Foundry Networks OSI 1000BASE-T Cable Requirements, Cable Testing for Existing Category 5 Cable

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TWISTED-PAIR CABLE AND PIN ASSIGNMENTS

1000BASE-T Cable Requirements

All Category 5 UTP cables that are used for 100BASE-TX connections should also work for 1000BASE-T, providing that all four wire pairs are connected. However, it is recommended that for all critical connections, or any new cable installations, Category 5e (enhanced Category 5) or 6 cable should be used. The Category 5e and 6 specifications include test parameters that are only recommendations for Category 5. Therefore, the first step in preparing existing Category 5 cabling for running 1000BASE-T is a simple test of the cable installation to be sure that it complies with the IEEE 802.3ab standards.

Cable Testing for Existing Category 5 Cable

Installed Category 5 cabling must pass tests for Attenuation, Near-End Crosstalk (NEXT), and Far-End Crosstalk (FEXT). This cable testing information is specified in the ANSI/TIA/EIA-TSB-67 standard.

Additionally, cables must also pass test parameters for Return Loss and Equal-Level Far-End Crosstalk (ELFEXT). These tests are specified in the ANSI/TIA/EIA-TSB-95 Bulletin, “The Additional Transmission Performance Guidelines for 100 Ohm 4-Pair Category 5 Cabling.”

Note that when testing your cable installation, be sure to include all patch cables between switches and end devices.

Adjusting Existing Category 5 Cabling to Run 1000BASE-T

If your existing Category 5 installation does not meet one of the test parameters for 1000BASE-T, there are basically three measures that can be applied to try and correct the problem:

1.Replace any Category 5 patch cables with high-performance Category 6 cables.

2.Reduce the number of connectors used in the link.

3.Reconnect some of the connectors in the link.

February 2003

© 2003 Foundry Networks, Inc.

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Contents Foundry EdgeIron 4802CF Installation Guide Page RFI Emission CompliancesFCC Class a EC Conformance Declaration Class aImmunity Industry Canada Class aJapan Vcci Class a Taiwan Bsmi Class a Australia AS/NZS 3548 1995 Class a Underwriters Laboratories Compliance Statement Safety ComplianceWarnhinweis Faseroptikanschlüsse Optische Sicherheit Wichtige Sicherheitshinweise Germany Foundry Networks, Inc Contents Making Network Connections Installing the SwitchGlossary Index Foundry Networks, Inc Nomenclature How to Get HelpChapter About this Guide AudienceTelephone Access Warranty CoverageWeb Access Mail AccessOverview Chapter AboutManagement Options Switch ArchitectureSwitching Method 1000BASE-T/SFP Ports Description of Hardware10BASE-T/100BASE-TX Ports Condition Status Status LEDsPort Status LEDs FDX Power Supply Receptacles Optional Redundant Power UnitPerformance Features and BenefitsConnectivity Gvrp ManagementChapter Network Planning Introduction to SwitchingCollapsed Backbone Application ExamplesCentral Wiring Closet Central Wiring ClosetRemote Connections with Fiber Cable Collapsed Backbone Using Fiber CableMaking Vlan Connections Making Vlan ConnectionsMbps Gigabit Ethernet Collision Domain Connectivity RulesMaximum Ethernet Cable Distance Mbps Fast Ethernet Collision DomainMbps Ethernet Collision Domain Maximum Fast Ethernet Cable DistanceApplication Notes Selecting a Site Installing the SwitchOptional Rack-Mounting Equipment Equipment ChecklistPackage Contents Rack Mounting MountingAttaching the Brackets Attaching the Adhesive Feet Desktop or Shelf MountingPower Receptacle Connecting to a Power SourceCabling Guidelines Connecting Network DevicesChapter Making Network Connections Twisted-Pair DevicesMaking Twisted-Pair Connections Connecting to PCs, Servers, Hubs and SwitchesWiring Closet Connections Wiring Closet Connections Appendix a TroubleshootingDiagnosing Switch Indicators Power and Cooling ProblemsIn-Band Access InstallationAppendix B Cables SpecificationsCable Types and Specifications Max. Length Connector Twisted-Pair Cable and Pin Assignments RJ-45 Connector Pin NumbersRJ-45 Pin Assignments Pin MDI-X Signal Name MDI Signal Name100BASE-TX/10BASE-T Pin Assignments 1000BASE-T Pin Assignments Pin MDI Signal Name MDI-X Signal Name1000BASE-T Cable Requirements Cable Testing for Existing Category 5 CableAdjusting Existing Category 5 Cabling to Run 1000BASE-T DB-9 Port Pin Assignments Console Port Pin AssignmentsPort Console Port to 25-Pin DTE Port on PCFoundry Networks, Inc Physical Characteristics Appendix C SpecificationsHumidity TemperaturePower Supply Power ConsumptionSwitch Features Standards Management FeaturesCE Mark Emissions SafetyCompliances Foundry Networks, Inc Auto-Negotiation Glossary1000BASE-T End Station BandwidthCollision Collision DomainIeee 802.3ab Gigabit EthernetFull Duplex IeeeSwitched Ports Media Access Control MACRedundant Power Unit RPU RJ-45 ConnectorVirtual LAN Vlan Transmission Control Protocol/Internet Protocol TCP/IPGlossary-6 Foundry Networks, Inc Numerics IndexIndex Index-3 Index-4 Foundry Networks, Inc

OSI specifications

Foundry Networks, a subsidiary of Broadcom Inc., has been a significant player in the networking industry, offering a range of products and solutions focused on high-performance and scalable networking. One of the key products from Foundry Networks is its operating system, known as Foundry Networks OSI (Operating System Interface). This proprietary operating system is designed to support the firm’s line of switches and routers, emphasizing robust performance, enhanced reliability, and comprehensive management capabilities.

A standout feature of Foundry Networks OSI is its modular architecture, which allows for easy upgrades and customization. This design enables users to add new protocols or services without disrupting existing functionalities. The OS is built on a multi-threaded architecture, ensuring efficient processing and handling of multiple tasks simultaneously. This feature is particularly crucial for environments requiring low latency and high throughput, such as data centers and enterprise networks.

Foundry Networks OSI supports a variety of advanced networking technologies, including Layer 2 and Layer 3 switching, VLAN (Virtual Local Area Network) support, and advanced routing protocols like OSPF (Open Shortest Path First) and BGP (Border Gateway Protocol). These technologies ensure that the network can efficiently handle traffic management while maintaining high availability and redundancy.

Another notable characteristic of the OSI is its support for IPv6, which is essential as more organizations transition to the newer protocol to accommodate the growing number of Internet-connected devices. Through enhanced quality of service (QoS) features, Foundry Networks OSI allows administrators to prioritize traffic, ensuring that mission-critical applications receive the bandwidth they require.

Security is a critical concern in modern networking, and Foundry Networks OSI addresses this need with robust security features. The system includes access control lists (ACLs), port security options, and support for 802.1X authentication to provide secure access to the network. These security measures help to protect the network from unauthorized access and potential threats.

Moreover, the OSI offers an intuitive management interface, simplifying the task of monitoring and configuring network devices. GUI-based and CLI (Command-Line Interface) management options cater to different preferences and skill sets, making it easier for network administrators to maintain and optimize their networks.

In summary, Foundry Networks OSI stands out for its modular design, support for advanced networking technologies, robust security features, and user-friendly management interface. These characteristics make it a suitable choice for organizations that prioritize high performance, reliability, and scalability in their networking solutions. As enterprises continue to evolve, Foundry Networks OSI remains a relevant and powerful tool in the networking landscape.
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