OOBM Dongle Multiplexes Console and Management Traffic
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Solution Overview
Problem
Current out-of-band-management (OOBM) systems for managed switches are inefficient due to the need for separate networks for console and Ethernet traffic management, which can be cumbersome and require additional setup and management, especially since not all switches support Serial-Over-LAN (SOL) in hardware.
Innovation Solution
The implementation of an OOBM dongle and adapter system that multiplexes console and management traffic onto a single OOBM switch port, using a PoE capable OOBM port to consolidate management and console server traffic, eliminating the need for separate network setups and supporting switches without SOL hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two separate networks are used for console and Ethernet management traffic, then management functionality is provided, but system complexity and cabling requirements increase
Solution Approach 1:
The patent combines console and Ethernet management traffic into a single network by using IP routing to forward console traffic through the Ethernet network infrastructure. This merging eliminates the need for separate physical networks, reducing cabling complexity while maintaining both management functions through a unified network architecture.
Solution Approach 2:
The management port is designed to handle multiple functions - both direct Ethernet management traffic and routed console traffic - through a single physical interface. This multi-functionality allows the same port and network infrastructure to serve dual purposes, simplifying the overall system while providing comprehensive management capabilities.
2Adaptability or versatility
If Serial-Over-LAN (SOL) hardware is implemented in switches, then console access over Ethernet is enabled, but hardware cost and compatibility requirements increase
Solution Approach 1:
The patent introduces a network router as an intermediary device that performs the console traffic routing function. Instead of requiring SOL hardware in the switch, the router receives console traffic from the management port and forwards it to the appropriate destination, thereby achieving console access capability through software-based routing rather than specialized hardware.
Solution Approach 2:
The patent replaces the mechanical/SOL hardware approach with a software-based IP routing solution. Console traffic is handled through standard network protocols and routing tables rather than dedicated hardware circuits, reducing hardware complexity and improving compatibility across different switch models while maintaining the desired console access functionality.
3Reliability
If separate management networks are maintained, then dedicated console access is provided, but power consumption and cabling costs increase
Solution Approach 1:
The patent merges console and Ethernet traffic onto the same physical network infrastructure, eliminating redundant cabling and reducing the number of active network interfaces required. This consolidation maintains reliable console access through the unified network while reducing power consumption by eliminating duplicate network hardware and reducing overall network traffic volume.
Data Source
AI summary
A bidirectional out-of-band management (OOBM) dongle comprises a serial port for receiving console traffic from a console port of a managed switch and an Ethernet port for receiving management port traffic from a management port of the managed switch. In operation, the OOBM dongle multiplexes, via an optional adapter, the console traffic and the management port traffic and generates Ethernet traffic that is then communicated, via an OOBM port on the dongle, to an OOBM switch port of an OOBM switch that acts as a power sourcing device for the OOBM dongle.