Benefits and Uses of Multilayer Switches

Last Updated on Fri, 02 Jun 2023 | Routing Protocols

The multilayer switch is both faster and less expensive than a standalone router. These attributes make multilayer switches an attractive way to supplement a premise-edge router. Its best use is as a front end to an interior gateway router in a modified form of collapsed backbone LAN. Figure 15-3 illustrates this.

Figure 15-3: A multilayer switch reduces the workload of the interior gateway router.

Figure 15-3: A multilayer switch reduces the workload of the interior gateway router.

Routing Command Multilayer Switch

This arrangement features the following division of responsibilities:

• The hardware-based router is used as a gateway between the LAN and the internetwork beyond.

• The less-expensive IP switch helps reduce the workload of that interior gateway router by functioning as a collapsed backbone switch.

The Future of Routing

In this arrangement, the only datagrams that would be passed from the IP switch to the router would be those addressed to destinations that lie beyond the local LAN. All communications between clients and servers (which reside on separate LAN segments) would be spared the hop through the standalone router. There are three main benefits to using this configuration:

• The efficiency of the standalone router is greatly increased because its workload is limited to just WAN access functions.

• The cost per-port of LAN switches tends to be substantially less than the cost of a comparable router port. Reducing the router's workload may also enable the use of a smaller, less-expensive router.

• The efficiency of LAN-to-LAN communication is also increased, because the multilayer switch operates much faster than a traditional router in a collapsed backbone LAN.

After examining the benefits and limitations of multilayer switches, there can only be one conclusion: They are a wonderful complement to a standalone router in very large LAN environments.

Continue reading here: The Effects of IPv6

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  • Networking with Multilayer Switches
  • Routing Protocols: A Comprehensive Guide
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Readers' Questions

  • christin
    Why we use multi layar switch?
    5 months ago
    • A multi-layer switch is a device in computer networking that combines the functions of a network switch and a router. It is capable of routing and switching at the same time, and is often used in middle-tier networks for enterprise, campus, and service provider environments. It can provide increased performance, higher port density, and greater scalability than a layer 2 switch. It also provides advanced functionality such as quality of service (QoS), virtual private network (VPN) support, IPv6 support, and rate limiting.
    • Aubrey
      Can a multilayer switch implement routing protocols?
      5 months ago
      • Yes, it can. Multilayer switches are capable of controlling and routing layer two and layer three traffic, and can therefore run routing protocols such as Open Shortest Path First (OSPF), Routing Information Protocol (RIP), and Enhanced Interior Gateway Routing Protocol (EIGRP).
      • joe
        What are the advantages of using a multilayer switch in your network?
        8 months ago
        1. Improved Network Performance: Multi-layer switches can process and forward traffic at line rate speeds on all ports. This eliminates data bottlenecks and improves the overall performance of the network.
        2. Improved Security: Multi-layer switches are capable of running more advanced security protocols such as VLANs, Access Control Lists (ACLs), and private VLANs. This helps reduce the risk of unauthorized access and protect sensitive data.
        3. Reduced Cost: Multi-layer switches are more cost-effective than traditional switches. They are capable of handling multiple layers of traffic, allowing you to use fewer devices to achieve the same functionality.
        4. Longer Life Span: Multi-layer switches typically last longer than traditional switches due to their higher processing power, higher quality components, and the ability to upgrade.
        5. Reduced Complexity: Multi-layer switches are easier to manage than traditional switches due to their ability to handle multiple layers of traffic on one device. This reduces the need for multiple switches and increases the efficiency of your network.