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Industrial Managed Switches: Function Overview
Administration and diagnostics, availability, security, data transfer and performance: An overview of all functions of the industrial managed switch
Administration and Diagnostics
Simplified Commissioning and Maintenance
Configuration and Diagnostics
Several Options:
- Configuration via Web-Based Management
- Configuration via command line (SSH, Telnet, RS-232)
- Network management via SNMP v1, v2, v3
- Support of MIB standards (Management Information Base)
- Diagnostics via Modbus TCP: Numerous information available for easy diagnostics via MODBUS
DDM (Digital Diagnostic Monitoring)
- Automatically detects a connected SFP module
- Detailed module information
- Real-time monitoring
- Temperature
- Power supply
- Transmission power
- Reception power
Monitoring and Diagnostics
Simplified Maintenance:
- Port mirroring: Mirroring the network traffic
- LLDP: Automatic detection of adjacent devices
- Email notifications
Availability
Via communication redundancy
Jet Ring
- Typical switching time < 300 ms (depends on the application)
- Extremely easy configuration
- Up to 20 participants (fast aging) in a jet ring
Xpress Ring and Dual Ring
Xpress Ring:
- Switching time < 20 ms
- Easy configuration
- Up to 200 switches in one Xpress ring
- Two Xpress rings per switch
Dual Ring:
- Combination of both redundancy types
- 1 jet ring and 1 Xpress ring per switch or 2 Xpress rings per switch
ERPS (ETHERNET Ring Protection Switching)
The Fast and Open Solution:
- Standardized and open technology
- Switching time < 50 ms
- Nested topologies with up to six rings per switch
- Realization of a one-fault tolerance (SPOF – Single Point of Failure)
ERPS – Enhancement Mode:
- WAGO's devices with integrated switches and fast aging configuration
- Typical switching time < 300 ms (depends on the application)
Security
Absolutely Secure Industrial Networks
IEEE 802.1X Authentication
The Security Standard of IT Networks: Secure authentication and authorization in ETHERNET networks (locally on the switch or via RADIUS server).
Process:
- Authentication of a subscriber is performed by the authenticator.
- The authenticator checks the authentication information of the subscriber (supplicant) with an authentication server.
Firewall – Access Control List
Authorization only for the required services
Filtering data packets due to:
- a source MAC or source IP address
- a destination MAC or destination IP address
- a range of MAC or IP addresses
- UDP/TCP source or destination ports
Port Security
- Dynamically learns MAC addresses per port
- Limitation of MAC addresses per port
- MAC-based white/black list per port
Data Transmission
Streamlined ETHERNET Networks
Logical Network Disconnection
VLAN (e.g., per IEEE 802.1Q)
Segmentation in logical, virtual networks:
- Broadcast limitation
- Security improvement
- Data flow prioritization
- Subdivision of machines and office networks, for example
IP-Based VLAN
- Routing of data packets between VLANs via IP address
- Communication from one participant to two or more VLANs
- Economic connection of networks to higher-level routers
- Prioritization of data packets via IP address
MAC-Based VLAN
- Assignment of data packets to a VLAN via MAC address
- Prioritization of data packets via MAC address
Performance
Streamlined ETHERNET Networks
Network Optimization
LACP link aggregation
Merge multiple data connections into a single logical link:
- Increase transmission rate
- Link redundancy
Traffic Prioritization and Limitation
- Faster transfer of important data packets through the switch
- Prioritization of data packets per IEEE 802.1 Q
- Limitation of the bandwidth or number of packets per unit of time per port
- Increase in data transmission quality
Mastering Data Traffic
- Stopping broadcast storms
- Ensuring network availability
- Limitating broadcast and multicast data flows (packets/time)
