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Lynx+ Managed Switches from Westermo

Solutions Lynx Legacy Comparison
   
A switch is a device used to construct Ethernet networks and control the data flow and bandwidth of the network. A switch stores incoming packets and then tests the packet for check sum errors, if an error is found the packet is discarded. After that a decision is made as to which port or ports the packet should be forwarded to.This decision is made based on tables of Media Access Control (MAC) addresses. All MAC tables are created and maintained automatically from the received packets.When the switch receives a packet on a port it stores the source MAC address in the MAC table that corresponds to that port. If a node is silent for a long time the MAC address will “age out” and be removed from the table. A switch can operate in full duplex mode, this ensures that an Ethernet controller will never see any collisions occurring when operated in such a manner.

A switch can be either managed or unmanaged, an unmanaged switch can not be reconfigured using external software tools. A managed switch allows access to its functions to allow it to be reconfigured or monitored.This management can be inband- using protocols on the network or outband via a local management port or fault contacts.A managed switch often uses SNMP (Simple Network Management Protocol) for inband management. SNMP is the Internet standard protocol developed to manage nodes (servers, workstations, routers, switches and hubs etc.) on an IP network. SNMP enables network administrators to manage network performance, find and solve network problems, and plan for network growth.

Lynx+ has become a router through its new operating system, WeOS. Both static and dynamic routing is possible and protocols such as OSPFv2 and RIPv1/v2 are supported. We have also implemented further functions that are necessary when you expand your network to the WAN side. Network redundancy on a routing level with VRRP, firewall, NAT, port forwarding and IPSec-encrypted VPNs are just some of the features we have added.

There is also a variety of Layer 2 features such as network redundancy protocols with support for STP/RSTP that can be combined with our own FRNT protocol meaning that the Lynx+ can easily be integrated into networks with equipment from other players. IGMPv2/v3 with stop filter and the unique Westermo protocol ‘Fast Reconnect’ allow i.e. a video stream to reconfigure super fast (20ms). Advanced functionality for VLANs with support for up to 64 virtual network, combined with Layer 3 protocols allows unprecedented levels of network security.

The standard Lynx range of managed Ethernet switches and device servers provides fast Ethernet, serial RS-232 / RS-485 and gigabit fibre support, VLAN and IGMP functions. The layer 3 variants also provide a stateful inspection firewall, static and dynamic IP routing and IPsec VPN support for more advanced networks. The whole Lynx range has DNV approval for marineuse and meets railway trackside standards.

The standard Lynx can have up to eight Fast Ethernet ports and two SFP ports which support gigabit speeds and a variety of SFP transceivers which makes it possible to mix and match any fibre types, distances and transmission speeds. The Lynx DSS delivers enhanced serial to Ethernet connectivity, and support for dual serial networks, modem replacement functionality, and Modbus gateways. Legacy devices can be connected via two serial ports. One of these is configured for RS-232 and the other for either RS-232 or RS-422/485.

The Lynx supports a range of layer 2 switching functions that provide resilient, rapid recovering redundant ring Ethernet networks. In addition to these functions some Lynx models also provides additional layer 3 networking functionality including routing, firewalls and VPN remote access.

With the increasing number of cyber attacks, advanced security is now critical for industrial networks. Remote, secure access to a network is provided using encrypted VPNs and a multi-port DMZ (demilitarized zone or subnet that is exposed to the Internet) can be constructed using the internal per port firewall function. These functions support users wanting to communicate over potentially insecure networks and also help to prevent users inadvertently connecting to the wrong network.

The Lynx is the most compact and energy efficient switch of its type on the market.  With a footprint size of only 100mm x 52mm, the unit is easy to incorporate into machines and existing applications. A wide operating power range of 19-60V DC further increases the number of suitable applications. The low power requirement of just 250 mA at 24V DC, results in a reduction in running cost over the life of the unit and helps companies reduce their power usage.

Suitable for deployment in extreme operating conditions, the Lynx is type-tested to meet industrial EMC, isolation, vibration and shock standards, and approved for use in relevant industrial applications, including Cenelec EN 50121-4 certification for railway trackside installations. The Lynx has a wide operating temperature range from -40 to 70 C. There is no fan or other moving parts, and the industrial grade components and a full metal IP40 enclosure – with no cooling holes that would allow the ingress of dust – contribute to the extremely high mean time between failures (MTBF) of over 500,000 hours, resulting in long trouble-free service life.

The Lynx is designed to achieve the highest Mean Time Between Failure (MTBF) figures in the industry. To do this we select the highest quality components with the highest reliabilities. We also try our best to avoid electrolytic capacitors, relays, fans and batteries which typically reduce MTBF the most. Because of this we can be confident of extremely low failure rates over the service life: Typical customers install Westermo products in unmanned and critical locations where maintenance costs will be high. Because of our high MTBFs our service life will be long: Many applications Westermo products are used in will be expected to run for many years.

MTBF is often one of the deciding factors whether a product is suitable for an application or not. If the variables and assumptions behind the numbers are based on vague or misleading MTBF calculations, bad decisions are inevitable. Westermo perform MTBF calculations according to the military standard MIL-HDBK-217K. We think  is most suitable standard for calculating reliability predictions of products used in industrial environments. Westermo will always provide appropriate MTBF information upon request.

Applications that operate in environments with extreme temperatures require products that are not only capable of coping with cold and heat, but also resist dust and debris that may enter the product. All Lynx units have the same wide temperature specification (-40 to 70 C) and a sealed IP 40 rated metal housing. Lynx is the only switch on the market that combines these two qualities. Their design has undergone rigorous temperature testing by a third-party test house and every unit is tested in our own state of the art test laboratory before it leaves the factory. The Lynx is designed to meet industrial EMC, isolation, vibration and shock standards, and approved for use in relevant industrial applications.

 
Comparison - 10 port with 2 SFP ports - Layer 2 Ethernet
 
The field of Industrial Ethernet Switches is extremely competitive. However, not all switches are created equal. Westermo is known for their robust industrial products. They are also known as a leader in providing features and functionality beyond its competitors. ESI has provided a brief example in the following presentation of similar products.

Not all competitors provide the same configuration that we are comparing. In order to provide a consistent comparison, we have provided our competitor's unit with the closest configuration in relation to the Lynx L110-F2G.

 
 
Manufacturer Westermo Moxa Hirschmann Sixnet B&B Electronics Ethernet Direct N-Tron
Model L110-F2G EDS-508A-T RS20-0800-T1T1SDAE SLX-10MG-1 EIR610-3SFP-T HME-623E 709FX
Standard Ports 8 8 8 10 7 6 8
SFP Slots 2 0 0 0 3 2 1
Total Ports 10 8 8 10 10 8 9
List Price $1,021.00 $979.00 $1,069.00 $1294.00 $1,099.00 $1,095.00 $1,080.00
Need Layer 3 Ethernet? We offer the LYNX L210...see below
Solutions
Solutions
Problem: Repeated IP addresses across network Solution: NAT/port forwarding
   
In some applications, the same IP addresses are sometimes reused for each island of equipment. This is typical for Wind turbines or solar panels where the equipment is pre-configured and delivered to site as a stand alone unit.  In large installations, a SCADA system is used to manage the individual islands, but this is a problem as all the devices in each island have the same IP address.
WeOS can overcome this issue using NAPT or NAT port forwarding rules.  Using the integrated firewall in WeOS, rules can be created to translate an IP address and port numbers on the SCADA network to an IP address and port number on the Wind turbine network.

Also available in Red Fox, Viper and Wolverine products through WeOS operating system

   
Problem: Sensitive data passing through untrusted networks Solution: Encrypted Ipsec VPN tunnel
   
Many applications within the utility sector extend over large geographical areas where the possibility of management and monitoring from a remote location can be crucial. All WeOS products are equipped with VPN functionality, which means that network resources can be provided in a secure manner over un-trusted networks like the Internet.
VPN can also be used to connect different remote networks with each other. Networks connected with VPN tunnels function exactly like one joined network, even though they can be physically located at any location. WeOS allows for up to 25 IPSec encrypted VPN tunnels to be created.

Also available in Red Fox, Viper and Wolverine products through WeOS operating system

   
Problem: Use IP to replace legacy enterprise network Solution: Layer 3 Dynamic Routing
 
In railway signalling, two different migrations take place at the same time. Apart from the migration from legacy IIP systems, Ethernet systems now also have the capability to replace large parts of existing SDH systems ( Synchronous Digital Hierarchy). In case of an increased density of trackside equipment, no additional SDH nodes are needed since Industrial Ethernet equipment is able to offer the needed availability, using either layer 2 redundancy and/or layer 3 static or dynamic routing. Whichever need you have, from simple 25 year-old FSK serial technology up to complex routing across different media, Westermo has it all to support you in offering a complete solution for complex and demanding environments.

Also available in Red Fox, Viper and Wolverine products through WeOS operating system

   
Problem: Breaks in multicast data streams during ring recovery Solution: IGMP Snooping
   
Long distance transmission of IP Video over existing backbone systems makes it possible to selectively monitor trackside cameras without draining the system’s bandwidth when cameras are not monitored.
In the same way, it is possible to ‘broadcast’ a single stream over the network and make it available to an unlimited amount of users, using only the single stream to each network node. With the implementation of IGMP Snooping and redundancy protocols supported in WeOS, Westermo is able to offer a IP CCTV and IP Broadcasting solution based on any kind of media.
Whether it is copper, fibre, or inter-station transmission over SDH (Synchronous Digital Hierarchy) backbones, WeOS offers all the protocols needed to build and manage the network solution.

Also available in Red Fox, Viper and Wolverine products through WeOS operating system

   
Problem: Managing networks securely Solution: SSH, HTTPS and SNMP V.3
   
As our networks grow, it becomes more important that they can be managed and monitored easily, but also with a high degree of security. Managing networks over  insecure un-encrypted links, even on the local LAN is no-longer acceptable.
Products running WeOS can be configured through a secure user-friendly web interface or through an industry standard CLI interface. Regardless of how you configure your network devices, all management information will be SSL encrypted.
The industry standard SNMP (v2c and v3) and Syslog protocols are supported within WeOS to provide status information on the health of the network.

Also available in Red Fox, Viper and Wolverine products through WeOS operating system

   
Problem: Resilient enterprise level network Solution: OSPF and VRRP
   
Features for increased availability and security through layer 3 routing are crucial for the next generation of industrial control networks. For this reason, we have implemented the most widely used routing protocols in industrial networks into our software platform. OSFP (Open Shortest Path First) in combination with VRRP (Virtual Router Redundancy Protocol) allow you to build redundant network topologies such as ring, star, mesh or any network type at any time.
For control networks in the water and wastewater sector, this may be particularly important as these systems are often built to control and monitor critical processes.
An improved network availability and security lessens any negative impact on the environment through enhanced management and asset visibility. The lifetime of assets can be extended due to better maintenance and management.  These are just some of the benefits that can be achieved.

Also available in Red Fox, Viper and Wolverine products through WeOS operating system

LYNX Legacy Products
LYNX Legacy Products

Lynx Legacy Products include the following:
  • LYNX100
  • LYNX400
  • LYNX1100
  • LYNX1400
Westermo has issued an end of life notice for the above legacy products.
The new Lynx 110 is being offered as replacement.
If you have a model listed below, that you are currently using and in need of additional systems:
Contact ESI for assistance - Contact ESI
   
Part Number Description
L106 6 x 10/100 Base TX Ethernet
L107F1-MM-LC2 6 x 10/100 Base TX Ethernet, 1 100 Base FX Fiber, Multimode, up to 2km
L107F1-SM-LC20 6 x 10/100 Base TX Ethernet, 1 100 Base FX Fiber, Singlemode, up to 20km
L107F1-SM-LC40 6 x 10/100 Base TX Ethernet, 1 100 Base FX Fiber, Singlemode, up to 40km
L107F1-SM-LC80 6 x 10/100 Base TX Ethernet, 1 100 Base FX Fiber, Singlemode, up to 80km
L107F1-SM-LC120 6 x 10/100 Base TX Ethernet, 1 100 Base FX Fiber, Singlemode, up to 120km
L108F2-MM-LC2 6 x 10/100 Base TX Ethernet, 2 100 Base FX Fiber, Multimode, up to 2km
L108F2-SM-LC20 6 x 10/100 Base TX Ethernet, 2 100 Base FX Fiber, Singlemode, up to 20km
L108F2-SM-LC120 6 x 10/100 Base TX Ethernet, 2 100 Base FX Fiber, Singlemode, up to 120km
Industrial models listed - also available in Marine, Rail and Substation certifications - Contact ESI for pricing.
Part Number Description
L1107F1-MM-LC2 6 x 10/100 Base TX Ethernet, 1 1000 Base FX Fiber, Multimode, up to 2km
L1107F1-SM-LC10 6 x 10/100 Base TX Ethernet, 1 1000 Base FX Fiber, Singlemode, up to 10km
L1108F2-MM-LC2 6 x 10/100 Base TX Ethernet, 2 1000 Base FX Fiber, Multimode, up to 2km
L1108F2-SM-LC10 6 x 10/100 Base TX Ethernet, 2 1000 Base FX Fiber, Singlemode, up to 10km
Industrial models listed - also available in Marine, Rail and Substation certifications - Contact ESI for pricing.
Part Number Description
L406 6 x 10/100 Base TX Ethernet
L407F1-MM-LC2 6 x 10/100 Base TX Ethernet, 1 100 Base FX Fiber, Multimode, up to 2km
L407F1-SM-LC20 6 x 10/100 Base TX Ethernet, 1 100 Base FX Fiber, Singlemode, up to 20km
L407F1-SM-LC40 6 x 10/100 Base TX Ethernet, 1 100 Base FX Fiber, Singlemode, up to 40km
L407F1-SM-LC80 6 x 10/100 Base TX Ethernet, 1 100 Base FX Fiber, Singlemode, up to 80km
L408F2-MM-LC2 6 x 10/100 Base TX Ethernet, 2 100 Base FX Fiber, Multimode, up to 2km
L408F2-SM-LC20 6 x 10/100 Base TX Ethernet, 2 100 Base FX Fiber, Singlemode, up to 20km
L408F2-SM-LC40 6 x 10/100 Base TX Ethernet, 2 100 Base FX Fiber, Singlemode, up to 40km
L408F2-SM-LC80 6 x 10/100 Base TX Ethernet, 2 100 Base FX Fiber, Singlemode, up to 80km
L408F2-SM-LC120 6 x 10/100 Base TX Ethernet, 2 100 Base FX Fiber, Singlemode, up to 120km
Industrial models listed - also available in Marine, Rail and Substation certifications - Contact ESI for pricing.
Part Number Description
L1407F1-SM-LC10 6 x 10/100 Base TX Ethernet, 1 1000 Base FX Fiber, Singlemode, up to 10km
L1408F2-MM-LC2 6 x 10/100 Base TX Ethernet, 2 1000 Base FX Fiber, Multimode, up to 2km
L1408F2-SM-LC10 6 x 10/100 Base TX Ethernet, 2 1000 Base FX Fiber, Singlemode, up to 10km
L1408F2-SM-LC50 6 x 10/100 Base TX Ethernet, 2 1000 Base FX Fiber, Singlemode, up to 50km
L1408F2-SM-LC70 6 x 10/100 Base TX Ethernet, 2 1000 Base FX Fiber, Singlemode, up to 70km
Industrial models listed - also available in Marine, Rail and Substation certifications - Contact ESI for pricing.
   

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