Westermo Viper-20A Series Managed Gbps Routing Switch

The Viper-20A series comprises Managed Routing Switches with 20 ports, optimized for the requirements of railway vehicles. It offers Gbps ports for devices with high bandwidth needs, such as Access Points and NVRs (Network Video Recorders).

Thanks to its construction, the Viper-20A series is ideal for the harsh environmental conditions in trains, where the switch is constantly exposed to vibrations, extreme temperatures, humidity, and a demanding electrical environment.

A GORE-TEX® membrane protects against internal condensation. Threads in the housing provide additional vibration resistance. The high isolation between all interfaces allows direct connection to the vehicle's auxiliary power supply and protects against overvoltage and flashover. IP67 protection prevents the ingress of water and dust. An all-around optimized design ensures an extremely compact housing combined with a very high MTBF for easy integration and low lifecycle costs.

Thorough type testing by independent ISO/IEC 17025 test institutes and the ILAC MRA laboratory confirm compliance with a variety of standards such as EN50155. Westermo products achieve the highest class in all aspects. In modern Westermo production facilities, the quality of each device is ensured, among other things, by burn-in tests with temperature cycles.

The WeOS operating system offers a comprehensive range of IP network functions for reliable and flexible networks, such as the FRNT ring protocol with extremely fast failover. The powerful Layer 3 routing function is ideal for segmenting networks in complex applications. The optional backup device is no less robust than the Viper and offers easy configuration, updating, and backup.

As the Viper-20A series meets the requirements for railway vehicles, the device is also suitable for use in other applications under severe operating conditions and in harsh environments, such as in mining.

Key Features:

• Compact routing switch with 20 ports, approved for railway vehicles
• 20x100 Mbps or 4x1 Gbps + 16x100 Mbps
• One model for 24-110 VDC (±30%) voltage range
• Developed and constructed for extreme operating conditions
• Design for particularly high robustness
• Comprehensive approvals from IEC/ISO 17025 certified test laboratories
• Quality-oriented development and production in Sweden
• Operates with WeOS, Westermo's proven network operating system
• Powerful protocols and functions, including Layer 3 Routing, DHCP (Server and Client) and VRRP
• High cybersecurity
• User-friendly

Specifications - Viper-20A Series

Technical Data

• Dimensions (W x H x D): 178 x 160 x 61 mm
• Weight: 1.7 kg
• Housing: Full metal housing
• Nominal voltage: 24 to 110 VDC
• Operating voltage: 16.8 to 143 VDC (14.4 VDC for 100 ms and 154 VDC for 1 s)
• Current interruption: Class S2 (10 ms bridging)
• Operating temperature: -40 to +70°C (+85°C for a limited period)
• Storage & Transport temperature: -55 to +85 °C
• Ingress protection: IP67
• Humidity (operation): 5-95% relative humidity, operation, storage, and transport
• Altitude: 2000 m / 80 kPa

Nominal current

• Max. at 24 VDC: 670 mA
• Max. at 110 VDC: 160 mA

Interface

• Ethernet 1 Gbps (X-coded): 20
• Ethernet 100 Mbps (D-coded): 4
• Backup and Restore port: 16
• Console port (RS-232, B-coded): 1

MTBF

• MIL-HDBK-217F2: 530,000 h (Viper-x20A), 522,000 h (Viper-x20A-T4G)

Approvals/Compliance

• Climatic: EN 50155 Class OT4 / IEC 60571 Class TX, railway applications - Electronic equipment of railway vehicles; IEEE 1478 Class 1, Condition E3 (incl. salt mist), environmental conditions for electronic equipment in railway vehicles
• EMC: EN/IEC 61000-6-2, Immunity for industrial areas; EN/IEC 61000-6-4, Emission for industrial areas; EN 50121-4/IEC 62236-4, Railway applications - Signal and telecommunication equipment; EN 50121-3-2/IEC 62236-3-2 Railway applications - Rolling stock - Equipment; Tested and verified according to Class S1, DB EMC Regulation 06, Working Group Radio Compatibility in the VDB Version 1.0 (railway radio services); Tested and verified for FCC Part 15b Class A (CFR 47); E-mark, road vehicles, E1 10R-058942
• Mechanical (Shock and Vibration): EN 61373 Category 1, Class A; EN 60068-2-27 20 g, 11 ms and 100 g, 6 ms
• Insulation (Coordination and Test): EN 50124-1, Railway applications - Insulation coordination; EN 50155/IEC 60571, Railway applications - Electronic equipment of railway vehicles
• Fire Protection: EN 45545-2, Fire protection in railway vehicles; NFPA 130, Fire protection guideline for track crossings and passenger transport systems
• Software: EN 50657:2017 Software on railway vehicles (basic integrity); EN/IEC/UL 61010-1, -2-201, Safety regulations for electrical measurement, control, and laboratory equipment

Software

• WeOS: https://www.westermo.com/solutions/weos
• WeConfig: https://www.westermo.com/solutions/weconfig

Warranty

• Validity: 5 years

Part Numbers

• 3635-0910: Viper-120A (Layer 2)
• 3635-1210: Viper-120A-T4G (Layer 2)
• 3635-0920: Viper-220A (Layer 3)
• 3635-1220: Viper-220A-T4G (Layer 3)

Accessories

• 3641-0190: M12 USB Configuration Backup Device
• 3641-7190: M12 USB Configuration Backup Device with mounting strap
• 3146-11xx: Patch and power cables, see www.westermo.com
• 1211-4073: Console cable

WeConfig

• https://www.westermo.com/products/software/weconfig

WeOS 4: Specification

The WeOS operating system was developed by Westermo for the current and future range of Ethernet hardware products. This Layer 2 and Layer 3 switching solution enables Westermo to create complex multimedia ring networks and routing solutions. WeOS not only provides solutions for many demanding industrial network problems but also contributes to investment protection by ensuring the future availability of fully compatible solutions. WeOS is the core of our latest range of Ethernet hardware products, with which complex multimedia ring networks and routing solutions can be realized.

Westermo has many years of experience in developing products for industrial applications. The focus of all Westermo network solutions is the need for ease of use. By standardizing on a single operating system for all Westermo Ethernet products, the installation, operation, and maintenance of individual devices and complete networks are simplified. Once a user is familiar with a Westermo product, they can apply this knowledge to all our other devices. A web screen simplifies the configuration of many functions, while a command-line interface (CLI) allows for fine-tuning.

WeOS has unique features that enable Westermo's solutions to integrate serial devices easily. WeOS enables Westermo to offer a range of unique network security solutions with elements such as a Stateful Inspection Firewall and the IEEE 802.1X standard. Secure remote access can be achieved with encrypted VPN tunnels. Setting up these functions is described in the WeOS Management Guide, 6101-3201.

WeOS Standard - Layer 2 Protocols and Functionality

Reliability and High Availability

• FRNTv0/v2 flexible ring topologies (Multiring, Subrings and Ring Coupling), Multilink Dual-Homing, IEC 62439-2 Media Redundancy Protocol (MRP)a., IEEE 802.1AX/802.3ad Link Aggregation (LACP and static), IEEE 802.1D Spanning Tree Protocol (STP) and IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)

Layer-2-Switching

• IEEE 802.1Q Static VLAN and VLAN Tagging, VLAN Q-in-Q Tunneling, VLAN Transparency, IEEE 802.3x Flow Control, IGMPv2/v3 Snooping, AVT Dynamic VLAN (Adaptive VLAN Trunking), Management VLAN (Management Interface Concept), Static Multicast MAC Filter, IEEE 802.1AB Link Layer Discovery Protocol (LLDP)

Layer 2 QoS

• IEEE 802.1p Class of Service, Ingress/Egress Throughput Rate Limiting, Egress/Ingress Traffic Shaping

Layer-2-Security

• IEEE 802.1X Port Access Control, MAC Authentication, IP/MAC Address Conflict Detection, Automatic Port Deactivation

Management

• WeConfig, Web interface (HTTP and HTTPS), Command Line Interface (CLI) via console port, (SSHv2 and Telnet), local and central user authentication (RADIUS and TACACS+), SNMPv1/v2c/v3. Secure Copy (SCP), USB configuration and backupb., BOOTP Client, flexible alarm/event handling system, Syslog (log files on RAM/USB and remote syslog server), Digital I/O, permanent port monitoring, NTPv4 Client/Server), DHCP Client (with options 60 and 61), DHCP Server (with options 1, 3, 6, 7, 12, 15, 42, 61, 66, 67, 82, 121 and 249), DHCP Relay Agent (with options 54 and 82), DDNS

SNMP MIB Support

• RFC1213 MIB-2, RFC 2819 RMON MIB, RFC 2863 Interface MIB, RFC 3411 SNMP Framework MIB, RFC 3433 Entity Sensor MIB, RFC 3635 Ethernet-like MIB, RFC 4133 Entity MIB, RFC4188 Bridge MIB, RFC4318 RSTP MIB, RFC4363 Q-BRIDGE MIB, RFC4836 MAU MIB, IEEE 802.1AB LLDP MIB, IEEE 802.1AX LAG MIB, IEC 62439-2, MRPa., UCD SNMP MIB, WESTERMO-WEOS MIB, WESTERMO-FRNT MIB, WESTERMO-INTERFACE MIB

WeOS Extended - Layer-3 Protocols and Functionality a.

IP Routing, Cyber-Security and VPN

• Static IP Routing, Static Floating Routes, Dynamic IP Routing (OSPFv2, RIPv1/v2), VRRPv2/v3, Static Multicast Routing, Stateful Inspection Firewall, Modbus Firewall (DPI), NAT, 1-1 NAT, Proxy ARP for 1-1 NAT, Port Forwarding, DSCP/TOS Modification, IPsec VPN (IKEv1 Certificates and PSK, ESP, VPN Failover), SSL VPN (Client and Server, local and central authentication with RADIUS, Address Pool and Address per CN, TLS Authentication, WeConnect), GRE, Multinetting

SNMP MIB Support

• RFC 2787 VRRPv2 MIB, RFC 6527 VRRPv3 MIB