Cisco Systems WRV54G manual Advanced Wireless Settings See Figure

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Wireless-G VPN Broadband Router

Advanced Wireless Settings (See Figure 6-15.)

On this screen you can access the Advanced Wireless features, including Authentication Type, Basic Data Rates, Control Tx Rates, Beacon Interval, DTIM Interval, RTS Threshold, and Fragmentation Threshold.

•Authentication Type. The default is set to Auto, which allows either Open System or Shared Key authentication to be used. For Open System authentication, the sender and the recipient do NOT use a WEP key for authentication. For Shared Key authentication, the sender and recipient use a WEP key for authentication. If you want to use only Shared Key authentication, then select Shared Key.

•Basic Data Rates. Select 1-2 Mbps, All, or Default, from the drop-down menu.

•Control Tx Rates. The default transmission rate is Auto. The range is from 1 to 54Mbps. The rate of data transmission should be set depending on the speed of your wireless network. You can select from a range of transmission speeds, or keep the default setting, Auto, to have the Router automatically use the fastest possible data rate and enable the Auto-Fallback feature. Auto-Fallback will negotiate the best possible connection speed between the Router and a wireless client.

•Beacon Interval. The default value is 100. Enter a value between 1 and 65,535 milliseconds. The Beacon Interval value indicates the frequency interval of the beacon. A beacon is a packet broadcast by the Router to synchronize the wireless network.

•DTIM Interval The default value is 3. This value, between 1 and 255 milliseconds, indicates the interval of the Delivery Traffic Indication Message (DTIM). A DTIM field is a countdown field informing clients of the next window for listening to broadcast and multicast messages. When the Router has buffered broadcast or multicast messages for associated clients, it sends the next DTIM with a DTIM Interval value. Its clients hear the beacons and awaken to receive the broadcast and multicast messages.

•RTS Threshold This value should remain at its default setting of 2347. The range is 0-2347 bytes. Should you encounter inconsistent data flow, only minor modifications are recommended. If a network packet is smaller than the preset RTS threshold size, the RTS/CTS mechanism will not be enabled. The Router sends Request to Send (RTS) frames to a particular receiving station and negotiates the sending of a data frame. After receiving an RTS, the wireless station responds with a Clear to Send (CTS) frame to acknowledge the right to begin transmission.

•Fragmentation Threshold This value should remain at its default setting of 2346. The range is 256-2346 bytes. It specifies the maximum size for a packet before data is fragmented into multiple packets. If you experience a high packet error rate, you may slightly increase the Fragmentation Threshold. Setting the Fragmentation Threshold too low may result in poor network performance. Only minor modifications of this value are recommended.

Chapter 6: Configuring the Router

Figure 6-15: Advanced Wireless Settings

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The Wireless Tab

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Contents 802 GHz .11g Wireless- G How to Use this Guide Copyright and TrademarksWord definition Table of Contents Frequently Asked Questions Wireless SecurityWelcome IntroductionWhat’s in this Guide? Wireless-G Broadband VPN Router Router’s Functions Planning your Wireless NetworkIP Addresses What’s an IP Address?Why do I need a VPN? Dhcp Dynamic Host Configuration Protocol ServersDynamic IP Addresses What is a VPN? VPN Router to VPN Router Wireless-G VPN Broadband Router Back Panel Getting to Know the Wireless-G VPN Broadband RouterDMZ Front PanelOverview Connecting the Wireless-G Broadband RouterWireless Connection to a PC Wired Connection to a PCWireless-G VPN Broadband Router Configuring Windows 98 and Millennium PCs Configuring the PCsProperties Configuring Windows 2000 PCsConfiguring Windows XP PCs Configuring the Router SetupWireless Administration Access RestrictionsSecurity Applications & GamingSetup Tab How to Access the Web-based UtilityBasic Setup Tab Internet SetupStatic Internet Connection Type Pptp Internet Connection Type Optional Settings Required by some ISPsNetwork Setup DynDNS.org Ddns TabAdvanced Routing Tab MAC Address Clone Tab See FigureMAC Clone Advanced Routing10 Routing Table Static Routing Wireless Tab Basic Wireless Settings See Figure Wireless Network WEP See Figure Wireless Security13 Wireless Network Access Wireless Network Access See Figure15 Advanced Wireless Settings Advanced Wireless Settings See FigureFirewall Security TabVPN 18 Manual Key Management 19 Advanced VPN Tunnel Setup WEP Access Restriction Access Restrictions Tab23 Internet Filter Summary Port Range Forwarding Applications and Gaming Tab27 Port Triggering Port Triggering28 UPnP Forwarding UPnP ForwardingDMZ Administration Tab Router PasswordManagement UPnP LogEmail Alert Syslog NotificationNotification Queue Length DiagnosticsAlert Log General Log33 Factory Default Router StatusInformation WAN Connections36 Local Network Local NetworkSystem Performance 38 WirelessAppendix a Troubleshooting Common Problems and SolutionsNeed to set a static IP address on a PC Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router TCP UDP Can’t get the Internet game, server, or application to work To start over, I need to set the Router to factory default Need to upgrade the firmwareFirmware upgrade failed, and/or the Power LED is flashing Power LED flashes continuously My DSL service’s PPPoE is always disconnectingWhere is the Router installed on the network? Frequently Asked QuestionsIs IPSec Pass-Through supported by the Router? Does the Router support IPX or AppleTalk?Does the Router support ICQ send file? What is Network Address Translation and what is it used for?How can I block corrupted FTP downloads? What are the advanced features of the Router? What is DMZ Hosting?Is the Router cross-platform compatible? How many ports can be simultaneously forwarded?What Ieee 802.11b features are supported? What is the Ieee 802.11g standard?What is ad-hoc mode? What is infrastructure mode?What is Spread Spectrum? What is ISM band?What is DSSS? What is FHSS? And what are their differences? What is WEP?How do I reset the Router? How do I resolve issues with signal loss?Have excellent signal strength, but I cannot see my network Appendix B Wireless Security Brief OverviewWhat Are The Risks? Jamming Attacks Passive AttacksActive Attacks Maximizing Wireless SecurityDictionary-Building or Table Attacks Man-in-the-Middle Attacks5SSID 8WEP Wireless-G VPN Broadband Router Figure B-2 WEP 4GHz/802.11b and 802.11g WEP EncryptionWRV54G EnvironmentCreate an IPSec Policy How to Establish a Secure IPSec TunnelBuild Filter Lists Filter List 1 win-routerFigure C-4 IP Filter List Filter List 2 router-winFigure C-7 IP Filter List Tunnel 1 win-router Configure Individual Tunnel RulesFigure C-13 Authentication Methods Tunnel 2 router-win Figure C-16 Tunnel Setting TabFigure C-19 IP Filter List Tab Figure C-22 Preshared Key Figure C-25 Connection Type Assign New IPSec PolicyFigure C-28 VPN Tab Create a Tunnel Through the Web-Based UtilityWindows 98 or Me Instructions Figure D-1 IP Configuration ScreenFigure D-3 MAC Address/Physical Address Windows 2000 or XP InstructionsAppendix E Snmp Functions Appendix F Upgrading Firmware Figure F-1 Upgrade FirmwareAppendix G Windows Help Shared ResourcesNetwork Neighborhood/My Network Places Appendix H Glossary Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router Wireless-G VPN Broadband Router Appendix I Specifications Transmit Power 19dBm LEDsUp to 54Mbps wireless, up to 100 Mbps LAN FCC Statement Appendix J Regulatory InformationFCC Part 68 Statement Safety Notices Limited Warranty Appendix K Warranty InformationAppendix L Contact Information
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