Cisco Systems 4034138, DPC3825 Section Field Description Dtim Interval, Fragmentation Threshold

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Configure Wireless Settings

Section

Field Description

 

DTIM Interval

 

The Delivery Traffic Indication Message (DTIM) indicates the interval between

 

Broadcasts/Multicast transmissions. DTIM field is a countdown field informing

 

clients of the next window for listening to broadcast and multicast messages. When

 

the device 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.

 

(Default: 1, Range: 1-255)

 

 

 

Fragmentation Threshold

 

The fragmentation threshold value 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 reduction

 

of the default value is recommended. In most cases, it should remain at its default

 

value of 2346.

 

 

 

RTS Threshold

 

The RTS Threshold determines at what packet size beyond which the ready to

 

send/clear to send (RTS/CTS) mechanism is invoked. Should you encounter

 

inconsistent data flow, only minor reduction of the default value, 2346, is

 

recommended. If a network packet is smaller than the preset RTS Threshold size,

 

the RTS/CTS mechanism will not be enabled. The device 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. The RTS Threshold

 

value should remain at its default value of 2347.

 

 

4021196 Rev B

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Contents This Document Important Safety InstructionsImportant Safety Instructions Aviso a los instaladores de sistemas Catv Mitteilung für CATV-TechnikerGround the Product Power Source WarningProtect the Product from Lightning Verify the Power Source from the On/Off Power LightProtect the Product When Moving It Check Product SafetyCanada EMI Regulation United States FCC ComplianceDeclaration of Conformity Australia Dynamic Frequency Selection DFS Dual Band FrequenciesRadiation Exposure Statements CanadaCE Compliance France Italy National RestrictionsLatvia AntennasIntroduction Benefits and FeaturesIntroduction Whats In the Carton? Front Panel Description Back Panel Description Back Panel Description System Requirements for an Ethernet Connection What Are the System Requirements for Internet Service?Minimum System Requirements for a PC Minimum System Requirements for MacintoshAlready Have an Existing High-Speed Internet Access Account How Do I Subscribe to High-Speed Internet Service?Do Not Have a High-Speed Internet Access Account Rev B Before You Begin How Do I Mount the Modem on a Wall? OptionalLocation and Dimensions of the Wall-Mounting Slots Mounting the Residential Gateway on a Wall To connect devices How Do I Connect My Gateway for Internet Service?Connecting and Installing Internet Devices How Do I Connect My Gateway for Internet Service? Logging in to the Gateway for the First Time How Do I Configure My Docsis Residential Gateway?How Do I Configure My Docsis Residential Gateway? Setup Quick Setup Configuring Quick Settings Wlan LAN Setup Lan SetupConfiguring Your Network Settings Starting IP Address Dhcp Connected Devices Summary  Pre-assigned Dhcp IP AddressesSetup Ddns Ddns Disabling Ddns Factory Default SettingsWi-Fi Protected Setup WPS Configure Wireless SettingsWireless Basic Settings WPS Push Button Setup Option Section Field Description Basic SettingsWi-Fi Protected Setup Configuration WPS Setup Using the Gateway PIN Option Only, B/G Mixed, B/G/N Mixed factory default Section Field Description Basic Settings Wireless NetworkWireless Configuration Network ModeBroadcast Ssid Wireless Wireless SecuritySection Field Description Wireless Network Name Ssid BssidField Descriptions Wireless Security Page DescriptionSection Field Description Wireless Wireless Security Mode WEPWPA2-Personal WPASecurity for Personal Networks WPA or WPA2 Personal Modes WPA-PersonalConfigure Wireless Settings Wireless MAC Filter Page Description Wireless MAC FilterMAC Address Filter List Wireless Advanced SettingsSection Field Description Access Access Restriction Wireless Advanced Settings Page Description Beacon Interval CTS Protection ModeRTS Threshold Section Field Description Dtim IntervalFragmentation Threshold WDS Wireless WDS SettingsWireless WDS Settings Page Description Disable Wireless QoSWireless QoS Page Description Section Field Description No ACK EnableSection Field Description Firewall SPI Firewall Protection Configure SecuritySecurity Firewall Block Java and ActiveX Scripts Section Field Description Filters Filter ProxyBlock Pop-Up Windows Block Web Page CookiesIPSec Passthrough Disable Pptp PassthroughSecurity VPN Passthrough VPNSecurity VPN Security VPN Tunnel Page Description Key Management Key Exchange Method Section Field Description RemoteFqdn Manual Section Field Description KeyAuto IKE Connected or Disconnected Advanced SettingsPhase 1 Operation Mode Section Field Description StatusView Log Access Restrictions MAC Address Filtering Control Access to the GatewayAccess Restrictions IP Address Filtering Function Keys Access Restrictions Basic Rules Keyword List Parental Control check box and click ApplyAdd Rule Remove RuleAccess Duration Block Access to WebsitesSection Field Description Override the Password Password Re-Enter PasswordAccess Restrictions Time of Day Rules Page Description Access Restrictions Time of Day RulesAccess Restrictions User Setup Access Restrictions User Setup Page Description Section Field Description Inactivity Time Access Restrictions Local LogApplications and Gaming Port Filtering Page Description Configure Applications and GamingOverview Applications & Gaming Port FilteringEnd Port  UDP  Both EnableApplications & Gaming Port Range Forwarding Section Field Description Port Filtering Start PortIP Address Applications and Gaming Port Range Forward Page DescriptionSection Field Description Port Range Forwarding Start EndForwarded Range Start Port Applications & Gaming Port Range TriggeringSection Field Description End Port Applications & Gaming DMZSelect the desired option Applications and Gaming DMZ Page DescriptionDMZ DMZ HostingManage the Gateway Administration ManagementAdministration Management Page Description Rev B MTU Igmp Field Description Remote Access Remote ManagementManagement Port UPnPMail Address for Alert Logs Administration ReportingSection Field Description Reporting Mail Alerts Smtp Mail ServerView Log Administration Diagnostics Administration Backup & Restore Restore Factory Defaults Administration Factory DefaultsCurrent Time Monitor Gateway StatusStatus Gateway MAC Address CM MAC AddressWins Status Local NetworkSection Field Description Internet Connection IP Address DNS1-3End IP Address Section Field Description IP AddressStatus Wireless Security Status Wireless Page DescriptionNetwork Name Ssid Wide ChannelDocsis WAN Page Description Status Docsis WANCurrent Software Revision Bootloader RevisionDisplays the boot revision code version Section Field Description MAC Address CM MAC AddressHow Do I Configure TCP/IP Protocol? Frequently Asked QuestionsHow Do I Renew the IP Address on My PC? What if I dont subscribe to cable TV? How do I arrange for installation?Renewing the IP Address on Windows NT, 2000, or XP Systems Can I watch TV and surf the Internet at the same time? Common Troubleshooting IssuesDont understand the front panel status indicators How does the residential gateway connect to my computer?Check and Correct Tips for Improved PerformanceStep Front Panel LED Status Indicator FunctionsFront Panel Indicator Data Network Registration Complete Front Panel LED Status Indicators During Normal Conditions Normal Operations AC Power appliedSpecial Conditions Front Panel LED Status Indicators During Special ConditionsDocumentation Copyright Notice TrademarksDisclaimer Software and Firmware Use Region Assistance Centers Telephone and Fax Numbers Customer ServiceFor Information If You Have QuestionsRev B 103
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4034138, EPC3825, 4034441, DPC3825 specifications

Cisco Systems has long been a pioneer in networking technologies, and the DPC3825, EPC3825 models are prime examples of its commitment to providing reliable and advanced solutions for consumers and businesses alike. These models are equipped with features that cater to a variety of networking needs, making them ideal for both residential and small business environments.

At the heart of the Cisco DPC3825 and EPC3825 is a powerful DOCSIS 3.0 cable modem that supports multiple downstream and upstream channels, allowing for high-speed internet connectivity. This capability enhances the overall bandwidth management, enabling multiple users to enjoy seamless internet access. With download speeds of up to 600 Mbps and upload speeds reaching 120 Mbps, these devices ensure that high-definition streaming, online gaming, and video conferencing can occur without interruptions.

One key feature of these models is their integrated Wi-Fi capabilities. Utilizing dual-band wireless technology, the DPC3825 and EPC3825 can operate on both 2.4GHz and 5GHz bands, providing greater flexibility and reduced interference. This setup allows users to connect a range of devices, from smartphones and tablets to smart home equipment, without compromising on performance.

Security is a priority in today’s online landscape, and Cisco has incorporated advanced security measures into these models. They come equipped with robust firewalls, encryption protocols, and support for various authentication methods, ensuring that users’ data remains safe from unauthorized access. Moreover, the user-friendly web interface allows for easy network management and configuration, enabling users to customize their settings according to their specific needs.

The DPC3825 and EPC3825 are also designed with energy efficiency in mind. The devices consume minimal power while still delivering robust performance, contributing to lower electricity bills and a reduced environmental footprint. Their compact design allows for easy placement in any home or office environment, making them unobtrusive yet effective.

Furthermore, these models offer features like Quality of Service (QoS), which prioritizes bandwidth for high-priority applications such as video streaming and VoIP calls. This ensures that all activities on the network operate smoothly, even during peak usage times.

In summary, Cisco's DPC3825 and EPC3825 cable modems exemplify high performance, security, and energy efficiency. With their advanced features and technologies, they cater to the evolving needs of users, making them a preferred choice for reliable internet connectivity in homes and small businesses.