Why use a managed switch on an OT network?
A managed network switch offers several advantages over an unmanaged switch, primarily in terms of control, performance, and security.
Here are some of the key benefits:
1. Enhanced Control and Customization:- VLANs (Virtual Local Area Networks): Managed switches support VLANs, allowing network segmentation for improved performance and security.
- Traffic Prioritization: Quality of Service (QoS) settings enable prioritization of certain types of traffic (e.g., VoIP, video conferencing) to ensure better performance for critical applications.
- Access Control Lists (ACLs): Managed switches can use ACLs to control which devices can connect to the network and what resources they can access.
- Port Security: Ability to lock down specific ports to prevent unauthorized devices from connecting.
- SNMP (Simple Network Management Protocol): Allows for network monitoring, performance tracking, and event notification.
- Port Mirroring: Enables monitoring of network traffic for troubleshooting and analysis.
- Link Aggregation: Combining multiple ports to increase bandwidth and provide redundancy.
- Advanced Routing: Some managed switches include Layer 3 routing capabilities, enabling more complex network topologies and traffic management.
- Spanning Tree Protocol (STP): Prevents network loops and ensures a redundant network path in case of a failure.
- Redundant Power Supplies: Some models offer dual power supplies for increased reliability.
- Bandwidth Management: Ability to control and allocate bandwidth to prevent network congestion.
- Traffic Shaping: Controls the flow of data to ensure optimal performance.
- Configuration and Updates: Managed switches can be configured and updated remotely, allowing for easier management of large networks.
- Centralized Management Tools: Often come with software that provides a centralized interface for managing multiple switches.
- Layer 2 and Layer 3 Features: Managed switches offer advanced features like static routing, dynamic routing (OSPF, RIP), and multicast routing.
- IPv6 Support: Future-proofing the network by supporting the latest internet protocols.
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