Foundry Networks OSI manual Making Vlan Connections

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APPLICATION EXAMPLES

Making VLAN Connections

VLANs can be based on port groups, or each data frame can be explicitly tagged to identify the VLAN group it belongs to. When using port-based VLANs, ports can either be assigned to one specific group or to all groups. Port-based VLANs are suitable for small networks. A single switch can be easily configured to support several VLAN groups for various organizational entities (such as Finance and Marketing).

When you expand port-based VLANs across several switches, you need to make a separate connection for each VLAN group. This approach is, however, inconsistent with the Spanning Tree Protocol, which can easily segregate ports that belong to the same VLAN. When VLANs cross separate switches, it is therefore better to use VLAN tagging. This allows you to assign multiple VLAN groups to the “trunk” ports (that is, tagged ports) connecting different switches.

Figure 3-4. Making VLAN Connections

R&D

VLAN 1

Tagged

Ports

Finance

VLAN 2

Testing

VLAN 3

VLAN 4

Untagged Ports

Tagged Port

VLAN

unaware

switch

Marketing

Finance

VLAN 3

VLAN aware switch

R&D

Testing

VLAN 1

VLAN 2

Note: When connecting to a switch that does not support IEEE 802.1Q VLAN tags, use untagged ports.

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 aIndustry Canada Class a Japan Vcci Class aImmunity Taiwan Bsmi Class a Australia AS/NZS 3548 1995 Class a Safety Compliance Warnhinweis Faseroptikanschlüsse Optische SicherheitUnderwriters Laboratories Compliance Statement 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 AboutSwitch Architecture Switching MethodManagement Options Description of Hardware 10BASE-T/100BASE-TX Ports1000BASE-T/SFP Ports Status LEDs Port Status LEDsCondition Status FDX Power Supply Receptacles Optional Redundant Power UnitFeatures and Benefits ConnectivityPerformance 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 SwitchEquipment Checklist Package ContentsOptional Rack-Mounting Equipment 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 InstallationSpecifications Cable Types and Specifications Max. Length ConnectorAppendix B Cables Twisted-Pair Cable and Pin Assignments RJ-45 Connector Pin NumbersPin MDI-X Signal Name MDI Signal Name 100BASE-TX/10BASE-T Pin AssignmentsRJ-45 Pin Assignments 1000BASE-T Pin Assignments Pin MDI Signal Name MDI-X Signal NameCable Testing for Existing Category 5 Cable Adjusting Existing Category 5 Cabling to Run 1000BASE-T1000BASE-T Cable Requirements 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 FeaturesSafety CompliancesCE Mark Emissions Foundry Networks, Inc Glossary 1000BASE-TAuto-Negotiation 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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