3Com 11 Mbps manual Setting Data, Transmission, Properties

Page 33

 

Setting Data Transmission Properties 27

 

To turn off the access point DHCP server capability regardless of whether or not

 

another DHCP server is available, click Disable and click Save.

 

■ Gateways—You can specify up to three additional gateway IP addresses.

 

These settings are optional. (Only the default gateway is required).

 

 

Setting Data

The Data Transmission Properties page lets you select radio channel settings and

Transmission

performance settings. This page contains a link to the Advanced Settings page,

Properties

where you can set additional data transmission properties.

 

■ Clear Channel Select—Lets the access point find a channel automatically.

 

When this option is enabled, the access point scans the primary channels to

 

determine the traffic on those channels and chooses the channel with the least

 

number of packets.

 

By default, the access point automatically selects the optimal channel for

 

wireless transmissions. The access point will select between channels 1–13. If

 

your network supports clients that do not acknowledge 13 channels, you will

 

have to manually select a channel within the reach of those clients. For

 

example, if you have clients that only support channels 1–11, you must

 

manually set the access point to use a specific channel in that range.

 

If France, you must manually select from channels 10–13.

 

To select a specific channel, click the off (Specify the channel) button and

 

choose a channel from the Channel list.

 

■ Network Traffic Accelerator—To increase performance, click On (enhanced

 

performance). If you experience problems when equipment other than 3Com

 

11 Mbps Wireless LAN equipment is being used, click Off.

 

■ Data Preamble—To increase performance, click Short (enhanced

 

performance). When equipment that does not support short preamble is also

 

being used, click Long.

 

■ Data Rate—These settings configure the data rates used for wireless

 

transmissions. By default, the access point selects the best data rate for the

 

current connection.

 

If “Automatically set the best data rate” is selected, the Data Rate cannot be

 

selected manually.

 

If “Manually set the data rate” is selected, the 5.5Mbps and 11Mpbs options

 

become active. You may not alter the settings for the 1Mbps and 2Mbps rates

 

since these rates must always be available to transmit certain types of wireless

 

traffic.

 

The data rates may either be Required or Optional. When the data rate is set to

 

Optional, the AP determines if it is appropriate to use that data rate or if the

 

signal strength requires a lower data rate to be used. If the data rate is set to

 

Required, the AP does not have the option to modulate to a lower data rate,

 

and may lose connection with clients that cannot support the higher data rate.

 

■ Beacon Period—The beacon period sets the amount of time between

 

beacons sent out from the AP. Normally you will not have to change this

 

setting, although it can be useful in extremely noisy RF environments.

 

■ Radio Antenna—These settings determine whether the radio will use one or

 

two antennas. If the user attaches an external antenna, this parameter should

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Contents Version Mbps Wireless LAN Access Point User GuideBayfront Plaza 3Com CorporationSanta Clara, California 95052-8145Contents Conducting a Site Survey Regulatory Compliance Information Index Page Introduction Access Point 8000 Feature SummaryManagement tools Installation OverviewInstallation Overview Page Deciding Where to Installing the Access PointBefore You Begin Place EquipmentPlacing the Access ConnectingAttached before the access point is installed Standard AntennaPlacing the Access Point SET Connecting Power Ethernet Network Connecting to anChecking the LEDs As shown belowModel number 3CWE490 3CWE492 3CWE497 3CWE498 Omnidirectional AntennaCeiling Mount Hallway Antenna Ceiling Mount Omnidirectional AntennaDirectional Panel Antenna Side Installing Software Utilities Page Access Point Security AuthenticationUpper-Layer Access Point Security 802.1x Radius Using the WirelessSupport 802.1x AgentEAP-MD5 Using the Wireless 802.1x Agent Page Installing the Device Configuring the Access Point3Com 11 Mbps Wireless LAN Access Point 8000 Configuration ManagerClick Configure Display help on the contents of that UsingConfiguration Management SystemSetting Network Properties Setting Data TransmissionProperties Data Transmission Setting AdvancedSetting up Security Access List Setting up a UserSaved passwords on the clients ListAddress Access List Setting up a MACDefining Radius ServersDefining a Tftp Server Setting up aSystem Log Upgrading the SystemPassword AdministrationDefaults Resetting the AccessViewing Statistics Viewing System Status Configuring the Access Point Choosing Trial Conducting a Site SurveyLocations EnvironmentalSummary Survey ProcedureSetting up Equipment Site Survey ToolLaunching the Tool Results Interpreting TestLAN Site Survey window Site Survey MenusPage Symptom Solutions TroubleshootingContinue to configure the access point using the old IP Services Technical SupportOnline Technical Country Telephone Number Asia, Pacific Rim Europe and South Africa Country Telephone Number Europe, Middle East and AfricaLatin America North AmericaCountry Telephone Number Fax Number Regulatory Compliance Information European Community CE Index Snmp management

11 Mbps specifications

3Com 11 Mbps was a pivotal product in the evolution of networking technology, paving the way for wireless communications as we know them today. Introduced in the late 1990s, this wireless LAN (Local Area Network) product utilized the IEEE 802.11 standard, which defined the protocols for wireless networking. Operating at a maximum data rate of 11 megabits per second, it offered users a revolutionary means of connecting devices without the constraints of physical cabling.

One of the main features of the 3Com 11 Mbps solution was its simplicity and ease of installation. Unlike traditional wired networks that involved intricate setups of cabling and switches, 3Com facilitated a swift deployment process. Users could set up a wireless network in minutes, allowing organizations to enhance their productivity without extensive infrastructure.

The technology behind 3Com 11 Mbps was based on Direct Sequence Spread Spectrum (DSSS) modulation. This approach spread the signal over a wider frequency range, which improved resistance to interference from other devices. The 2.4 GHz frequency band used by this network supported compatibility with various devices, making it a flexible option for businesses and homes alike.

In terms of security, 3Com incorporated Wired Equivalent Privacy (WEP), which aimed to provide a level of data confidentiality comparable to that found in wired networks. However, WEP was later found to have vulnerabilities, leading to the development of more secure protocols like WPA (Wi-Fi Protected Access) and WPA2 in subsequent technologies.

Another characteristic that distinguished the 3Com 11 Mbps system was its ability to support multiple devices simultaneously. With the emergence of wireless laptops, printers, and other peripherals, a single access point could service several users without significant performance degradation.

Ultimately, the 3Com 11 Mbps was a significant stepping stone in the development of wireless technology. It showcased the potential of wireless networking and set the standard for future innovations. Although much faster and more secure wireless technologies have since emerged, the legacy of 3Com 11 Mbps resides in the fundamental advancements it brought to the realm of connectivity, making it easier and more accessible for users around the globe.
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