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Categories (x) > Networking > Switches > Industrial > 8-Port Industrial Switches (x)

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  • Quick Start Guide... 
  • Hardened Managed Ethernet Switch Quick Start Guide
    Quick Start Guide for the LEH1000 Series (Version 1)
 
  • Video...Hardened Managed Ethernet Switches Overview

    See how the LEH family of Hardened Managed Ethernet Switches provides increased reliability and redundancy in industrial networks. This brief overview covers how the switches are designed to withstand extreme... more/see it nowtemperatures and harsh conditions in a multitude of environments from the factory floor to traffic control. collapse

  • Quick Start Guide... 
  • Hardened Managed Ethernet Switch Quick Start Guide
    Quick Start Guide for the LEH1100 Series (Version 1)
 

The difference between unmanaged, managed, and Web-smart switches

With regard to management options, the three primary classes of switches are unmanaged, managed, and Web smart. Which you choose depends largely on the size of your network and how... more/see it nowmuch control you need over that network.

Unmanaged switches are basic plug-and-play switches with no remote configuration, management, or monitoring options, although many can be locally monitored and configured via LED indicators and DIP switches. These inexpensive switches are typically used in small networks or to add temporary workgroups to larger networks.

Managed switches support Simple Network Management Protocol (SNMP) via embedded agents and have a command line interface (CLI) that can be accessed via serial console, Telnet, and Secure Shell. These switches can often be configured and managed as groups. More recent managed switches may also support a Web interface for management through a Web browser.

These high-end switches enable network managers to remotely access a wide range of capabilities including:

  • SNMP monitoring.
  • Enabling and disabling individual ports or port Auto MDI/MDI-X.
  • Port bandwidth and duplex control.
  • IP address management.
  • MAC address filtering.
  • Spanning Tree.
  • Port mirroring to monitor network traffic.
  • Prioritization of ports for quality of service (QoS).
  • VLAN settings.
  • 802.1X network access control.
  • IGMP snooping.
  • Link aggregation or trunking.

  • Managed switches, with their extensive management capabilities, are at home in large enterprise networks where network administrators need to monitor and control a large number of network devices. Managed switches support redundancy protocols for increased network availability.

    Web-smart switches—sometimes called smart switches or Web-managed switches—have become a popular option for mid-sized networks that require management. They offer access to switch management features such as port monitoring, link aggregation, and VPN through a simple Web interface via an embedded Web browser. What these switches generally do not have is SNMP management capabilities or a CLI. Web-smart switches must usually be managed individually rather than in groups.

    Although the management features found in a Web-smart switch are less extensive than those found in a fully managed switch, these switches are becoming smarter with many now offering many of the features of a fully managed switch. Like managed switches, they also support redundancy protocols for increased network availability.

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    • Manual... 
    • Hardened Managed Ethernet Switch User Manual
      User Manual for the LEH900 Series, LEH1000 Series, LEH1100, & LEH1200 Series (Version 3)
     

    The ANSI/ISA Standard and Hazardous Locations

    Fires and explosions are a major safety concern in industrial plants. Electrical equipment that must be installed in these locations should be specifically designed and tested to operate under extreme... more/see it nowconditions. The hazardous location classification system was designed to promote the safe use of electrical equipment in those areas “where fire or explosion hazards may exist due to flammable gases or vapors, flammable liquids, combustible dust, or ignitable fibers of flyings.”

    The NEC and CSA define hazardous locations by three classes:
    Class 1: Gas or vapor hazards
    Class 2: Dust hazards
    Class 3: Fibers and flyings

    Two divisions:
    Division 1: An environment where ignitable gases, liquids, vapors or dusts can exist Division 2: Locations where ignitables are not likely to exist

    Hazardous classes are further defined by groups A, B, C, D, E, F, and G:
    A. Acetylene
    B. Hydrogen
    C. Ethlene, carbon monoxide
    D. Hydrocarbons, fuels, solvents
    E. Metals
    F. Carbonaceous dusts including coal, carbon black, coke
    G. Flour, starch, grain, combustible plastic or chemical dust

    ANSI/ISA 12.12.01
    Our line of Industrial Ethernet Switches (LEH1208A, LEH1208A-2GMMSC, LEH1216A and LEH1216A-2GMMSC) is fully compliant with ANSI/ISA 12.12.01, a construction standard for Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations. ANSI/ISA 12.12.01-2000 is similar to UL1604, but is more stringent (for a full list of changes, see Compliance Today). UL1604 was withdrawn in 2012 and replaced with ISA 12.12.01.

    The standard provides the requirements for the design, construction, and marking of electrical equipment or parts of such equipment used in Class I and Class II, Division 2 and Class III, Divisions 1 and 2 hazardous (classified) locations. This type of equipment, in normal operation, is not capable of causing ignition.

    The standard establishes uniformity in test methods for determining the suitability of equipment as related to their potential to ignite to a specific flammable gas or vapor-in-air mixture, combustible dust, easily ignitable fibers, or flyings under the following ambient conditions:
    a) an ambient temperature of -25°C to 40°C.
    b) an oxygen concentration of not greater than 21 percent by volume.
    c) a pressure of 80 kPa (0.8 bar) to 110 kPa (1.1 bar).

    The standard is available for purchase at www.webstore.ansi.org. To learn more about ANSI/ISA 12.12.01 and hazardous location types, visit https://www.osha.gov/doc/outreachtraining/htmlfiles/hazloc.html. -- collapse

    • Visio Stencil Drawing... 
    • Visio Stencil
      Stencil Drawings
     
    • Video...Hardened Managed Ethernet Switches Demonstration

      In this clever demonstration, a movie is played on-screen to show how Black Box's Hardened Managed Ethernet Switches provide instantaneous failover when the primary link fails. You'll see how there... more/see it nowis virtually no change in the on-screen movie due to dropped packets when the primary cable link is physically cut. collapse

    • Quick Start Guide... 
    • Hardened Managed Ethernet Switch Quick Start Guide
      Quick Start Guide for the LEH900 Series (Version 1)
     
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