput. Bulk data that requires maxi-

 

mum throughput and is not time-sensitiveis sent to this queue (FTP

 

data, for example).

 

 

AIFS (Arbitration Inter-Frame

Specifies a wait time (in milliseconds) for data frames. Valid values for

Space)

AIFS are 1 through 255.

 

 

cwMin (Minimum Contention

Upper limit (in milliseconds) of a range from which the initial random

Window)

backoff wait time is determined. Valid values for the “cwmin” are 1, 3, 7,

 

15, 31, 63, 127, 255, 511, or 1024. The value for cwMin must be lower

 

than the value for cwMax.

 

 

cwMax (Maximum Contention

Upper limit (in milliseconds) for the doubling of the random backoff

Window)

value. Valid values for the “cwmax” are 1, 3, 7, 15, 31, 63, 127, 255,

 

511, or 1024. The value for cwMax must be higher than the value for

 

cwMin.

 

 

Max. Burst Length

Specifies (in milliseconds) the Maximum Burst Length allowed for

 

packet bursts on the wireless network. A packet burst is a collection of

 

multiple frames transmitted without header information. Valid values for

 

maximum burst length are 0.0 through 999.9.

 

 

Enabling Wireless Bridging

The ProSafe Dual Band Wireless-NAccess Point WNDAP350 lets you build large bridged wireless networks. Select the desired wireless access point mode for your environment:

Wireless Point-to-Point Bridge. In this mode, the WNDAP350 can communicate with another bridge mode wireless access point. Select theEnable Wireless Client Association option to enable wireless clients to associate with this access point.

When you click the Edit button, you must enter the Profile Name and the MAC address (physical address) of the other Bridge mode wireless access point in the fields provided. WEP,WPA-PSK,orWPA2-PSKare supported.WPA2-PSKcan (and should) be used to protect this communication.

Wireless Point-to-Multi-Point Bridge. Select this only if this WNDAP350 is the “Master” for a group ofbridge-modewireless access points. Select theEnable Wireless Client Association option to enable wireless clients to associate with this access point.

The other bridge-modewireless access points must be set topoint-to-pointbridge mode, using the MAC address of this WNDAP350. They then send all traffic to this “Master”, rather than communicate directly with each other.

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When you click the Edit button, you must enter the profile name and the MAC address (physical address) of the other bridge mode wireless station in the fields provided. WEP,WPA-PSK,orWPA2-PSKare supported.WPA2-PSKcan (and should) be used to protect this communication.

The screens used to configure these options are located by selecting Wireless Bridge under theConfiguration tab (seeFigure 4-6 below).

Figure 4-6Enable WirelessPoint-to-PointBridge

To configure bridge settings on the Bridging page shown in Figure 4-6 above, follow these steps:

1.Select the Enable Wireless Bridgingoption.

2.Select one of the bridge mode options, Wireless Point to Point Bridge, or Wireless Point toMulti-PointBridge.

3.Select Enable Wireless Client Association, if you wish.

4.Click Edit to edit the security profile of the wireless bridge settings, as shown inFigure 4-7 below.

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Figure 4-7Bridging - Edit WDS Security Profile

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