Black Box LE14XXA, Modular Switches manual

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Black Box Modular SwitchesInstallation and User Guide (8/99)

LE14XXA-Series Switches are constantly adapting internally to provide maximum network performance with the least dropped packets.

When the Switch detects that its free buffer queue space is low, the Switch sends industry standard (full-duplex only) PAUSE packets out to the devices sending packets to caus “flow control”. This tells the sending devices to temporarily stop sending traffic, which allows traffic catch-up to occur without dropping packets. Then, normal packet buffering and processing resumes. This flow-control sequence occurs in a small fraction of a second and is transparent to an observer. See Section 4.6 for additional details.

Another feature implemented in LE14XXA--Series Switches is a collision-based flow control mechanism (when operating at half-duplex only). When the Switch detects that its free buffer queue space is low, the Switch prevents more frames from entering by forcing a collision signal on all receiving half-duplex ports in order to stop incoming traffic.

The latency (the time the frame spends in the Switch before it is sent along or forwarded to its destination) of the LE14XXA-Series Switches varies with the port -speed type and the length of the frame is a variable here as it is with all store-and-forward switches. For 10 Mb-to-10 Mb or 10 Mb-to-100Mb or 100Mb-to-10 Mb forwarding, the latency is 15 microseconds plus the packet time at 10 Mb. For 100Mb-to-100Mb forwarding, the latency is microseconds plus the packet time at 100Mb.

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Contents Modular Switches Contacting Black Box Corporation TrademarksFCC Statement Black Box Modular Switches Installation and User Guide 8/99 Table of Contents Troubleshooting Connectors for copper wiring Technical Specifications PerformanceFiber Multi -mode connector types Network StandardsManual switch -selections and jumpers Fiber Single-mode connector typesPower Supply Internal 48VDC Power Supply OptionalAgency Approvals WarrantyLE1401A Model InformationLE1408A LE1416AIntroduction Inspecting the Package and Product LE14XXA-Series chassis models Product Description , 8-port and 16-port Modular SwitchesModular Switches 4-port modules, 10 Mb fiber 4-port modules, 100Mb fiberFiber 4-Port Modules, LE1420C, LE1419C LE1423C LE1422C Combo 4 Port Modules, 3 + 1, 3 RJ-45 and 1 fiber port 4 4-Port Module, RJ-45 copperFrame Buffering and Latency Page Front-mounted LEDs, world-wide AC power supply Plug-and-Play installation for high performance switchingFull-duplex or Half-duplex operation, auto-sensing Port, 12-port, 8-port and 4-port modelsExample 1 LE1401A ApplicationsXample 2 8-port LE1408A Example 3 16-port LE1416A 4c LE1416A provides a 100Mb mixed-media backbone SwitchLocating LE14XXA-Series Switches InstallationConnecting Fiber Optic ST-type, twist-lock Connecting Ethernet MediaIeee Standard Media Type Max. Distance Port Module Fiber CopperMedia Ieee Standard Connector Connecting Fiber Optic S C-type, Snap-InConnecting Single-Mode Fiber Optic Wall or Vertical Surface Mounting, 8-port LE1401A Table-Top or Shelf MountingProper mounting Magnum LE1401A, optionalFactory Settings 10/100 Mbps Factory Settings For RJ-45 Factory Settings 10Mbps Half- Duplex Powering the LE14XXA-Series Switch 10Mbps Fiber ports internal jumper settingsPage Preparation for Installing and Removing 4PMs Port Module 4PM InstallationEp 2. Remove Chassis Cover Gure 3.9.1a Removing Hassis Cover1c Front View 4PM Retaining Screws hold Face PlatesInstalling 4PM Cards in the LE14XXA-Series Inserting 4PM Cards Into a LE1416A 2b Top View 4PM Module Installed inside a LE1416A4PM Cards Address Learning Switching FunctionalityFiltering and Forwarding Status LEDs Power LED, on when AC power is applied to the unitFor all LE14XXA-Series models Steady ON, Link status for 10 Mbps and 100Mbps operationGeneral information Flow-control, Ieee 802.3x standard Auto-negotiation for 10 Mb ports, half- or full-duplex modeDistanc Module Product Description Introduction LE14XXA-Series 4-Port Modules4PMIEEE-specified 100Mbps shared-collision LE1421C 100Mbps single-mode FX-S C-type, snap-in connector Small-form-factor LE1425C Twisted Pair, 10/100Mb TP 4-Port 10/100BASE-T and 100BASE-FX Combo Quad-Port Connectors Fety, etc 10 4PM-FPBefore Calling for Assistance TroubleshootingShipping and Packaging Information When Calling for AssistanceBlack Box Corporation

LE14XXA, Modular Switches specifications

The Black Box LE14XXA series of modular switches are designed for high-performance networking in both small and medium enterprises, as well as in larger data center environments. These switches stand out due to their scalability, flexibility, and robust functionality, making them suitable for a variety of applications.

One of the main features of the LE14XXA modular switches is their modular design, allowing for the integration of various interface cards to tailor the switch to specific networking needs. This flexibility ensures that organizations can adapt their network architecture as requirements evolve, making it a future-proof investment. The switches support a range of modules, including Ethernet, fiber optics, and PoE (Power over Ethernet), which can be easily swapped out or added to support changing technology demands.

In terms of performance, the LE14XXA series offers impressive throughput capabilities, often supporting up to 10 Gbps per port. This speed is critical for businesses that rely on fast data transfer rates for tasks such as video conferencing, large file transfers, and real-time applications. The switches also feature advanced Layer 2 and Layer 3 functionalities, facilitating efficient data routing and switching, which is essential for maintaining effective network performance.

Security is another critical characteristic of the Black Box LE14XXA switches. They incorporate a variety of security protocols, including 802.1X port-based access control, VLAN support, and secure management interfaces, which help protect sensitive data and ensure compliance with industry standards. This makes them an excellent choice for organizations that prioritize data protection and regulatory compliance.

Ethernet redundancy protocols, such as Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP), enhance network reliability by providing failover options in case of link failures. Additionally, the LE14XXA switches feature energy-efficient designs that comply with energy-saving standards, which can significantly reduce operational costs over time.

User-friendly management interfaces, including a web-based GUI and command-line interface (CLI), simplify the configuration and monitoring processes. This ensures that IT administrators can efficiently handle the network without extensive training or experience.

Overall, the Black Box LE14XXA modular switches combine advanced technology, security features, and versatile design, making them a powerful choice for modern networking needs. Their adaptability and high performance offer businesses the capability to build scalable and secure networks that can grow alongside their operations.
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