DI774VB1 Tri-Mode Dualband Wireless Router Users Manual 1

 

D-Link Air Xpert DI-774 2.4 GHz / 5 GHz Tri-Mode Dualband Wireless Router Manual Building Networks for People Contents Package Contents ................................................................................3 Introduction............................................................................................4 Connections ..........................................................................................5 Features ...............................................................................................6 LEDs ....................................................................................................7 Wireless Basics ....................................................................................8 Getting Started ....................................................................................10 Using the Configuration Menu.............................................................. 11 Networking Basics ..............................................................................40 Troubleshooting...................................................................................55 Technical Specifications ......................................................................61 Frequently Asked Questions ................................................................64 Contacting Technical Support ..............................................................92 Warranty and Registration ...................................................................93 2 Package Contents Contents of Package:

D-Link Air Xpert DI-774 2.4GHz/5GHz Tri-Mode Dualband Wireless Router Power Adapter 5V DC, 3.0A Manual on CD Quick Installation Guide Ethernet Cable Note: Using a power supply with a different voltage rating than the one included with the DI-774 will cause damage and void the warranty for this product. If any of the above items are missing, please contact your reseller. System Requirements For Configuration:

Computer with Windows, Macintosh, or Linux-based operating system with an installed Ethernet adapter

3 Introduction At up to five times the speed of previous wireless devices, you can work faster and more efficiently, increasing productivity. With the DI-774, bandwidth-intensive applications like graphics or multimedia will benefit significantly because large files are able to move across the network quickly. This versatile wireless router also features four times the number of non-overlapping channels than a device that supports only 802.11g, so more users can access the network. Support for all three standards (802.11g; 802.11a; 802.11b) means that you can grow your network without having to worry about legacy wireless equipment being incompatible with newer compliant devices from other manufacturers. This also allows network administrators to partition the usage of the dualband by segmenting users and creating special access privilege networks for classified document transfer and communications. With the DI-774 you can securely connect to wireless clients on the network using 802.1x for wireless user authentication, as well as WPA (Wi-Fi Protected Access ) TM providing you a much higher level of security for your data and communications than has previously been available. Through its easy-to-use Web-based user interface, the DI-774 lets you control the information that is accessible to those on the wireless network, whether from the Internet or from your companys server:

Content Filtering Easily applied content filtering based on MAC Address, IP Address, URL and /or Domain Name. Filter Scheduling Filters can be scheduled to be active on certain days or for a duration of hours or minutes. Network Address Translation NAT protects the DI-774 and its users from outside intruders gaining access to your private network VPN Multiple/Concurrent Sessions Supports multiple and concurrent IPSec and PPTP sessions, so multiple users behind the DI-774 can access corporate networks through various VPN clients more securely. 4 Connections - Back Panel of Unit All Ethernet Ports (WAN and LAN) are auto MDI/MDIX, meaning you can use either a straight-through or a crossover Ethernet cable. Pressing the Reset Button restores the router to its original factory default settings. Auto MDI/MDIX LAN ports automatically sense the cable type when connecting to Ethernet-enabled computers. The Auto MDI/MDIX WAN port is the connection for the Ethernet cable to the Cable or DSL modem Receptor for the Power Adapter 5 Features

Fully compatible with the 802.11g standard to provide a wireless data rate of up to 54Mbps

! Backwards compatible with the 802.11b standard to provide a wireless data rate of up to 11Mbps WPA (Wi Fi Protected Access ) authorizes and identifies users based on a secret key that changes automatically at a regular interval, for example:

TM

!TKIP (Temporal Key Integrity Protocol), in conjunction with a RADIUS server, changes the temporal key every 10,000 packets, ensuring greater security Pre-Shared Key mode means that the home user, without a RADIUS server, will obtain a new security key every time the he or she connects to the network, vastly improving the safety of communications on the network.

802.1x Authentication in conjunction with the RADIUS server verifies the identity of would be clients

! Utilizes OFDM technology (Orthogonal Frequency Division Multiplexing) to ensure strong wireless signals for both 802.11g and 802.11a

! User-friendly configuration and diagnostic utilities

! Connects multiple computers to a Broadband (Cable or DSL) modem to Operates in the 2.4GHz frequency range share the Internet connection

! Advanced Firewall features

! Supports NAT with VPN pass-through, providing added security

! MAC Filtering

!IP Filtering

! URL Filtering

! Domain Blocking

! Scheduling

! DHCP server supported enables all networked computers to automatically receive IP addresses

! Web-based interface for Managing and Configuring Access Control to manage users on the network

! Supports special applications that require multiple connections

! Equipped with 4 10/100 Ethernet ports, 1 WAN port, Auto MDI/MDIX 6 LEDs - Front Panel of Unit LED stands for Light-Emitting Diode. The DI-774 has the following LEDs:

Power A solid light indicates a proper connection to the power supply Status A blinking light indicates that the DI-774 is ready WAN LED A solid light indicates connec-

tion on the WAN port. This LED blinks during data transmission WLAN LEDs for 11a and 11g wireless net-

work segments. A solid light indi-

cates that the wireless segment is ready. The LEDs blink during wireless data transmission Local Network LEDs A solid light indicates a connection to an Ethernet-enabled computer on ports 1-

4. The LEDs blink during data transmis-

sion 7 Wireless Basics D-Link wireless products are based on industry standards to provide easy-to-use and compatible high-speed wireless connectivity within your home, business or public access wireless networks. D-Link wireless products will allow you access to the data you want, when and where you want it. You will be able to enjoy the freedom that wireless networking brings. A WLAN is a cellular computer network that transmits and receives data with radio signals instead of wires. WLANs are used increasingly in both home and office environments, and public areas such as airports, coffee shops and universities. Innovative ways to utilize WLAN technology are helping people to work and communicate more efficiently. Increased mobility and the absence of cabling and other fixed infrastructure have proven to be beneficial for many users. Wireless users can use the same applications they use on a wired network. Wireless adapter cards used on laptop and desktop systems support the same protocols as Ethernet adapter cards. People use wireless LAN technology for many different purposes:

Mobility - Productivity increases when people have access to data in any location within the operating range of the WLAN. Management decisions based on real-time information can significantly improve worker efficiency. Low Implementation Costs WLANs are easy to set up, manage, change and relocate. Networks that frequently change can benefit from WLANs ease of implementation. WLANs can operate in locations where installation of wiring may be impractical. Installation and Network Expansion - Installing a WLAN system can be fast and easy and can eliminate the need to pull cable through walls and ceilings. Wireless technology allows the network to go where wires cannot go - even outside the home or office. Scalability WLANs can be configured in a variety of topologies to meet the needs of specific applications and installations. Configurations are easily changed and range from peer-to-peer networks suitable for a small number of users to larger infrastructure networks to accommodate hundreds or thousands of users, depending on the number of wireless devices deployed. Inexpensive Solution - Wireless network devices are as competitively priced as conventional Ethernet network devices. 8 Wireless Basics (continued) Standards-Based Technology The DI-774 Wireless Broadband Router utilizes the new 802.11g standard, in addition to the 802.11a and 802.11b standards. The IEEE 802.11g standard is an extension of the 802.11b standard. It increases the data rate up to 54 Mbps within the 2.4GHz band, utilizing OFDM technology. This means that in most environments, within the specified range of this device, you will be able to transfer large files quickly or even watch a movie in MPEG format over your network without noticeable delays. This technology works by transmitting high-speed digital data over a radio wave utilizing OFDM (Orthogonal Frequency Division Multiplexing) technology. OFDM works by splitting the radio signal into multiple smaller sub-signals that are then transmitted simultaneously at different frequencies to the receiver. OFDM reduces the amount of crosstalk (interference) in signal transmissions. Installation Considerations The D-Link Air Xpert DI-774 lets you access your network, using a wireless connection, from virtually anywhere within its operating range. Keep in mind, however, that the number, thickness and location of walls, ceilings, or other objects that the wireless signals must pass through, may limit the range. Typical ranges vary depending on the types of materials and background RF (radio frequency) noise in your home or business. The key to maximizing wireless range is to follow these basic guidelines:

11111 22222 33333 44444 Keep the number of walls and ceilings between the DI-624 and other network devices to a minimum - each wall or ceiling can reduce your D-Link wireless products range from 3-90 feet (1-30 meters.) Position your devices so that the number of walls or ceilings is minimized. Be aware of the direct line between network devices. A wall that is 1.5 feet thick (.5 meters), at a 45-degree angle appears to be almost 3 feet (1 meter) thick. At a 2-degree angle it looks over 42 feet (14 meters) thick! Position devices so that the signal will travel straight through a wall or ceiling (instead of at an angle) for better reception. Building Materials can impede the wireless signal - a solid metal door or aluminum studs may have a negative effect on range. Try to position wireless devices and computers with wireless adapters so that the signal passes through drywall or open doorways and not other materials. Keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices or appliances that generate extreme RF noise. 9 Getting Started Setting up a Wireless Infrastructure Network 6 2 1 3 4 5 For a typical wireless setup at home (as shown above), please do the following:

You will need broadband Internet access (a Cable or DSL-subscriber line into your home or office) Consult with your Cable or DSL provider for proper installation of the modem Connect the Cable or DSL modem to the DI-774 Wireless Router (see the printed Quick Installation Guide included with your router.) If you are connecting a desktop computer to your network, install the D-Link Air Xpert DWL-AG520 wireless PCI adapter into an available PCI slot on your desktop computer.

(See the printed Quick Installation Guide included with the network adapter.) Install the D-Link DWL-AG650 wireless Cardbus adapter into a laptop computer.

(See the printed Quick Installation Guide included with the DWL-AG650.) Install the D-Link DFE-530TX+ wireless Cardbus adapter into a desktop com-

puter. The four Ethernet LAN ports of the DI-774 are Auto MDI/MDIX and will work with both Straight-through and Crossover cable.

(See the printed Quick Installation Guide included with the DFE-530TX+.) 10 Using the Configuration Menu Whenever you want to configure your network or the DI-774, you can access the Configuration Menu by opening the web-browser and typing in the IP Address of the DI-774. The DI-774 default IP Address is shown here:

Open the web browser Type in the IP Address of the Router (http://192.168.0.1) Note: if you have changed the default IP Address assigned to the DI-774, make sure to enter the correct IP Address. http://192.168.0.1 Type admin in the User Name field Leave the Password

blank Click OK Home > Wizard The Home>Wizard screen will appear. Please refer to the Quick Installation Guide for more information regarding the Setup Wizard. These buttons appear on most of the configu-

ration screens in this section. Please click on the appropriate button at the bottom of each screen after you have made a configuration change. 11 Using the Configuration Menu (continued) Home > Wireless > 802.11a Wireless Settings- Choose 802.11a or 802.11g. Here, 802.11a is selected. SSID-

default is the default setting. All devices on the network must share the same SSID. If you change the default setting, the SSID may be up to 32 characters long. 52 is the default channel for 802.11a. All devices on the network must share the same channel. Channel-

WEP-

WEP Encryption- Select the level of encryption desired: 64, 128 or 152-bit Select Enabled or Disabled. Disabled is the default setting. WEP (Wired Equivalent Privacy) If you enable encryption on the DI-774 make sure to also enable encryption on all 802.11a wireless clients or wireless connection will not be established. Key Type-

Select HEX or ASCII Hexadecimal digits consist of the numbers 0-9 and the letters A-F ASCII (American Standard Code for Information Interchange) is a code for repre-

senting English letters as numbers from 0-127 Keys 1-4-

Input up to 4 WEP keys; select the one you wish to use. 12 Using the Configuration Menu (continued) Home > Wireless > 802.11g Wireless Settings- Choose 802.11a or 802.11g. Here, 802.11g is selected. SSID-

Channel-

WEP-

default is the default setting. All devices on the network must share the same SSID. The SSID may be up to 32 characters long. 1 is the default channel for 802.11g. All devices on the network must share the same channel. Select Enabled or Disabled. Disabled is the default setting. WEP Encryption- Select the level of encryption desired: 64, 128 or 152-bit WEP (Wired Equivalent Privacy) If you enable encryption on the DI-774 make sure to also enable encryption on all 802.11g wireless clients or wireless connection will not be established. Key Type-

Select HEX or ASCII Keys 1-4-

Input up to 4 WEP keys; select the one you wish to use. 13 Using the Configuration Menu (continued) Home > WAN > Dynamic IP Address Dynamic IP Address-

Host Name-

MAC Address-

Clone MAC Address-

Most Cable modem users will select this option to obtain an IP Address automatically from their ISP (Internet Service Pro-

vider). This is optional, but may be required by some ISPs. The host name is the device name of the Router. The default MAC Address is set to the WANs physical inter-

face MAC address on the Router. Copy the MAC address of the Ethernet card installed by your ISP, and replace the WAN MAC address with this Ethernet card MAC address. It is not recommended that you change the default MAC address unless required by your ISP. Primary/Secondary DNS-

Enter a DNS Address if you do not wish to use the one provided by your ISP. (DNS is short for Domain Name System. It trans-

lates domain names into IP Addresses). MTU-

Enter an MTU value only if required by your ISP. Otherwise, leave this section to its default setting of 1500. (MTU is short for Maximum Transfer Unit. Messages longer than the MTU 14 will be divided into smaller units for transmission). Using the Configuration Menu (continued) Home > WAN > Static IP Address Static IP Address-

Select this option to set static IP information provided to you by your ISP. IP Address-

Subnet Mask-

ISP Gateway Address-

Primary/

Secondary DNS-

MTU-

Input the IP Address provided by your ISP Input your Subnet mask. (All devices in the network must have the same subnet mask.) Input the Gateway address Enter a DNS Address if you do not wish to use the one pro-

vided by your ISP. (DNS is short for Domain Name System. It translates domain names into IP Addresses). Enter an MTU value only if required by your ISP. Otherwise, leave this section to its default setting of 1500. (MTU is short for Maximum Transfer Unit. Messages longer than the MTU will be divided into smaller units for transmission). 15 Using the Configuration Menu (continued) Home > WAN > PPPoE Please be sure to remove any existing PPPoE client software installed on your computers. PPPoE-

Choose this option if your ISP uses PPPoE. (Most DSL users will select this option). Dynamic PPPoE- receive an IP Address automaticsally from your ISP. Static PPPoE- you have an assigned (static) IP Address. Your PPPoE username provided by your ISP. Your PPPoE password provided by your ISP. User Name-

Password-

Retype Password- Re-enter the PPPoE password Service Name-

IP Address-

Enter the Service Name provided by your ISP (optional). This option is only available for Static PPPoE. Enter the static IP Address for the PPPoE connection. 16 Using the Configuration Menu (continued) Home > WAN > PPPoE continued Primary/Secondary DNS-

Enter a DNS Address if you do not wish to use the one provided by your ISP. (DNS is short for Domain Name System. It trans-

lates domain names into IP Addresses). Maximum Idle Time-

MTU-

Enter a maximum idle time during which Internet connection is maintained during inactivity. To disable this feature, enter zero or enable Auto-reconnect. Maximum Transmission Unit-1472 is default-you may need to change the MTU to conform with your ISP. Auto-reconnect-

If enabled, the DI-774 will automatically connect to your ISP af-

ter your system is restarted or if the connection is dropped. Home > LAN LAN is short for Lo-

cal Area Network. This is considered your internal network. These are the IP set-

tings of the LAN inter-

face for the DI-774. These settings may be referred to as Pri-

vate settings. You may change the LAN IP Address if needed. The LAN IP Address is private to your in-

ternal network and cannot be seen on the Internet. IP Address-

Subnet Mask-

Local Domain Name-

The IP Address of the LAN interface. The default IP Asddress is:

192.168.0.1 The subnet mask of the LAN interface. The default subnet mask is 255.255.255.0 The domain name assigned to the router 17 Using the Configuration Menu (continued) Home > DHCP DHCP stands for Dynamic Host Control Protocol. The DI-774 has a built-in DHCP server. The DHCP Server will automatically assign an IP Address to the computers on the LAN/private network. Be sure to set your computers to be DHCP clients by setting their TCP/IP settings to Obtain an IP Address Automatically. When you turn your computers on, they will automatically load the proper TCP/

IP settings provided by the DI-774. The DHCP Server will automatically allocate an unused IP Address from the IP Address pool to the requesting computer. You must specify the starting and ending address of the IP Address pool. DHCP Server-

Starting IP Address-

Ending IP Address-

Lease Time-

The length of time of the DHCP lease Select Enabled or Disabled The starting IP Address for the DHCP servers IP assignment The ending IP Address for the DHCP servers IP assignment Static DHCP-

Static & Dynamic DHCP Client Table-

Enable the Static DHCP server to assign the same IP Address to a MAC Address that you specify here. This prevents the prob-

lems sometimes encountered with changing IP Addresses Displays a list of Static and Dynamic DHCP clients assigned by the router 18 Using the Configuration Menu (continued) Advanced > Virtual Server The DI-774 can be configured as a virtual server so that remote users accessing Web or FTP services via the public IP Address can be automatically redirected to local servers in the LAN (Local Area Network). The DI-774 firewall feature filters out unrecognized packets to protect your LAN network so all computers networked with the DI-774 are invisible to the outside world. If you wish, you can make some of the LAN computers accessible from the Internet by enabling Virtual Server. Depending on the requested service, the DI-774 redirects the external service request to the appropriate server within the LAN network. 19 Using the Configuration Menu (continued) Advanced > Virtual Server continued The DI-774 is also capable of port-redirection meaning incoming traffic to a particular port may be redirected to a different port on the server computer. Each virtual service that is created will be listed at the bottom of the screen in the Virtual Servers List. There are pre-defined virtual services already in the table. You may use them by enabling them and assigning the server IP to use that particular virtual service. Virtual Server-

Select Enabled or Disabled Name-

Private IP-

Enter the name referencing the virtual service The server computer in the LAN (Local Area Network) that will be providing the virtual services. Protocol Type-

The protocol used for the virtual service Private Port-

The port number of the service used by the Private IP computer Public Port-

Schedule-

The port number on the WAN (Wide Area Network)side that will be used to access the virtual service. The schedule of time when the virtual service will be enabled. The schedule may be set to Always, which will allow the particular service to always be enabled. If it is set to Time, select the time frame for the service to be enabled. If the system time is outside of the scheduled time, the service will be disabled. Example #1:

If you have a Web server that you wanted Internet users to access at all times, you would need to enable it. Web (HTTP) server is on LAN (Local Area Network) computer 192.168.0.25. HTTP uses port 80, TCP. Name: Web Server Private IP: 192.168.0.25 Protocol Type: TCP Private Port: 80 Public Port: 80 Schedule: always 20 Using the Configuration Menu (continued) Advanced > Virtual Server continued Click on this icon to edit the virtual service Click on this icon to delete the virtual service Example #2:

If you have an FTP server that you wanted Internet users to access by WAN port 2100 and only during the weekends, you would need to enable it as such. FTP server is on LAN computer 192.168.0.30. FTP uses port 21, TCP. Name: FTP Server Private IP: 192.168.0.30 Protocol Type: TCP Private Port: 21 Public Port: 2100 Schedule: From: 01:00AM to 11:00PM, Sat to Sun All Internet users who want to access this FTP Server must connect to it from port 2100. This is an example of port redirection and can be useful in cases where there are many of the same servers on the LAN network. 21 Using the Configuration Menu (continued) Advanced > Applications Some applications require multiple connections, such as Internet gaming, video conferencing, Internet telephony and others. These applications have difficulties working through NAT (Network Address Translation). Special Applications makes some of these applications work with the DI-774. If you need to run applications that require multiple connections, specify the port normally associated with an application in the Trigger Port field, select the protocol type as TCP or UDP, then enter the public ports associated with the trigger port to open them for inbound traffic. The DI-774 provides some predefined applications in the table on the bottom of the web page. Select the application you want to use and enable it. Note! Only one PC can use each Special Application tunnel. Name:

Trigger Port:

This is the name referencing the special application. This is the port used to trigger the application. It can be either a single port or a range of ports. This is the protocol used to trigger the special application. Trigger Type:

Public Port:

Public Type:

This is the port number on the WAN side that will be used to access the application. You may define a single port or a range of ports. You can use a comma to add multiple ports or port ranges. This is the protocol used for the special application. 22 Using the Configuration Menu (continued) Advanced > Filters > IP Filters Filters are used to deny or allow LAN (Local Area Network) computers from accessing the Internet. The DI-774 can be setup to deny internal computers by their IP or MAC addresses. The DI-774 can also block users from accessing restricted web sites. IP Filters-

IP-

Port-

Protocol Types-

Schedule-

Use IP Filters to deny LAN IP Addresses from accessing the Internet. You can deny specific port numbers or all ports for the specific IP Address. The IP Address of the LAN computer that will be denied access to the Internet. The single port or port range that will be denied access to the Internet. Select the protocol type This is the schedule of time when the IP Filter will be enabled. 23 Using the Configuration Menu Advanced > Filters > URL Blocking URL Blocking is used to deny LAN computers from accessing specific web sites. A URL is a specially formatted text string that defines a location on the Internet. If any part of the URL contains the blocked word, the site will not be accessible and the web page will not display. Filters-

URL Blocking-

Keywords-

Select the filter you wish to use; in this case, URL Blocking was chosen. Select Enabled or Disabled. Block URLs which contain the keywords listed below. Enter the keywords in this space. 24 Using the Configuration Menu Advanced > Filters > MAC Filters Use MAC (Media Access Control) Filters to allow or deny LAN (Local Area Network) computers by their MAC addresses from accessing the Internet. You can either manually add a MAC address or select the MAC address from the list of clients that are currently connected to the Broadband Router. Filters-

MAC Filters-

Name-

MAC Address-

DHCP Client-

Select the filter you wish to use; in this case, MAC filters was chosen. Choose to Disable MAC filters, or choose to allow or deny MAC addresses listed below. Enter the name here. Enter the MAC Address of the client that will be allowed or de-

nied access. Select a DHCP client from the pull-down list; click Clone to copy that MAC Address. 25 Using the Configuration Menu (continued) Advanced > Filters > Domain Blocking Domain Blocking is used to allow or deny LAN (Local Area Network) computers from accessing specific domains on the Internet. Domain blocking will deny all requests to a specific domain such as http and ftp. It can also allow computers to access specific sites and deny all other sites. Filters-

Domain Blocking Select the filter you wish to use; in this case, Domain Blocking was chosen. Disabled-

Allow-

Deny-

Select Disabled to disable Domain Blocking Allows users to access all domains except Blocked Domains Denies users access to all domains except Permitted Domains Permitted Domains-

Blocked Domains-

Enter the Permitted Domains in this field Enter the Blocked Domains in this field 26 Using the Configuration Menu (continued) Advanced > Firewall Firewall Rules is an advanced feature used to deny or allow traffic from passing through the DI-774. It works in the same way as IP Filters with additional settings. You can create more detailed access rules for the DI-774. When virtual services are created and enabled, it will also display in Firewall Rules. Firewall Rules contains all network firewall rules pertaining to IP (Internet Protocol). In the Firewall Rules List at the bottom of the screen, the priorities of the rules are from top (highest priority) to bottom (lowest priority.) Note: The DI-774 MAC Address filtering rules have precedence over the Firewall Rules. Firewall Rules-

Name-

Action-

Enable or disable the Firewall Rules Enter a name for the rule Allow or deny IP traffic through the router Source-

Destination-

Schedule-

Enter the IP Address range Enter the IP Address range; the Protocol;

and the Port Range Select Always or enter the Time. 27 Using the Configuration Menu (continued) Advanced > DMZ If you have a client PC that cannot run Internet applications properly from behind the DI-774, then you can set the client up to unrestricted Internet access. It allows a computer to be exposed to the Internet. This feature is useful for gaming purposes. Enter the IP Address of the internal computer that will be the DMZ host. Adding a client to the DMZ (Demilitarized Zone) may expose your local network to a variety of security risks, so only use this option as a last resort. DMZ-

Enable or disable the DMZ. The DMZ (Demilitarized Zone) allows a single computer to be exposed to the Internet. IP Address-

Enter the IP Address of the computer to be in the DMZ 28 Using the Configuration Menu (continued) Advanced > Performance > 802.11a Wireless Performance-

Select 802.11a or 802.11g. Here, 802.11a has been chosen. This screen displays the wireless performance features of the Access Point portion of the DI-774. Data Rate-

Auto is the default se-

lection. Select from the drop down menu for your selection. Transmit Power-

Beacon interval-

RTS Threshold-

Fragmentation-

DTIM interval-

Authentication-

Shared Key -

SSID Broadcast-

Full is the default selection. Select from the drop down menu for your selection. Beacons are packets sent by the DI-774 to synchronize a wire-

less network. Specify a value. 100 is the default setting and is recommended. This value should remain at its default setting of 2346. If incon-

sistent data flow is a problem, only a minor modification should be made. This value should also remain at its default setting of 2346. If you experience a high packet error rate, you may slightly increase your Fragmentation value within the range of 256-2346. Setting the Fragmentation value too low may result in poor performance.

(Delivery Traffic Indication Message) 1 is the default setting. A DTIM is a countdown informing clients of the next window for listening to broadcast and multicast messages. Select Open system or Shared Key the default setting In this mode, in order to access the DI-774 on the network, the device must be listed in the MAC Address Control List Choose Enabled to broadcast the SSID across the network. All devices on a network must share the same SSID (Service Set Identifier) to establish communication. Choose Disabled if you do not wish to broadcast the SSID over the network. 29 Open System - The DI-774 will be visible to all devices on the network. This is Using the Configuration Menu (continued) Advanced > Performance > 802.11g Wireless Performance-

Select 802.11a or 802.11g. 802.11g is selected here. Dis-

played in this window are the Wireless Per-

formance features for the Access Point por-

tion of the DI-774. TX Rates-

Auto is the default selection. Select from the drop down menu for your selection. Transmit Power-

Beacon interval-

RTS Threshold-

Fragmentation-

DTIM interval-

Authentication-

Shared Key -

SSID Broadcast-

Full is the default selection. Select from the drop down menu for your selection. Beacons are packets sent by the DI-774 to synchronize a wire-

less network. Specify a value. 100 is the default setting and is recommended. This value should remain at its default setting of 2346. If incon-

sistent data flow is a problem, only a minor modification should be made. This value should also remain at its default setting of 2346. If you experience a high packet error rate, you may slightly increase your Fragmentation value within the range of 256-2346. Setting the Fragmentation value too low may result in poor performance.

(Delivery Traffic Indication Message) 1 is the default setting. A DTIM is a countdown informing clients of the next window for listening to broadcast and multicast messages. Select Open system or Shared Key the default setting In this mode, in order to access the DI-774 on the network, the device must be listed in the MAC Address Control List Choose Enabled to broadcast the SSID across the network. All devices on a network must share the same SSID (Service Set Identifier) to establish communication. Choose Disabled if you do not wish to broadcast the SSID over the network. 30 Open System - The DI-774 will be visible to all devices on the network. This is