Applications

Bridging

An Ethernet bridge intelligently forwards Ethernet data packet traffic between connected networks. The traffic may be across the Wide Area Network (illustrated below) or, in the case of the router, may be between two LANs connected to the same unit.

WAN connection

Network #1

Network #2

Windows for Workgroups Computers

Windows for Workgroups Computers

Figure 2 -1 Networks Bridged across a WAN link

Ethernet bridges simply forward information based on Ethernet MAC addresses. If a packet is destined for a device located on a different network than the device that sent the packet, the bridge will forward that packet to the connected network. If a packet is destined for a device located on the same local network as the originating device, the bridge will ignore the packet.

Ethernet bridges also communicate to each other using what is called the Spanning Tree Protocol (STP). STP is used to prevent loops in a network which cause traffic to be re- broadcast again and again causing network congestion.

The router are pre-configured to operate as an Ethernet bridge compatible with the IEEE 802.1d Spanning Tree Protocol definitions. This means that without configuration modifications, the router will bridge Ethernet traffic to its partner bridges when the Wide Area Network (WAN) connection has been established.

This product is also pre-configured as an IPX router. This means that if you wish to bridge IPX traffic instead of routing it, you must disable the IPX routing function of the router. Once IPX routing has been disabled, all IPX traffic will be bridged between networks.

To set-up a bridge between two LANs using a dual LAN router, all that is required is that the LANs be connected to the router.

To set-up a bridge between two networks connected by a WAN link:

−Connect each router to the LAN(s) it will be serving

−Connect the WAN interface of each router to the equipment supplied by the service provider

−Configure the remote site profile of the partner router if necessary

−Establish the WAN connection

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Black Box LR5200A-R2, LR5100A-T manual Bridging, Networks Bridged across a WAN link
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LR5200A-R2, LR5100A-T specifications

The Black Box LR5100A-T and LR5200A-R2 are advanced network media converters designed to facilitate seamless data transmission across various media types. These devices are particularly valuable for organizations seeking high-performance solutions for extending network communications beyond traditional limits.

The LR5100A-T is an Ethernet media converter that operates over twisted pair cabling, efficiently converting 10/100/1000 Mbps Ethernet signals into fiber optic signals. This capability allows businesses to harness the long-distance advantages of fiber optics while maintaining compatibility with existing Ethernet infrastructure. With a broad range of supported distances, users can effectively communicate over distances up to 100 kilometers, depending on the type of fiber optic cable used and the transmission rate.

In contrast, the LR5200A-R2 emphasizes compatibility with a wider range of fiber types and supports both multimode and single-mode fiber connections. It also provides auto-negotiation capabilities, which enable it to automatically detect and configure to the optimal speed of connected devices, streamlining setup and enhancing user experience.

One of the key features of both the LR5100A-T and LR5200A-R2 is their rugged design, making them suitable for deployment in harsh environments. They are engineered to withstand extreme temperatures and are resistant to vibration, ensuring reliability in challenging settings. Additionally, both models adhere to industry standards, ensuring interoperability with a diverse array of networking equipment.

Notably, these converters come equipped with LED indicators that allow for real-time monitoring of device status, simplifying network management and troubleshooting. This feature ensures that technicians are promptly alerted to any connectivity issues, significantly reducing downtime.

Powering options for both models include standard AC power supplies or Power over Ethernet (PoE), allowing for flexible deployment scenarios without the need for additional power outlets. This flexibility can be a crucial factor in environments where power availability may be limited.

With their blend of performance, durability, and advanced features, the Black Box LR5100A-T and LR5200A-R2 media converters represent a solid choice for organizations looking to future-proof their network infrastructure while ensuring high levels of connectivity and reliability. Whether extending existing networks or implementing new solutions, these devices provide the necessary tools for effective communication in today’s digital world.
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