Fast Ethernet Consist Switch

On-board Ethernet Switch
Fast Ethernet Consist Switch image

The Fast Ethernet Consist Switch is a Fast/Gigabit Ethernet Layer 2 managed switch specifically designed for network applications in rolling-stock environments. Besides providing wire speed layer 2 forwarding, it supports also Layer 3 capabilities allowing IPv4 unicast and multicast routing among different VLANs. Its purpose is to enable the implementation of network topologies in a train. The Fast Ethernet Consist Switch provides advanced traffic switching capabilities, including support for VLANs, IGMP, Spanning Tree protocols (STP/RSTP) and the possibility to apply Quality of Service (QoS) policies. Layer 3 extensions include inter-VLAN routing with packet filtering together with NAT. OSPF and RIP dynamic protocols are also supported. Router redundancy can be provided through standard VRRP v2 protocol. The bypass feature makes the device completely transparent to the network in case of power loss or failure, thus avoiding or reducing the impact of possible local dropouts or malfunction on network performance. Available in different models, the Fast Ethernet Consist Switch supports 14 Fast Ethernet ports or 8 Fast Ethernet ports plus 6 Gigabit Ethernet ports ( up to 3 pairs with bypass function). The device is also available with Power-over-Ethernet (PoE) (on 8 ports). Thanks to PoE technology, the switch can provide power to connected Ethernet devices, simplifying design and implementation thereby easing network design constraints. Designed Conceived to operate in harsh environmental conditions typical of rolling-stock applications, the Consist Switch is fully EN 50155 compliant and provides the highest level of reliability and robustness required by the railway industry. Besides the standard features provided by this class of devices, the


Technical specifications


> Governing Standard EN 50155 Railway Applications (Electronic equipment used on rolling stock)

Approvals/Compliance (EMC)

> Electrical fast transient/burst immunity test IEC 61000-4-4 (2004-07)
> Electromagnetic compatibility rolling stock apparatus EN 50121-3-2:2016
> Electrostatic discharge immunity test IEC 61000-4-2 (2008-12)
> Radiated, radio-frequency, electromagnetic field immunity test IEC 61000-4-3 (2006-02)
> Surge immunity test IEC 61000-4-5 (2005-11)

Approvals/Compliance (Environment)

> Environmental testing - Part 2-1: Tests - Test A: Cold IEC 60068-2-1
> Environmental testing - Part 2-2: Tests - Test B: Dry heat IEC 60068-2-2
> Shock & Vibration EN 61373


> Operating temperature -25 ÷ +55 °C (+70 °C for 10 min. according to EN50155 class T1)
-25 ÷ +70 °C (+85 °C for 10 min. according to EN50155 class T3) [optional]
-40 ÷ +70 °C (+85 °C for 10 min. according to EN50155 class TX) [optional]
> Relative humidity (non condensing) up to 95%
> Storage temperature -40 ÷ +85 °C


> 4 output hardware queues for each port
> 802.1X port authentication
> Device bypass for maximum reliability
> DHCP option 82 handling
> Extended RMON counters
> Fallback firmware images for maximum reliability
> IEEE 802.3 layer 2 managed switch
> IEEE 802.3af PoE delivered on 8 ports
> IGMP versions 1, 2 and 3 snooping
> In-band (SSH) and out-of-band (console) CLI interface for device management
> In-band and out-of-band firmware upgrade
> Ingress rate limiting
> IPv4 protocol supported
> RADIUS authentication
> Simple Network Management Protocol (SNMP) v1/v2c/v3
> Train Topology and Configuration Management Protocol (TTCMP©) for automatic device management
> Up to 13 Fast Ethernet ports

Internetworking standards

> IEEE 802.1AB Link Layer Discovery Protocol (LLDP)
> IEEE 802.1D Spanning Tree Protocol
> IEEE 802.1Q Tagged VLANs
> IEEE 802.1w Rapid Spanning Tree
> IEEE 802.1X Port-based network access control
> IEEE 802.3ad Link Aggregation Protocol (LACP)
> IEEE 802.3af Power over Ethernet (PoE)
> IEEE 802.3u Fast Ethernet

IP services

> Integrated per-port DHCP server

Packet switching

> DSCP/802.1p Class of Service
> Link aggregation protocol (LACP 802.3ad)
> Link Layer Discovery Protocol (LLDP 802.1ab) with LLDP-MED extensions
> Spanning tree (STP 802.1D) and Rapid Spanning Tree (RSTP 802.1w)
> Strict priority or weighted (WRR) scheduler
> Up to 4096 802.1Q VLANs

Physical data

> Degree of protection IP 40
IP54, IP65 [optional]
> Fast Ethernet connectors M12, female, 4-ways, D-coding
> Maintenance ports connectors M12, female, 5-ways, A-coding
> Overall dimensions 207 x 184 x 51 mm (24 Vdc, without PoE)
207 x 184 x 73 mm (24 Vdc, with PoE)
207 x 184 x 73 mm (96/110 Vdc, with or without PoE)
> System status indicators 8 LEDs
> Weight 2,0 Kg (24 Vdc version)
2,5 Kg (96/110 Vdc version)

Power supply

> Max current 0,2 A @ 110 Vdc
0,6 A @ 24 Vdc
> PoE class 0, 1, 2, 3 and 4 (max 15 W per port), according to IEEE 802.3at Type-1
> PoE total power 60 W
> Power consumption 15 W (without PoE)
> Power supply class S2, according to EN-50155
> Power supply connector M12, male, 4-ways, A-coding
> Voltage range 14,4 ÷ 40 Vdc (24 Vdc nominal, insulated)
66 ÷ 165 Vdc (96/110 Vdc nominal, insulated)
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