Application Overview
Centralized Traffic Control (CTC) railway signaling consoliates train routing decisions and is centrally managed by a remote dispatch which controls interlocking and traffic flows. Network management requires Ethernet system design, maintenance and control of the local network security, remediation of faulty equipment, maintaining appropriate quality standards and ruggedization to operate in harsh conditions.
Key Considerations
Key Volktek Benefits
| Feature | Benefit | ||
| Reliability | Redundant Power | Remains On During Power Failure |
1) Built-in surge protection, dual power sources, and battery back-up 2) Ensure stable device operations for 24/7 network reliability. |
| Availability | Link Redundancy | Fast Network Recovery |
1) Rapidly react to physical link failure and recover immediately 2) Provide an alternate pathy link to support continuous transmission. |
| Performance | Quality of Service (QoS) | Define the Critical Networks | Networks typically operate on a best-effort delivery basis, which means that all traffic transmitting from ports has equal priority and chance of being delivered in a timely manner. When congestion occurs, the same traffic has an equal chance of being dropped. When configuring the QoS feature, specific networks can be prioritized, optimizing the network performance and bandwidth utilization. |
| Security | 802.1x RADIUS / TACACS+ | Secure the Network by Authenticating the Users | Allows the network administrator to specify a whitelist of allowed MAC addresses, allowing only those devices to connect to the network. It also limits the number of devices connected to a single downlink port known as Dynamic Assignment. |
| Security | e-mail Alarm | Triggered Events Alert Via Email |
1) Notify the administrator if real-time problems occur such as firmware or configuration changes, device status, link connectivity status, etc. 2) Help administrators to quickly identify, isolate and resolve network issues. |
| Management | Link Layer Discovery Protocol (LLDP) | Access Device and Network Information | Managed switches provide management of SNMP traps or alert messages sent from a remote SNMP-enabled device to a center SNMP server. |
| Management | PoE ON / OFF + PD Alive Check | Intelligent PoE+ for Powered Devices | PoE switches can enable or disable the power supply to the powered devices. The powered ports can send keep-alive checking packets to the devices to increase system reliability. |
Application Diagram
