TRENDnet TEW-740APBO User Manual

TRENDnet User’s Guide

Cover Page

TRENDnet User’s Guide

TEW-740APBO

Contents

Product Overview ........................................................................... 4

Package Contents .......................................................................................................... 4

Features ......................................................................................................................... 4

Product Hardware Features........................................................................................... 5

Application Diagram ...................................................................................................... 7

Setup & Installation ........................................................................ 8

Note the Wireless MAC Addresses ................................................................................ 8

Setup Guide Assumed Defaults ........................................................................... 8

TEW-740APBO #1 Configuration ................................................................................... 9

TEW-740APBO #2 Configuration ................................................................................. 11

Verify Point-to-Point Configuration/Connectivity ....................................................... 12

Grounding Wire Installation ........................................................................................ 13

Waterproof Kit Installation .......................................................................................... 13

Mounting Hardware Installation ................................................................................. 16

Pole Mounting ................................................................................................... 16

Wall Mounting ................................................................................................... 17

Completed Point to Point Setup and Pole Mount Installation Example ...................... 18

Installation Tips ............................................................................................................ 19

Application Modes ........................................................................ 20

AP Mode (Access Point Mode) .................................................................................... 20

WDS Mode (Pure WDS) ............................................................................................... 21

Client Bridge + Universal Repeater Mode ................................................................... 22

CPE + AP Mode (Router Client + Access Point) ............................................................ 22

AP Mode Configuration ................................................................. 23

External Network Connection...................................................................................... 23

Network Requirement ....................................................................................... 23

Configure LAN IP .......................................................................................................... 23

Wireless LAN Network ................................................................................................. 25

Wireless General Setup ..................................................................................... 25

Wireless Advanced Setup .................................................................................. 25

Wireless WMM QoS Setup ................................................................................ 27

Create Virtual AP (VAP) ..................................................................................... 29

Virtual AP Setup ................................................................................................. 30

Wireless MAC Filter Setup ................................................................................. 32

Wireless Network Expansion ............................................................................. 32

System Status .............................................................................................................. 33

System Overview ............................................................................................... 33

Associated Clients Status ................................................................................... 34

Show WDS Link Status ....................................................................................... 34

Extra Information............................................................................................... 35

Event Log ........................................................................................................... 36

WDS Mode Configuration ............................................................. 37

External Network Connection ..................................................................................... 37

Network Requirement ....................................................................................... 37

Configure LAN IP .......................................................................................................... 37

Wireless Network Expansion ....................................................................................... 38

Wireless General Setup ..................................................................................... 38

Wireless Advanced Setup .................................................................................. 39

Wireless WMM QoS Setup ................................................................................ 40

WDS Setup ......................................................................................................... 42

System Status .............................................................................................................. 42

System Overview ............................................................................................... 42

Extra Information............................................................................................... 43

Event Log ........................................................................................................... 44

WDS Link Status ................................................................................................. 45

Repeater Mode ............................................................................. 46

External Network Connection ..................................................................................... 46

Network Requirement ....................................................................................... 46

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Configure LAN IP .......................................................................................................... 46

Access Control ............................................................................................................. 74

Wireless Network Expansion ....................................................................................... 47

Wireless General Setup ..................................................................................... 47

Wireless Advanced Setup .................................................................................. 48

Wireless WMM QoS Setup ................................................................................ 50

Site Survey ......................................................................................................... 51

Repeater AP Setup ............................................................................................. 52

Wireless MAC Filter Setup ................................................................................. 54

Create Wireless Profile ...................................................................................... 54

Bandwidth Control ............................................................................................. 56

Configure SNMP Setup ...................................................................................... 56

Configure Time Policy ........................................................................................ 57

System Status .............................................................................................................. 58

System Overview ............................................................................................... 58

DHCP Client ........................................................................................................ 59

Extra Information ............................................................................................... 59

Event Log ........................................................................................................... 60

Associated Client List ......................................................................................... 60

Remote AP status............................................................................................... 61

CPE + AP Mode Configuration ........................................................ 61

External Network Connection...................................................................................... 61

Network Requirement ....................................................................................... 61

Configure CPE Setup .................................................................................................... 62

Configure DDNS Setup ....................................................................................... 63

Configure LAN IP ................................................................................................ 63

Configure Static IP address ................................................................................ 65

Access Point Association .............................................................................................. 65

Wireless General Setup ..................................................................................... 65

Wireless Advanced Setup .................................................................................. 66

Wireless WMM QoS Setup ................................................................................ 67

Site Survey ......................................................................................................... 69

Create Wireless Profile ...................................................................................... 69

AP Setup ............................................................................................................. 71

Wireless AP MAC Filter Setup ............................................................................ 73

DMZ ................................................................................................................... 74

IP Filter Setup .................................................................................................... 74

MAC Filter Setup ................................................................................................ 75

Virtual Server ..................................................................................................... 75

Bandwidth Control ............................................................................................. 76

Routing .............................................................................................................. 76

Status ........................................................................................................................... 76

System Overview ............................................................................................... 77

DHCP Client ........................................................................................................ 77

Extra Information............................................................................................... 78

Event Log ........................................................................................................... 79

Associated Client List ......................................................................................... 79

Remote AP status .............................................................................................. 79

System Management .................................................................... 81

Configure Management ..................................................................................... 81

Configure System Time ...................................................................................... 82

Configure SNMP Setup ...................................................................................... 82

Enable UPNP ...................................................................................................... 83

Backup / Restore and Reset to Factory ............................................................. 83

Firmware Upgrade ............................................................................................. 84

Network Utility .................................................................................................. 84

Reboot ............................................................................................................... 85

Technical Specifications ................................................................ 86

Appendix ...................................................................................... 88

TRENDnet User’s Guide

TEW-740APBO

Product Overview

Features

TRENDnet’s 10dBi Wireless N300 Outdoor PoE Access Point., model TEW-740APBO, provides Wireless N300 building-to-building connectivity. A variety of installation scenarios are facilitated with Access Point (AP), Wireless Distribution System (WDS), Repeater, and CPE + AP modes. The IP67 rated housing comes with wall and pole mounting hardware.

Multi-Mode Support

Supports Access Point (AP), Wireless Distribution System (WDS), Repeater, and Wireless Client modes

Wireless N300 (2.4 GHz)

Compliant with 802.11n/g/b technology (2.4 GHz) with data rates up to 300 Mbps*

Outdoor Rated

Durable enclosure with an IP67 outdoor weather rating

TEW-740APBO

Package Contents

 TEW-740APBO  CD-ROM (Software & User’s Guide)  Quick Installation Guide  Power adapter (48V DC, 0.5A)  Proprietary PoE injector  Waterproof RJ-45 kit  Grounding wire  Mounting hardware

Directional Antenna

Built in 10 dBi directional antenna

Power over Ethernet (PoE)

Comes with a proprietary PoE injector, so that it can connect a regular non-PoE switch

Logs

Real time logs and statistics help troubleshooting

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IP67 Weather Rated Housing with built-in directional sector

Encrypted Wireless

Support for wireless encryption of up to WPA2

Product Hardware Features

Front View

Multiple SSIDs

Create up to eight additional SSIDs

Compatibility

Compatible with legacy wireless devices

Mounting Hardware

Pole and wall mount hardware included

* Effective wireless coverage may vary depending on the wireless device's output power, antenna gain, antenna alignment, receiving sensitivity, and radio interference. Additionally environmental factors such as weather conditions, physical obstacles, and other considerations may affect performance. For optimal results, we recommended consulting a professional installer for site survey, safety precautions, and proper installation.

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Bottom View

 LAN Port – You will need to unscrew the protective cover to gain access to this

port. The Ethernet LAN port operates at 10/100Mbps and is also used to supply

power to the device using only the included proprietary PoE injector.

 Proprietary PoE Injector –

o POWER IN – Connect the included power adapter connector to this

input and adapter side into an AC power source to supply power to the injector.

o P+DATA OUT – Connect an Ethernet RJ-45 cable to this output and the

other side to the device LAN port to supply power to the device.

o 10/100 DATA IN – Connect an Ethernet RJ-45 cable to this input and

connect the other to your network or directly to computer for initial device setup.

 Reboot/Reset Button – You will need to unscrew the protective cover or

disconnect the RJ-45 waterproof kit if it is installed to gain access to this button. Press and hold this button for 2 seconds and release to reboot the device. Press and hold this button for 10 seconds and release to reset the device to factory defaults.

 Power LED – The indicator will turn when the device is powered on.  WLAN Connection Quality Indicators – The connection quality indicators will

turn on depending on the connection quality during installation. These indicators can help to assist with optimal placement and positioning during mounting/hardware installation.

Good Connection Quality

Better Connection Quality

Best Connection Quality

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TEW-740APBO

 Ground Screw Fitting – The ground screw is built into the device housing. The

fitting can be identified on the back of the housing by checking for the ground symbol. The included ground screw and wire can be used to attached the device to a known grounding point. (ex. Earth driven rod, grounded electrical system, building frame, etc.)

Application Diagram

The example application displays two TEW-740APBO access points are configured in WDS pointto-point bridge mode and establishing a wireless link between each and other, allowing for network connectivity between two buildings over a point-to-point wireless link.

TRENDnet User’s Guide

TEW-740APBO

Setup & Installation

The intended purpose and application for this product is to extend network connectivity across long physical distances outside of an area or building that lacks local connectivity using point to point wireless bridge capability using 802.11 standards. Although this product supports multiple wireless modes, the basic installation will only cover the primary application of point to point wireless connectivity.

Minimum Requirements

 Computer with RJ-45 Ethernet port and web browser  2 x RJ-45 Ethernet cables (not included)  Phillips screwdriver (not included)

Important Note:

The access point does not support standard IEEE 802.3at/af PoE/PoE+. Only the included proprietary PoE injector may be used to supply power to the access point. For safety, use only the included PoE injector to supply power to the access point.

It is strongly recommended that you configure the access points first before mounting them in their desired locations.

Access Point Default Settings

LAN IP Address: 192.168.10.100 LAN Subnet Mask: 255.255.255.0 User: admin Password: admin

The following steps assume you are setting up and installation two TRENDnet TEW740APBO access points in point to point configuration.

Note the Wireless MAC Addresses

Please check the device label on both access points and write down or note the item labeled MAC1 from both access points. MAC1 is the wireless MAC address assigned to each access point and will be used later in the configuration steps.

Setup Guide Assumed Defaults

In this guide, we will assume the following defaults and settings:

 TEW-740APBO #1 MAC1: 00:11:22:33:44:55  TEW-740ABPO #2 MAC1: AA:BB:CC:DD:EE:FF  Network Router/Gateway IP Address/Netmask: 192.168.10.1 / 255.255.255.0  Network Router/Gateway DHCP IP Pool: 192.168.10.101-192.168.10.199

Note: Please note that if your existing network router/gateway IP address/subnet settings are different than the network settings assumed above, you will need to modify the assigned IP configuration to each access point accordingly to within you specific subnet.

Before mounting the access points in their desired locations, please configure access points first.

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TEW-740APBO

TEW-740APBO #1 Configuration

1. Connect the power adapter connector side to the POWER IN on the included proprietary PoE injector and the adapter to an AC power source.

Note: EU model also include an on/off power switch. Please make sure to switch to the (On/-) position.

2. Connect an RJ-45 Ethernet cable from the access point LAN port to the P+DATA OUT on the included proprietary PoE injector.

3. Connect an RJ-45 Ethernet cable from the computer to the 10/100 DATA IN on the included proprietary PoE injector.

6. Open your web browser and type in the IP address of the access point in the address bar, then press Enter. The default IP address of the access point is 192.168.10.100.

7. When prompted to login, enter the default user name and password and click OK. Default User Name: admin Default Password: admin

4. The access point power LED will turn on to indicate the device is receiving power.

5. Assign a static IP address to your computer network adapter in the subnet of

192.168.10.x (ex. 192.168.10.10) and subnet mask of 255.255.255.0.

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8. At the Password Setup page, enter your new password in the New admin Password field and once again in the Check admin Password field to confirm, then click Save to apply the new password settings.

Note: It is recommended to change to a strong admin password. This is the password that will be used to login to the access point management configuration web page.

11. Click System and click on Operating Mode. In the list, select WDS and click on Save & Reboot to apply the settings.

9. In the access point management web page, click on System and click on LAN.

10. Under Static IP, enter the IP address settings below, then scroll down and click Save to apply the settings. After changes are applied, you will need to login to the new IP address assigned.

Note: Please note that if your existing network IP subnet is different. You must assign IP addresses available in your IP subnet to the access points accordingly.

TEW-740ABO #1 IP Configuration

IP Address: 192.168.10.50 IP Netmask: 255.255.255.0 IP Gateway: 192.168.10.1

12. Click on Wireless and click on General. You can choose to change the Channel settings but they must match on both access points to establish a point-to-point WDS configuration. For this example, we will leave as the default channel 6. If you decide to change it, make sure to scroll down and click Save to apply the setting.

13. Click on Wireless and click on Virtual AP. For VAP0, click on Edit.

14. You can choose to change the ESSID (Wireless Network Name) settings but they must match on both access points to establish a point-to-point WDS configuration. For this example, we will leave as the default setting TRENDnet7400_2.4GHz.

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15. Under WDS Setup, set the Service setting to Enable.

16. In the first field for item 1, check the Enable option and in the WDS Peer’s MAC Address fields, enter the MAC address of the 2nd TEW-740ABPO (TEW-740APBO #2 MAC1: AA:BB:CC:DD:EE:FF) noted earlier in this guide. Description field is optional.

Note: You will need to enter the wireless MAC address of your 2nd access point as the one below is only used as an example in this guide.

TEW-740APBO #2 Configuration

1. Repeat the same TEW-740APBO #1 configuration steps 1-9 for TEW-740ABPO #2.

2. On the TEW-740APBO #1 configuration step 10, use the IP configuration settings below for TEW-740APBO #2.

Note: Please note that if your existing network IP subnet is different. You must assign IP addresses available in your IP subnet to the access points accordingly.

TEW-740ABO #2 IP Configuration

IP Address: 192.168.10.51 IP Netmask: 255.255.255.0 IP Gateway: 192.168.10.1

17. In the Security Type field above, it is recommended to select AES and assign a passphrase. It is not required to create a point-to-point WDS link but strongly recommended. This setting must match on both access points.

If you decide to apply encryption and assign a passphrase, select AES. Then scroll down to the bottom under the AES section and enter Passphrase. The security type and key must match on both access points. Then click Save to save the settings.

Note: It is strongly recommended to assign strong passphrase. We are only using the encryption key 1234567890 as an example in this guide.

18. At the top of the page, click Reboot, then click the Reboot button on the GUI page to commit all of the changes. This completes the configuration for TEW-740APBO #1.

3. Repeat the same TEW-740APBO #1 configuration steps 11-15 for TEW-740ABPO #2.

4. On the TEW-740APBO #1 configuration step 16, enter the MAC address of the 1st TEW-740ABPO (TEW-740APBO #1 MAC1: 00:11:22:33:44:55) noted earlier in this guide. Description field is optional.

Note: You will need to enter the wireless MAC address of your 1st access point as the one below is only used as an example in this guide.

5. Repeat the same TEW-740APBO #1 configuration steps 11-18 to complete the TEW740ABPO #2 configuration. This completes the configuration for TEW-740APBO #2

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TEW-740APBO

Verify Point-to-Point Configuration/Connectivity

1. Make sure both access points (TEW-740APBO #1 and TEW-740APBO #2) powered on and positioned pointing toward each other.

2. With the static IP address still assigned from the setup guide, connect your computer to one of the access points via LAN port.

3. On your computer, open a command prompt/terminal window and run a ping command to test connectivity to both access point IP addresses 192.168.10.50 and 192.168.10.51. Example of successful ping replies below from both access points. You can also check if you can access both access point web management pages through a web browser. C:\Users\trendnet>ping 192.168.10.50 Pinging 192.168.10.50 with 32 bytes of data:

Reply from 192.168.10.50: bytes=32 time<1ms TTL=128

C:\Users\trendnet>ping 192.168.10.51 Pinging 192.168.10.51 with 32 bytes of data:

Reply from 192.168.10.51: bytes=32 time<1ms TTL=128

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TEW-740APBO

Grounding Wire Installation

To install the grounding wire, align one end of the ground wire over the ground fitting, then secure the wire using the included screw and washer as shown below.

Waterproof Kit Installation

1. Unscrew the sealing nut from the main body.

2. Separate rubber seal from the claw.

3. Verify that you have the following parts as shown below:

 Cable Gland  Seal  Claw  Sealing Nut

4. Insert one end of an Ethernet cable into the sealing nut.

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TEW-740APBO

5. Insert the Ethernet cable into the seal.

7. Insert the seal/rubber claw into the cable gland.

6. Insert the seal into the claw.

8. Connect the Ethernet cable to the LAN port on the bottom of the access point.

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9. Fasten and tighten the plug to the housing of the access point.

10. Fasten and tighten the cap to the weather proof plug.

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Mounting Hardware Installation

Pole Mounting

Note: The pole mounting clamp supports poles with a maximum diameter of 101 mm (3.98 in.)

1. Align the mounting bracket with the hole on the unit and secure it with the M6x8 screw and washer provided.

2. Slide the two provided pole mounting clamps around the pole. Place the mounting bracket at the desired height and position.

3. Secure the TEW-740APBO to the pole mounting bracket using mounting clamp screws.

4. Adjust the orientation of the access point as necessary.

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Wall Mounting

1. Align the mounting bracket with the hole on the unit and secure it with the M6x8 screw and washer provided.

2. Position the provided mounting bracket to the desired location and wall mount with screws or fasteners using the four mounting bracket holes.

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Completed Point to Point Setup and Pole Mount Installation Example

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Installation Tips

There are a number of factors that can impact the range of wireless devices.

1. Adjust your wireless devices so that the signal is traveling in a straight path, rather than at an angle. The more material the signal has to pass through the more signal you will lose.

2. Keep the number of obstructions to a minimum. Each obstruction can reduce the range of a wireless device. Position the wireless devices in a manner that will minimize the amount

of obstructions between them.

3. Building materials can have a large impact on your wireless signal. In an indoor environment, try to position the wireless devices so that the signal passes through less dense material

such as dry wall. Dense materials like metal, solid wood, glass or even furniture may block or degrade the signal.

4. Antenna orientation can also have a large impact on your wireless signal. Use the wireless adapter’s site survey tool to determine the best antenna orientation for your wireless

devices.

5. Interference from devices that produce RF (radio frequency) noise can also impact your signal. Position your wireless devices away from anything that generates RF noise, such as

microwaves, radios and baby monitors.

If you are still experiencing low or no signal consider repositioning the wireless devices or installing additional access points. The use of higher gain antennas may also provide the necessary coverage depending on the environment. Please note to use the wireless connection quality indicators during installation to determine the optimal positioning when mounting your access points.

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Main

WDS

Remote

Application Modes

Although the access point is intended to be used for WDS point-to-point bridging, the access point offers other operating modes. The access point multiple mode system which can be configured either as a wireless gateway or an access point as desired. It also can be used as a WDS (Wireless Distribution System) link for Ethernet network expansion. This section depicts different applications on Router AP Mode, AP Mode, WDS Mode, CPE Mode, Client Bridge + Universal Repeater Mode and CPE + AP Mode.

The different modes can be found under System > Operating Mode in the access point web management page.

AP Mode (Access Point Mode)

An access point can be either a main, relay or remote base station. A main base station is typically connected to a wired network via the Ethernet port. A relay base station relays data between main base stations and relay stations or remote base stations with clients. A remote base station is the end point to accept connections from wireless clients and pass data upstream to a network wirelessly.

Example 1: Access Point Only

 It can be deployed as a traditional fixed wireless access point.

Example 2: Access Point + WDS Bridging

 It can be deployed as a traditional fixed wireless access point and establish WDS bridging to an upstream access point to expand a network.

Main

Remote

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Station

WDS

Main

WDS Mode (Pure WDS)

Example 1: Point-to-Point

Example 2 : Point-to-Multi-Point

Example 3 : Multi-Point Repeating bridge

Main Base

WIFI WAN

LAN

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Client Bridge + Universal Repeater Mode

It can be used as an Client Bridge + Universal Repeater to receive wireless signal over last mile applications, helping WISPs deliver wireless broadband Internet service to new residential and business customers. In this mode, the access point is enabled with DHCP Server functions. The wired clients of access point are in the same subnet from Main Base Station and it accepts wireless connections from client devices.

CPE + AP Mode (Router Client + Access Point)

It can be used as an Outdoor Customer Premised Equipment (CPE) to receive wireless signal over the last mile, helping WISPs deliver wireless broadband Internet service to new residential and business customers. In this mode, the access point is a gateway with NAT and DHCP Server functions. The wireless and wired clients of access point are on the different subnet from Main Base Station and it accepts wireless connections from client devices.

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AP Mode Configuration

When AP mode is chosen, the system can be configured as an Access Point. This section provides detailed explanation for users to configure in the AP mode with help of illustrations. In the AP mode, functions listed in the table below are also available from the Web-based GUI interface.

External Network Connection

Network Requirement

Normally, access point connects to a wired LAN and provides a wireless connection point to associate with wireless client as shown in Figure 3-1. Then, Wireless clients could access to LAN or Internet by associating themselves with the access point set in AP mode.

Configure LAN IP

Here are the instructions to setup the local IP Address and Netmask. Please click on System -> LAN and follow the below setting.

 Mode: Check either “Static IP” or “Dynamic IP” button as desired to set up the

system IP of LAN port.

 Static IP: The administrator can manually setup the LAN IP address when static IP

is available/ preferred.

o IP Address : The IP address of the LAN port; default IP address is

192.168.2.254

o IP Netmask : The Subnet mask of the LAN port; default Netmask is

255.255.255.0

o IP Gateway : The default gateway of the LAN port; default Gateway is

192.168.2.1

 Dynamic IP: This configuration type is applicable when the access point is

connected to a network with the presence of a DHCP server; all related IP information will be provided by the DHCP server automatically.

o Hostname : The Hostname of the LAN port

 DNS: Check either “No Default DNS Server” or “Specify DNS Server IP” button as

desired to set up the system DNS.

o Primary: The IP address of the primary DNS server.

o Secondary: The IP address of the secondary DNS server.

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WDS

Spanning Tree Protocol

WDS

Remote Base Station

LOOP

WDS

Spanning Tree Protocol

WDS

Remote Base Station

LOOP

 802.1d Spanning Tree

The spanning tree network protocol provides a loop free topology for a bridged LAN between LAN interface and 4 WDS interfaces from wds0 to wds3. The Spanning Tree Protocol, which is also referred to as STP, is defined in the IEEE Standard 802.1d. The Spanning tree always enabled on the access point. Below Figures depict a loop for a bridged LAN between LAN and WDS link

Click Save button to save your changes. Click Reboot button to activate your changes.

Blocked by

Remote Base Station

Blocked by

Base Station

Remote Base Station

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Wireless LAN Network

The network manager can configure related wireless settings, General Settings, Advanced Settings, Virtual AP (VAP) Setting, Security Settings and MAC Filter Settings.

Wireless General Setup

The administrator can change the data transmission, channel and output power settings for the system. Please click on Wireless -> General Setup and follow the below setting.

 MAC Address: The MAC address of the Wireless interface is displayed here.

 Band Mode: Select an appropriate wireless band; bands available are 801.11b,

802.11b/g, 802.11b/g/n or 802.11n only.

 Channel: Select the desired channel from the drop-down list to have the access

point operate on. Click Auto Scan to scan for the best available channel to use

based on the environment.

 Tx Power: You can adjust the output power of the system to get the appropriate

coverage for your wireless network. Specify digit numbers between 1 to 100 (the

unit is %) for your environment. If you are not sure which setting to choose, then

keep the default setting, 100%.

 RF (ON/OFF) Schedule: Select an assigned schedule of when to have the access

point turn on. Select Always Run to have the access point always on.

When Band Mode select in 802.11a only mode, the HT(High Throughput) settings should be hidden immediately.

 TxStream/Rx Stream: Select the amount of transmit (TX) and Receive (RX) streams.

By default, it's 2.

 Channel Bandwidth: The "20/40” MHz option is usually best. The other option is

available for special circumstances.

 Extensions Channel: Select which section of channels to use for extension channels.  MCS: This parameter represents transmission rate. By default (Auto) the fastest

possible transmission rate will be selected. You have the option of selecting the speed if necessary. (Refer to Appendix C. MCS Data Rate)

Wireless Advanced Setup

To achieve optimal wireless performance, it is necessary to tweak advance setting per requirements properly, not necessary higher the better or lower. The administrator can change the RTS threshold and fragmentation threshold settings for the system. Please click on Wireless -> Advanced Setup and follow the below setting.

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will start to “Resend” packet before ACK is received, and throughputs become low due to excessively high re-transmission. ACK Timeout is best determined by distance between the radios, data rate of average environment. The Timeout value is calculated based on round-trip time of packet with a little tolerance, So, if experiencing re-transmissions or poor performance the ACK Timeout could be made longer to accommodate.

 Beacon Interval: Beacon Interval is in the range of 20~1024 and set in unit of

millisecond. The default value is 100 msec.

Access Point (AP) in IEEE 802.11 will send out a special approximated 50-byte frame, called “Beacon”. Beacon is broadcast to all the stations, provides the basic information of AP such as SSID, channel, encryption keys, signal strength, time stamp, support data rate.

 Short Slot: By default, it’s “Enable” for reducing the slot time from the standard 20

microseconds to the 9 microsecond short slot time. Slot time is the amount of time

a device waits after a collision before retransmitting a packet. Reducing the slot

time decreases the overall back-off, which increases throughput. Back-off, which is

a multiple of the slot time, is the random length of time a station waits before

sending a packet on the LAN. For a sender and receiver own right of the channel the

shorter slot time help manage shorter wait time to re-transmit from collision

because of hidden wireless clients or other causes. When collision sources can be

removed sooner and other senders attempting to send are listening the channel

(CSMA/CA) the owner of the channel should continue ownership and finish their

transmission and release the channel. Then, following ownership of the channel will

be sooner for the new pair due to shorter slot time. However, when long duration

of existing collision sources and shorter slot time exist the owners might experience

subsequent collisions. When adjustment to longer slot time can’t improve

performance then RTS/CTS could supplement and help improve performance.

 ACK Timeout: ACK timeout is in the range of 1~255 and set in unit of microsecond.

The default value is 32 microsecond. All data transmission in 802.11b/g request an

“Acknowledgement” (ACK) send by receiving radio. The transmitter will resend the

original packet if correspondent ACK failed to arrive within specific time interval,

also refer to as “ACK Timeout”.

ACK Timeout is adjustable due to the fact that distance between two radio links may vary in different deployment. ACK Timeout makes significant influence in performance of long distance radio link. If ACK Timeout is set too short, transmitter

All the radio stations received beacon recognizes the existence of such AP, and may proceed next actions if the information from AP matches the requirement. Beacon is sent on a periodic basis, the time interval can be adjusted.

By increasing the beacon interval, you can reduce the number of beacons and associated overhead, but that will likely delay the association and roaming process because stations scanning for available access points may miss the beacons. You can decrease the beacon interval, which increases the rate of beacons. This will make the association and roaming process very responsive; however, the network will incur additional overhead and throughput will go down.

 DTIM Interval: The DTIM interval is in the range of 1~255. The default is 1.

DTIM is defined as Delivery Traffic Indication Message. It is used to notify the wireless stations, which support power saving mode, when to wake up to receive multicast frame. DTIM is necessary and critical in wireless environment as a mechanism to fulfill power-saving synchronization. A DTIM interval is a count of the number of beacon frames that must occur before the access point sends the buffered multicast frames. For instance, if DTIM Interval is set to 3, then the Wi-Fi clients will expect to receive a multicast frame after receiving three Beacon frame. The higher DTIM interval will help power saving and possibly decrease wireless throughput in multicast applications.

 RTS Threshold: TRTS Threshold is in the range of 1~2347 byte. The default is 2347

byte. The main purpose of enabling RTS by changing RTS threshold is to reduce

possible collisions due to hidden wireless clients. RTS in AP will be enabled

automatically if the packet size is larger than the Threshold value. By default, RTS is

disabled in a normal environment supports non-jumbo frames.

 Short Preamble: By default, it’s “Enable”. To Disable is to use Long 128-bit

TRENDnet User’s Guide

TEW-740APBO

Queue

Data

Transmitted

AP to Clients

Priority

Description

AC_BK

Background.

Low

High throughput. Bulk data that requires maximum throughput and is not time-sensitive is sent to this queue (FTP data, for example).

AC_BE

Best Effort

Medium

Medium throughput and delay. Most traditional IP data is sent to this queue

AC_VI

Video

High

Minimum delay. Time-sensitive video data is automatically sent to this queue

AC_VO

Voice

High

Time-sensitive data like VoIP and streaming media are automatically sent to this queue

Preamble Synchronization field. The preamble is used to signal "here is a train of data coming" to the receiver. The short preamble provides 72-bit Synchronization field to improve WLAN transmission efficiency with less overhead.

 WMM: By default, it's “Enabled”.

Wireless WMM QoS Setup

 WMM Parameters of Access Point : This affects traffic flowing from the access

point to the client station

Configuring QoS options consists of setting parameters on existing queues for different types of wireless traffic. You can configure different minimum and maximum wait times for the transmission of packets in each queue based on the requirements of the media being sent. Queues automatically provide minimum transmission delay for Voice, Video, multimedia, and mission critical applications, and rely on best-effort parameters for traditional IP data. As an Example, time-sensitive Voice & Video, and multimedia are given effectively higher priority for transmission (lower wait times for channel access), while other applications and traditional IP data which are less time-sensitive but often more dataintensive are expected to tolerate longer wait times.

o Aifsn: The Arbitration Inter-Frame Spacing Number specifies a wait time (in

milliseconds) for data frames

o CWmin: Minimum Contention Window. This parameter is input to the algorithm

that determines the initial random back-off wait time ("window") for retry of a transmission. The value specified here in the Minimum Contention Window is the upper limit (in milliseconds) of a range from which the initial random back-off wait time is determined.

o CWmax: Maximum Contention Window. The value specified here in the

Maximum Contention Window is the upper limit (in milliseconds) for the doubling of the random back-off value. This doubling continues until either the data frame is sent or the Maximum Contention Window size is reached. Once the Maximum Contention Window size is reached, retries will continue until a maximum number of retries allowed is reached. 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".

o Txop: Transmission Opportunity is an interval of time when a WME AP has the

right to initiate transmissions onto the wireless medium (WM). This value specifies (in milliseconds) the Transmission Opportunity (TXOP) for AP; that is, the interval of time when the WMM AP has the right to initiate transmissions on the wireless network.

TRENDnet User’s Guide

TEW-740APBO

Queue

Data

Transmitted Clients to AP

Priority

Description

AC_BK

Background.

Low

High throughput. Bulk data that

requires maximum throughput and is not timesensitive is sent to this queue (FTP data, for example).

AC_BE

Best Effort

Medium

Medium throughput and delay.

Most traditional IP data is sent to this queue

AC_VI

Video

High

Minimum delay. Time-sensitive

video data is automatically sent to this queue

AC_VO

Voice

High

Time-sensitive data like VoIP

and streaming media are automatically sent to this queue

o ACM: Admission Control Mandatory, ACM only takes effect on AC_VI and AC_VO.

When you do not click Checkbox, it means that the ACM is controlled by the connecting AP. If you click Checkbox, it means that the Client is in charge.

o AckPolicy: Acknowledgment Policy, WMM defines two ACK policies: Normal ACK

and No ACK. Click “Checkbox” indicates “No ACK”

When the no acknowledgment (No ACK) policy is used, the recipient does not

acknowledge received packets during wireless packet exchange. This policy is suitable in the environment where communication quality is fine and interference is weak. While the No ACK policy helps improve transmission efficiency, it can cause increased packet loss when communication quality deteriorates. This is because when this policy is used, a sender does not retransmit packets that have not been received by the recipient. When the Normal ACK policy is used, the recipient acknowledges each received unicast packet.

 WMM Parameters of Station: This affects traffic flowing from the client station to

the access point.

o Aifsn: The Arbitration Inter-Frame Spacing Number specifies a wait time (in

milliseconds) for data frames

o CWmin: Minimum Contention Window. This parameter is input to the algorithm

that determines the initial random backoff wait time ("window") for retry of a transmission. The value specified here in the Minimum Contention Window is the upper limit (in milliseconds) of a range from which the initial random backoff wait time is determined.

o CWmax: Maximum Contention Window. The value specified here in the

Maximum Contention Window is the upper limit (in milliseconds) for the doubling of the random backoff value. This doubling continues until either the data frame is sent or the Maximum Contention Window size is reached. Once the Maximum Contention Window size is reached, retries will continue until a maximum number of retries allowed is reached. 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".

o Txop: Transmission Opportunity is an interval of time when a WME AP has the

right to initiate transmissions onto the wireless medium (WM). This value specifies (in milliseconds) the Transmission Opportunity (Txop) for AP; that is, the interval of time when the WMM AP has the right to initiate transmissions on the wireless network.

o ACM: Admission Control Mandatory, ACM only takes effect on AC_VI and AC_VO.

When you do not click Checkbox, it means that the ACM is controlled by the

connecting AP. If you click Checkbox, it means that the Client is in charge. Click Save button to save your changes. Click Reboot button to activate your changes. The items in this page are for AP's RF advanced settings and will be applied to all VAPs and WDS Links.

TRENDnet User’s Guide

TEW-740APBO

Sales Network

Engineer Network

Market Network

Guest Network

Accounting Network

Create Virtual AP (VAP)

Virtual AP Overview

The access point supports broadcasting multiple SSIDs, allowing the creation of Virtual Access Points, partitioning a single physical access point into 7 logical access points, each of which can have a different set of security, VLAN Tag(ID) and network settings.

Figure 3-2 shows multiple SSIDs with different security type and VLAN settings.

Multiple SSIDs with different Security Type and VLAN Tag

VLAN #1

WEP

VLAN #2

WPA-PSK/TKIP

SSID 1

SSID 2

VLAN #3

WPA-PSK/AES

WPA2-PSK/TKIP

SSID 3

VLAN #4

WPA2-PSK/AES

SSID 4

VLAN #5

SSID 5

The administrator can view all of the Virtual AP's settings via this page. Please click on Wireless -> Virtual AP Setup and the Virtual AP Overview Page appears.

 VAP: Indicate the system's Virtual AP.  MAC Address: The MAC address of the VAP Interface is displayed here. When you

enable AP and reboot system, the MAC address will display here.

 ESSID: Indicate the ESSID of the respective Virtual AP  Status: Indicate the Status of the respective Virtual AP. The Primary AP always on.  Security Type: Indicate a used security type of the respective Virtual AP.  MAC Filter: Indicate a used MAC filter of the respective Virtual AP.  Edit: Click Edit button to configure Virtual AP's settings, including security type and

MAC Filter.

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