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Broadcom Wireless LAN Adapter User Guide

Discussion in 'Articles' started by Toxic, Jun 11, 2005.

  1. Toxic

    Toxic Administrator Staff Member

    A Quick look at the Advanced Setting of the Broadcom Wireless Adapter Settings. This review was due to the release of Broadcom Adaptor Drivers from other vendors. The latest so far of these drivers is v3.100.65.1 these can be found here: Broadcom 3.100.65.1 Drivers
    These are Updated driver that Include WPA2 support and other new features. Here is a list of the Additional Settings from the Advanced Settings of the Wireless Adaptor. To access the Advanced tab to view the available properties, right-click the Wireless Network Connection icon in the notification area, click Properties, then click Configure from the General tab, and then click Advanced. You will then see the Advanced Menu.

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    The Advanced tab from the Broadcom 802.11 Wireless LAN Adapter Properties allows you to view and change the values of the available properties.
    To access the Advanced tab to view the available properties, right-click the Wireless Network Connection icon in the notification area, click Properties, click Configure from the General tab, and then click Advanced.

    To view the value of a property, click the name of the property in the Property list. The property value is displayed in the Value box. To change the value, click an option in the Value list or type a new value, as appropriate (selection options are different for different properties).

    The available properties and their respective settings are described below.
    NOTE: Some of the properties may not be available on your model of Broadcom 802.11 Wireless LAN Adapter. For those properties that are available, the default value may be different than indicated.

    802.11a
    This property allows you to specify the rate (in Mbit/s) at which data is transmitted for IEEE 802.11a operation. The possible values are: 6, 9, 12, 18, 24, 36, 48, and 54. The default is set to Use best Rate.
    NOTE: The default value for this property is set for maximum performance. Therefore, It is not recommended for home users to change the value. Only network administrators or technicians with wireless LAN experience should attempt to make any changes.

    802.11b/g
    This property allows you to specify the rate (in Mbit/s) at which data is transmitted for IEEE 802.11b/g operation. The possible values are: 1, 2, 5.5, 6, 9, 11, 18, 24, 36 48, and 54 . The default is set to Use best Rate.
    NOTE: The default value for this property is set for maximum performance. Therefore, It is not recommended for home users to change the value. Only network administrators or technicians with wireless LAN experience should attempt to make any changes.

    802.11h
    The 802.11h property configures the advanced radio control of the Broadcom 802.11 Wireless LAN Adapter by an associated access point. The features are enabled when set to either Loose or Strict. When set to Strict, the Broadcom 802.11 Wireless LAN Adapter will only associate to access points supporting IEEE 802.11h protocols when operating in regions with special restrictions on radio operation. When set to Loose, the Broadcom 802.11 Wireless LAN Adapter will not restrict associations based on the access point IEEE 802.11h support.
    Disabled (default)
    Loose
    Strict

    Antenna Diversity
    Antenna Diversity is a function included in most wireless LAN equipment that has two antennas, Main and Aux. When set to Auto, Antenna Diversity monitors the signal from each antenna and automatically switches to the one with the better signal.
    Auto (default).
    Aux.
    Main.

    Bluetooth Collaboration

    Bluetooth Collaboration enables general purpose input/output transmit suppression protocol between the IEEE 802.11 media access control (MAC) and an external Bluetooth chip to minimize transmit interference. Bluetooth Collaboration is enabled by default.
    Enable (default)
    Disable

    BSS Mode
    BSS mode is used to to restrict the IEEE 802.11b/g band to IEEE 802.11b only mode. BSS Mode applies to access point configured networks.
    Default (default)
    802.11b Only

    IBSS 54gâ„¢ Mode

    IBSS mode is used to restrict the IEEE 802.11b/g band to IEEE 802.11b only mode, to enable the Broadcom 802.11 Wireless LAN Adapter to automatically select the IEEE 802.11 b/g band, and to assign other preferences. IBSS Mode applies to ad hoc configured networks.
    802.11b Only (default)
    54g - Auto
    54g - LRS
    54g - Performance

    IBSS 54gâ„¢ Protection Mode

    A mechanism of prefixing each OFDM data frame with a request to send/clear to send (RTS/CTS) complimentary code keying (CCK) frame sequence. The duration fields of the RTS and CTS frames should allow the IEEE 802.11b node to correctly set its network allocation vector (NAV) and avoid collisions with the subsequent OFDM frames. As required for Wi-Fi®, protection mechanisms are enabled automatically whenever an IEEE 802.11b STA joins the BSS. If no IEEE 802.11b STA joins, then no protection mechanism is used and full IEEE 802.11g performance is attained.
    Auto
    Disabled

    IBSS Channel Number
    IBSS Channel Number selects the independent basic service set (IBSS) channel number on which to operate. The default channel for ad hoc networks is channel 11.

    IBSS Mode
    IBSS Mode is used to set the connection type in an ad hoc network. The following options are available:
    802.11b Mode (default). Links only with IEEE 802.11b networks at the highest rate. Also, it excludes IEEE 802.11g networks.
    Normal

    AP Compatibility Mode

    Some older APs may have implementations that deviate from IEEE 802.11 standards. Setting this property to Broader Compatibility enables your Broadcom 802.11 Wireless LAN Adapter to better communicate with such APs, but at the expense of some performance loss. The default setting is Higher Performance.
    Higher Performance (default)
    Broader Compatibility

    Locally Administered MAC Address
    Locally Administered MAC Address is used to override the MAC address of the Broadcom 802.11 Wireless LAN Adapter. The Locally Administered MAC Address is a user-defined MAC address that is used in place of the MAC address originally assigned to the network adapter. Every adapter in the network must have its own unique MAC address. This locally administered address consists of a 12-digit hexadecimal number.
    Value. Assigns a unique node address for the adapter.
    Not Present (Default). Uses the factory-assigned node address on the adapter. The appropriate assigned ranges and exceptions for the locally administered address include the following:
    The range is 0000 0000 0001 to FFFF FFFF FFFD.
    Do not use a multicast address (least significant bit of the high byte = 1).
    Do not use all 0s or all F's.

    Location
    Location selects the operating characteristics that comply with the regulations that apply in a particular country. The Location value in the Broadcom 802.11 enabled computer comes preset for the country in which the computer is sold. Before connecting to a wireless network, verify that the Location value is correct. If you travel to different countries with the Broadcom 802.11 enabled computer, change the Location value to match the destination country. If the destination country is not listed, change the Location value to Worldwide. Reset the Location value after returning. Residents of both Canada and the United States should reset the value to USA.

    Minimum Power Consumption
    When enabled, this property enables the wireless client to either turn off the radio or to not scan when the wireless client network is unassociated or when the computer is in the IDLE state.
    Disabled
    Enabled (default)

    PLCP Header
    PLCP Header is used to set the header type used for CCK rates. The type can be Long or Auto (short/long).
    Auto (Short/Long) (default)
    Long

    Power Output
    This property allows you to adjust the output power of the radio to 100%, 75%, 50%, or 25% of its normal output power.

    Power Save Mode
    Power Save Mode is used to put the Broadcom 802.11 Wireless LAN Adapter enabled computer into the IEEE 802.11 Power Save mode. In Power Save mode, the radio is periodically powered down to conserve power. When the radio is in Power Save mode, packets are stored in the AP until the radio comes on. Power Save Fast allows full throughput with power savings.
    Disabled (default)
    Enabled
    Fast

    Rate
    This property allows you to specify the rate (in Mbit/s) at which data is transmitted. The possible values are: 1, 2, 5.5, 6, 9, 11, 18, 24, 36 48, and 54 . The default is set to Use best Rate. This setting automatically adjusts the transmission rate to the optimal rate based on the capabilities of the other wireless clients and access points.
    NOTE: The default value for this property is set for maximum performance. Therefore, It is not recommended for home users to change the value. Only network administrators or technicians with wireless LAN experience should attempt to make any changes.

    Afterburner
    Afterburner is a Broadcom proprietary high-performance implementation of a faster throughput added to wireless products that conform to IEEE 802.11g.
    Disabled (default). Disables Afterburner.
    Enabled. Enables Afterburner

    Association Roam Preference
    This property is available only on Broadcom 802.11 Wireless LAN Adapter models that have dual-band capability. When enabled, this property works in conjunction with the Band Preference property and is triggered only when Band Preference is not set to None. Enabling Association Roam Preference maintains your band preference through roam transitions between access points using the same SSID.
    Disabled (default)
    Enabled

    Band Preference
    This property is available only on Broadcom 802.11 Wireless LAN Adapter models that have dual-band capability. Band Preference allows users to specify the IEEE 802.11 band preference while roaming. This allows the Broadcom 802.11 Wireless LAN Adapter to associate with another AP based on band preference even if the signal from the currently associated AP is strong enough to sustain the association.
    None (default) Roams without regard to the frequency band of the available APs.
    Prefer 802.11a (5 GHz)
    Prefer 802.11g/b band (2.4 GHz)

    Disable Bands
    This property is available only on Broadcom 802.11 Wireless LAN Adapter models that have dual-band capability.
    None (default)
    Disable 802.11g/b
    Disable 802.11a

    Fragmentation Threshold

    The maximum size in bytes at which packets are fragmented and transmitted a piece at a time instead of all at once. Available values range from 256 to 2346. The default value is 2346.

    Roaming Decision
    The signal strength value that determines when the Broadcom 802.11 Wireless LAN Adapter starts scanning for other APs.
    Default (default). -70 dB
    Optimize Bandwidth. -60 dB
    Optimize Distance. -80 dB

    Roam Tendency
    This property adjusts the roaming thresholds for the Broadcom 802.11 Wireless LAN Adapter.
    Moderate (default). Roams to APs having a signal strength at least 20 dB greater than the current access point.
    Aggressive. Roams to APs having a signal strength at least 10 dB greater than the current access point.
    Conservative. Roams to APs having a signal strength at least 30 dB greater than the current access point.

    RTS Threshold
    If the number of frames in the data packet is at or above the RTS Threshold, a request to send/clear to send handshake is turned on before sending the data packet. The default value is 2347. The range is 0 to 2347.

    WME
    Wireless Multimedia Extensions, now known as Wi-Fi Multimedia (WMMâ„¢). WME enables quality of service for audio, video, and voice applications over a wireless network by prioritizing streams of content and optimizing the way the network allocates bandwidth among competing applications.
    Disabled (default)
    Enabled

    WZC Managed Ethernet
    If enabled, Windows Zero Configuration Service (WZC), which is Windows wireless management software, will not be disabled, but will be configured to manage 802.1x connections for Ethernet devices in your system. This setting only applies if the Dell Wireless WLAN Card Utility is enabled to manage your Dell Wireless WLAN Card.
    Disabled (default).
    Enabled.

    Xpressâ„¢ Technology
    Xpressâ„¢ Technology is a proprietary frame bursting technology that improves throughput by repackaging data so that more data can be sent in each frame. Xpressâ„¢ Technology is disabled by default.
    Disabled (default). Disables Xpressâ„¢ Technology.
    Enabled. Enables Xpressâ„¢ Technology.
     

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