SNMP Manager Switching for Network Control Redundancy
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Solution Overview
Problem
Current SNMP-based network management systems for military ships are vulnerable to loss of control when a physical matrix is switched off or experiences anomalies, leading to compromised control of interconnected audio matrices.
Innovation Solution
A control module dynamically selects a priority SNMP manager based on the state and availability of agents, ensuring redundancy and failover to maintain communication with network equipment, even if primary connections fail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single SNMP manager is used to control network equipment, then the system structure is simple, but the system becomes vulnerable to loss of control when the manager or agent fails
Solution Approach 1:
The system pre-configures multiple SNMP managers with defined priorities and establishes redundant communication channels before failures occur. When a failure is detected, the system can immediately switch to the next available manager without interruption, as the failover mechanism is already in place and tested.
Solution Approach 2:
The invention introduces redundancy by configuring backup SNMP managers that stand ready to take over control functions. This cushioning against failures ensures that if the primary manager or agent fails, the system continues operating through the backup managers, preventing complete loss of control.
2Reliability
If redundant SNMP managers are configured to ensure continuous control, then reliability improves, but the complexity of managing multiple managers increases
Solution Approach 1:
The system implements automatic failover where the SNMP managers autonomously detect failures and switch control without human intervention. The monitoring agent continuously checks the operational status of managers and agents, and the switching mechanism automatically activates the backup manager when failures are detected, eliminating the need for manual management of redundancy.
Solution Approach 2:
The system employs continuous monitoring where agents report their operational status to managers, and managers monitor agent availability. This feedback loop enables automatic detection of failures and triggers the failover process, allowing the system to self-manage the complexity of redundancy through real-time status information.
3Reliability
If the system switches between SNMP managers upon failure, then control continuity is maintained, but the time required for switching increases
Solution Approach 1:
The system pre-establishes priority rankings and communication channels for multiple SNMP managers before failures occur. The backup managers are pre-configured and ready to assume control immediately, eliminating the need for discovery or configuration time during failover events.
Solution Approach 2:
The invention replaces manual failover procedures with automated switching mechanisms that use predefined protocols and priority structures. This substitution of mechanical manual intervention with automated system-based switching reduces the time required for failover by eliminating human response delays.
Data Source
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AI summary
There is described a system for managing and supervising networked equipment according to an SNMP protocol, comprising: - plurality of management agents, each of which is associated with a corresponding network equipment item (M1-M5) belonging to a community and arranged to carry out management decisions in the context of the associated equipment (M1-M5); - plurality of MIB databases, each of which is associated with a respective managed equipment item (M1-M5) and includes a set of state data for the equipment item, which MIB databases are accessible to the agent operating on the monitored equipment item; and - a plurality of manager modules (MAN1-MAN5) adapted to take management decisions under the control of an operator, each of which is arranged to access a MIB database of a respective managed equipment item (M1-M5) in order to send requests and/or to receive notifications, characterized in that it includes a module (SCSM) for controlling the switching between managers (MAN1-MAN5) of equipment items which are linked in a logical community (MGL) in order to manage a workload distributed over several equipment items (M1-M5), in which the MIB databases of every management agent for the equipment items (M1-M5) are aligned in content, which module is arranged to define a manager-agent management connection for managing all the equipment items (M1-M5) of the logical community (MGL), and in that the switching control module (SCSM) is adapted to receive commands from an operator and is arranged to dynamically select one of the plurality of managers (MAN1- MAN5) available depending on the state of the monitored equipment (M1-M5) and on the associated agent and based on a pre-established order of priority among managers (MAN1- MAN5).