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Categories (x) > Networking > Switches > Commercial/Office Grade > 48- to 52-Port (x)

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  • Firmware... 
  • 48-Port PoE+ Gigabit Managed Switch Eco
    Firmware for the LPB2848A (Version v1.58)
 
  • Manual... 
  • Gigabit Managed Switch CLI Guide
    CLI Guide for the LGB1108A, LGB1126A, and LGB1148A (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... 
    • Gigabit Managed Switch User Manual
      User Manual for the LGB1108A, LGB1126A, and LGB1148A (Version 1)
     
    • Manual... 
    • Gigabit Ethernet Managed Switch CLI Guide
      CLI Guide for the LGB5028A and LGB5052A (Version 1)
     

    Black Box Explains...Layer 3 switching.

    In the last decade, network topologies have typically featured routers along with hubs or switches. The hub or switch acts as a central wiring point for LAN segments while the... more/see it nowrouter takes care of higher-level functions such as protocol translation, traffic between LAN segments, and wide-area access.

    Layer 3 switching, which combines Layer 2 switching and Layer 3 IP routing, provides a more cost-effective way of setting up LANs by incorporating switching and routing into one device. While a traditional Layer 2 switch simply sends data along without examining it, a Layer 3 switch incorporates some features of a router in that it examines data packets before sending them on their way. The integration of switching and routing in a Layer 3 switch takes advantage of the speed of a switch and the intelligence of a router in one economical package.

    There are two basic types of Layer 3 switching: packet-by-packet Layer 3 (PPL3) and cut-through Layer 3.

    PPL3 switches are technically routers in that they examine all packets before forwarding them to their destinations. They achieve top speed by running protocols such as OSPF (Open Shortest Path First) and by using cache routing tables. Because these switches understand and take advantage of network topology, they can blow the doors off traditional routers with speeds of more than 7,000,000 (that’s seven million!) packets per second.

    Cut-through Layer 3 switching relies on a shortcut for top speed. Cut-through Layer 3 switches, rather than examining every packet, examine only the first in a series to determine its destination. Once the destination is known, the data flow is switched at Layer 2 to achieve high speeds. collapse

    • Firmware... 
    • 52-Port Gigabit Ethernet Managed Switch
      Firmware for the LGB5052A (Version v2.00)
     
    • Manual... 
    • Gigabit L3 Managed Switch with 10G Uplinks Installation Guide
      Installation Guide for the LGB6026A, LGB6050A, LGB6001C, LGB6000SC-001, & LGB6000SC-004 (Version 1)
     
    • Video...Power over Ethernet Explained

      There are a lot of misconceptions and myths surrounding Power over Ethernet (PoE). Learn what PoE is—and is not—and clarify how it can be an important part of your network.


    Product Data Sheets (pdf)...Gigabit L3 Managed Switches with 10G Uplinks

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