Extreme Networks 50021 BLN / BCN Quad Token Ring Module

Overview
The Extreme Networks BLN / BCN Quad Token Ring Module (part number 50021) is a high-performance, modular interface designed to bring reliable Token Ring connectivity to modern network environments. Engineered for seamless integration with Extreme Networks chassis platforms, this module supports four independent Token Ring ports, delivering robust data transport for legacy systems while maintaining compatibility with current network management tools. Its compact, hot-swappable design minimizes downtime and simplifies upgrades, making it an ideal choice for organizations that need to preserve existing Token Ring investments without sacrificing performance.

Key Features

• Quad port configuration provides four simultaneous Token Ring connections
• Hot-swappable design reduces service interruption during installation or replacement
• Full support for IEEE 802.5 Token Ring standards
• Integrated diagnostics and LED status indicators for quick troubleshooting
• Compatibility with Extreme Networks chassis and management software
• Low power consumption for efficient operation in dense rack environments

Technical Specifications

• Model/Part Number: 50021
• Port Type: Token Ring (IEEE 802.5)
• Number of Ports: 4
• Data Rate: 4 Mbps per port
• Connector Type: RJ45 with shielded cabling
• Operating Temperature: 0 to 50 degrees Celsius
• Power Supply: Draws power from the host chassis, no external adapter required
• Dimensions: Fits standard Extreme Networks chassis slot specifications

Applications

• Legacy manufacturing floors that rely on Token Ring for real-time control systems
• Financial institutions maintaining secure, low-latency token ring networks
• Educational campuses with mixed Ethernet and Token Ring infrastructure
• Government and defense facilities requiring proven, deterministic network protocols
• Any environment where existing Token Ring devices need to be integrated with newer Extreme Networks switches and routers