Introduction

Introduction to Industrial Managed Switches

Welotec’s RSAGS (Rugged Substation Automation Gigabit Switch) series are product lines of powerful industrial managed switch which are referred to as Open Systems Interconnection (OSI) Layer2 bridging devices. Unlike an “unmanaged” switch, which is normally found in homes or in Small Office/Home Office (SOHO) environments and runs in “auto negotiation” mode, each port on a “managed switch” can be configured for its link bandwidth, priority, security, and duplex settings. The managed switches can be managed by Simple Network Management Protocol (SNMP) software, web browsers, Telnet, or serial console. Since every single port can be configured to specific settings, network administrators can better control the network and maximize network functionality.

Welotec’s managed switch is also an industrial switch and not a commercial switch. A commercial switch simply works in a comfortable office environment. However, an industrial switch is designed to perform in harsh industrial environments, i.e., extreme temperature, high humidity, dusty air, potential high impact, or the presence of potentially high static charges. Welotec’s managed switch works fine even in these environments.

Welotec’s managed switch is designed to provide faster, secure, and more stable network. Advantages that make it a powerful switch are that it supports security such as IP Source Guard, DHCP Snooping, ARP Spoof Prevention and ARP Spoof Prevention as well as Access Control List (ACL) and network redundancy protocols/technologies such as Ethernet Ring Protection Switching (ERPS), iA-Ring, Rapid Spanning Tree Protocol (RSTP), Multiple Spanning Tree Protocol (MSTP), and Media Redundancy Protocol (MRP). These protocols provide better network reliability and decrease recovery time down to less than 20 ms.

Welotec’s managed switch supports a wide range of IEEE standard protocols. This switch is excellent for keeping systems running smoothly, reliable for preventing system damage or losses, and friendly to all levels of users. The goal of this innovative product is to bring users an enhanced network management experience.

Note: Throughout the manual, the symbol * indicates that more detailed information of the subject will be provided at the end of this manual or as a footnote.

Software Features

Welotec’s industrial Layer-2 Managed switches come with a wide range of network protocols and software features. These protocols and software features allow the network administrator to implement security and reliability into their network. These features enable Welotec’s switches to be used in safety applications, and factory and process automation. The followings are the list of protocols and software features.

• User Interface; Web browser; Telnet Console; Serial Console

• Dynamic Host Configuration Portocol (DHCP) Server/Relay/Client with Option 66/67

• Time Synchronization

  • Network Time Protocol (NTP) Server/Client

  • Simplified Network Time Protocol (SNTP)

  • IEEE 1588 Precision Clock Synchronization Protocol (PTP) v2 hw-E2E TC and sw-Boundary Clock

• Port Mirroring

• Quality of Service (QoS) Traffic Regulation

• Link Aggregation Control Protocol (LACP)

• Medium Access Control (MAC) Filter

• Generic Attribute Registration Protocol (GARP)/ GARP Multicast Registration Protocol (GMRP)/ GARP VLAN Registration Protocol (GVRP)

• Internet Group Management Protocol (IGMP)

• Simple Network Management Protocol (SNMP) v1/v2/v3 (with MD5 Authentication and DES encryption)  SNMP Inform

• Spanning Tree Protocol (STP)/ Rapid Spanning Tree Protocol (RSTP)/ Multiple Spanning Tree Protocol (MSTP)/ Media Redundancy Protocol (MRP)

• Virtual Local Area Network (VLAN)

• IEEE 802.1x/ Extensible Authentication Protocol (EAP)/ Remote Authentication Dial-In User Service (RADIUS)/ Terminal Access Controller Access-Control System (TACACS+)

• Security feature including IP Source Guard, DHCP Snooping, ARP Spoof Prevention and ARP Spoof Prevention and Access Control List (ACL)

• Ring

  • Ethernet Ring Protection Switching (ERPS)

  • iA-Ring

  • Compatible-Ring

  • Compatible-Chain

  • U-Ring

• Link Layer Discovery Protocol

• Alarm System (with E-mail Notification or Relay Output)

• Industrial Protocols

  • Modbus/TCP

  • Profinet (including MRP Ring)