3Com Version 8.1.2 manual Emulated LAN LES and the Broadcast and Unknown Server BUS

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LAN Emulation 41

Eliminating Bridge When configuring more than one LEC in a LANplex 2500 or

Loops in ELAN CoreBuilder 2500 system, a bridge loop may be created. This possibility Configurations exists because the LANplex can bridge between all ports, including logical

bridge ports (LECs). Because the Spanning Tree Protocol (STP) is off by default, we recommend following this procedure when you create multiple LECs with Intelligent Switching software:

1After you define all LECs, at the Enable State prompt, enter enable

2Enable STP. From the top level of the Administration Console, enter: bridge stpState enabled

3Reboot the system.

The system adds the LECs to the bridge table.

Configuring Clients to You can configure a LAN Emulation Client (LEC) to join an existing 802.3 Join an Existing emulated LAN by providing information about the LAN Emulation Server

Emulated LAN (LES) and the Broadcast and Unknown Server (BUS).

Defining LAN Emulation Clients

When you define a LAN Emulation Client, you give information necessary for a client to be included in the emulated LAN. A BUS and a LES must already be defined as part of the emulated LAN before you can define a client.

When the client attempts to join the emulated LAN, some of the configured information is carried along with the join request sent to the LES. The LES can alter this information. The client then has the option of accepting or rejecting any changes made by the LES. If the changes are accepted or if there are no changes, the client successfully joins the emulated LAN. Otherwise, the join fails.

To define a client:

1From the top level of the Administration Console, enter: atm lane define

2Enter the number of the ATM port to which the client is attached. You can attach only one client per port to the same emulated LAN.

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Contents CoreBuilder Software Installation Release Notes 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents NEW Features in Intelligent Switching Software Version Technical Support Page Overview UpgradeBefore You Start ConsiderationsAbout Software Patch Descriptions of Fixed ProblemsVersion DescriptionsPatch System Issues Upgrade Considerations Chassis with Revision System Configuration Motherboard Outlines the configuration restrictionsSystem Halted Error Message for Unsupported ConfigurationsCustomer Documentation CustomerDocumentation Use this section in either of these cases Software Installation ProcedureIndicated sections Proceed to Installing the Diagnostic Software next At the User name prompt, enter your user name System softwareUpdateSystem prompts you for several items of information System reboot Loading the Expander File Proceed to Loading the Compressed Image next Example /c\3com\cb2500\lpexpandLoading the Compressed Image Reloading the Compressed Image Proceed to Rebooting the System nextRebooting the System System password From the top level of the Administration Console, enterYou are prompted for an access level to change Enter administerFiles Snmp MIB FilesHP Openview version Public MIBs Private MIBsRelease History Intelligent Switching softwareRelease Descriptions Version DescriptionRelease Descriptions Corebuilder 2500 Intelligent Switching Software Version New Features Features Physical ConfigurationEnter specific interface index numbers or all Displaying Interface InformationIp interface summary or ip interface detail Page Only be configured to a number between 30 and 60 minutes New Updated MIBsPage Administering ATM Network ATM in YourLAN Emulation Classical IPChecking Before You Configure ATMAppendix B Administering ATM VPI/VCI Broadcast and Unknown Server BUS Responsible for LAN Emulation Configuration Server Lecs The LecsLAN Emulation Defining LAN Emulation Clients Emulated LAN LES and the Broadcast and Unknown Server BUSBridge stpState enabled Enter the Lecs access type. Choices are lecs and manualReboot to enable all newly defined LECs Sample procedure Reboot after you have added all newly created LECsAtm lane detail Administering LAN Emulation ClientsDisplaying Information About LAN Emulation Clients Sample summary display for a LAN Emulation Client Sample detail display for a LAN Emulation Client CfgArpRespTime Parameter DescriptionEnabled Removing a LAN Emulation Client Modifying Information About LAN Emulation ClientsManagement Administering UNIEntities Displaying UMERegistration connected or disconnected Attribute DescriptionPrefixes Port Addresses To list prefixes and addresses Appendix B Administering ATM Channel connection VCC information for ATM ports Administering ATMPorts Field Description Describes the fields in the port displaysAdministering ATM Ports Atm ports vcc list Information Listing General VCC InformationSample display of general VCC information Describes the fields in the displayAtm ports vcc listxmt Listing VCC Transmit InformationSample display of VCC transmit information Describes the fields in the VCC transmit displayAtm ports vcc listrcv Listing VCC Receive InformationSample display of VCC receive information Describes the fields in the VCC receive displayOnline Technical ServicesUsername anonymous Access by Analog ModemHours a day, 7 days a week Country Data Rate Telephone Number408 727 Access by Digital Modem847 262 A. and Canada 800 876 Compliance Year3Com Year 2000 Web Country Telephone Number Fax Number

Version 8.1.2 specifications

3Com Version 8.1.2 is a notable release in the realm of networking technologies, offering enhanced performance and new features to adapt to the evolving landscape of network demands. Released by 3Com, a pioneer in networking products, this version brings forward several improvements aimed at ensuring reliability, scalability, and security in enterprise environments.

One of the standout features of 3Com Version 8.1.2 is its enhanced performance metrics. The update has been engineered to optimize throughput and minimize latency across network connections. This makes it particularly advantageous for organizations that rely on real-time data transmission, such as those in finance or real-time communications. With the ability to handle increased traffic loads without compromising performance, Version 8.1.2 solidifies 3Com’s reputation for creating robust networking solutions.

Another significant aspect of this version is its advanced security features. Cybersecurity threats continue to grow in complexity, and 3Com has addressed this challenge head-on. Version 8.1.2 integrates sophisticated firewall capabilities and intrusion detection systems, which can help prevent unauthorized access and safeguard sensitive data. The incorporation of features like Virtual LAN (VLAN) tagging provides better control over network segments, allowing IT administrators to segment traffic and enforce more granular security policies.

Moreover, 3Com Version 8.1.2 supports the latest networking technologies, including Voice over IP (VoIP) and wireless standards. This ensures that organizations can seamlessly converge their voice and data networks, enhancing collaboration and communication efficiency. The support for Power over Ethernet (PoE) enables devices such as IP phones and security cameras to receive power through the network cabling, simplifying installations and reducing the need for separate power sources.

Additionally, the version places a significant emphasis on management and monitoring. The intuitive user interface and enhanced tools for network management allow administrators to easily configure, monitor, and troubleshoot networking devices. Features like real-time analytics and reporting foster a proactive approach to network management, enabling timely responses to potential issues before they escalate.

In conclusion, 3Com Version 8.1.2 stands out as a comprehensive networking solution characterized by its enhanced performance, advanced security features, support for modern technologies, and robust management tools. Organizations that implement this version can expect improved network efficiency, greater security, and an overall elevation in their operational capabilities, affirming 3Com’s continued relevance in the networking industry.
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