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This section provides an overview for layer 3 switches as well as their applications and principles. Also, please take a look at the list of 5 layer 3 switch manufacturers and their company rankings.
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A Layer 3 Switch, also known as an L3 switch, is a device that encompasses functionalities of both the Data Link Layer (Layer 2) and the Network Layer (Layer 3).
Often referred to as L3 switches, these devices facilitate communication in computer networks using both the Data Link Layer, which utilizes MAC addresses, and the Network Layer, which uses IP addresses. Layer 3 switches can combine the characteristics of both layers to enable efficient communication.
Equipped with routing capabilities that allow communication between different subnets or networks, Layer 3 switches can efficiently connect multiple networks, enhancing communication control and security. However, due to their routing capabilities, configuration and management can become complex, requiring specialized knowledge for proper handling.
Layer 3 switches prove useful in various applications, including:
Layer 3 switches support multiple VLANs, allowing control of communication between different VLANs. VLANs refer to logically grouped sets of devices in a physical network. For example, it is possible to group devices within the same office into one VLAN and devices in different offices into separate VLANs.
By enabling communication between devices belonging to multiple VLANs, networks can be logically segmented, enhancing communication control and network security. Additionally, allowing communication between different VLANs optimizes network bandwidth usage more efficiently.
Layer 3 switches can route communication between different subnets, ensuring efficient control and management of communication in large-scale network environments with multiple subnets.
Layer 3 switches are frequently used to configure VPNs. VPNs are security technologies that establish private communication channels over the Internet. They are used to allow remote users to access resources within an office or facilitate secure communication between branch offices.
The principle of a Layer 3 switch involves combining the functionalities of the Data Link Layer (Layer 2) and the Network Layer (Layer 3) to achieve packet forwarding and routing.
At the Data Link Layer, the switch learns the MAC addresses of communicating devices. This is accomplished by associating the source MAC address within the frame and its corresponding port every time a frame is transmitted to the switch. The MAC address table enables the switch to determine which port to forward the frame to based on the destination MAC address.
Additionally, the switch learns the IP addresses of devices on the network for routing purposes. Layer 3 switches learn the IP addresses of devices connected to each port and construct an IP address table.
When a packet arrives at the Layer 3 switch, it first references the MAC address table at the Data Link Layer. Subsequently, it forwards the frame to the appropriate port based on the destination MAC address. It then references the IP address table at the Network Layer, identifying the network to which the destination IP address belongs.
When selecting a Layer 3 switch, it is crucial to choose equipment that aligns with the network's requirements and objectives. Here are key points to consider when choosing a Layer 3 switch:
Consider the size of the network and verify the required number of ports and interfaces. It is essential to consider future scalability. In large-scale network environments, switches with high port counts and multiple expansion slots may be necessary.
If routing between networks is necessary, confirm which routing protocols the switch supports. Selecting a switch that supports protocols compatible with dynamic routing is crucial if dynamic routing is required.
Security features such as access control lists (ACLs) and port security are crucial for enhancing network security. Confirm whether the switch supports these security features based on your requirements.
To choose reliable network equipment, select products from reputable vendors and verify the quality of support. Access to proper support is a critical factor for long-term network operation.
*Including some distributors, etc.
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Red Lion was founded in 1972 and headquartered in York, Pennsylvania as part of Spectris, PLC, headquartered in Egham, England. The company serves manufacturing, oil & gas, alternative energy, transportation, and water industries with products for their industrial automation and industrial networking needs. The company’s industrial automation division creates controllers, secure remote access platforms, panel meters, and process control devices. The industrial networking division offers ethernet devices, IIoT gateways and routers, and communication converters.
PLANET Technology Corporation is a global manufacturer of IP-based networking products for IoT, IIoT, and IoV applications. Founded in 1993, the company is headquartered in Taiwan. Offering switches, routers, wireless access points, and network security appliances, PLANET Technology serves diverse markets including small-to-medium-sized businesses and enterprises. They provide services like system integration, training, and technical support. With offices in over 60 countries, the company is committed to innovation and customer service. Their 30 years of industry experience make them a trusted partner for businesses seeking cost-effective networking solutions.
CTC Union Technologies Co. Ltd, established in 1993 and based in Taiwan, China, is a manufacturer and supplier of networking solutions and products. Its product portfolio includes management software, rackmount switches, ethernet switches, media converter, cellular routers, and fiber multiplexers. They are mainly used in two industries including the digital and telecommunication sectors. The company also offers a warranty policy, quality assurance with certified products, environmentally friendly solutions, and customer service.
EtherWAN Systems Inc., founded in 1996 and operating under the Phoenix Contact Group, is a manufacturer of industrial networking devices with dual headquarters in Taipei, Taiwan, and California, United States. The company develops products for challenging environments requiring high reliability and performance. Its portfolio includes industrial Ethernet switches for connecting multiple devices and forwarding data packets, industrial Ethernet extenders for expanding network coverage, and industrial wireless solutions for various industrial applications. The company also offers power over Ethernet (PoE) solutions for data and power delivery over a single Ethernet cable and network peripherals for network functionality extension.
Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Taiwan
|
2 | 66.7% |
|
United States of America
|
1 | 33.3% |
20 products found
20 products
D-Link Japan Co., Ltd.
300+ people viewing
Last viewed: 11 hours ago
Features ■High performance and high availability The DXS-3610 series is a high-performance 10G layer 3 switch equipped with 6 100G uplink ports, a ...
2 models listed
D-Link Japan Co., Ltd.
280+ people viewing
Last viewed: 16 minutes ago
Features ■Choose an image that suits your needs This switch is divided into MPLS version (MI), enhanced version (EI), and standard version (SI) acc...
5 models listed
D-Link Japan Co., Ltd.
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Features ■Gigabit layer 3 stackable smart managed switch The DGS-1520 series is a Gigabit layer 3 stackable smart managed switch that can provide f...
4 models listed
D-Link Japan Co., Ltd.
190+ people viewing
Last viewed: 7 hours ago
Features ■Bulk management using Nuclias cloud Nuclias-compatible access points and switches can also be configured from the same management screen,...
2 models listed
FXC Co., Ltd.
60+ people viewing
Last viewed: 5 hours ago
■Summary ・FXCX9526F is an L3 switch equipped with 2 slots of QSFP+ capable of 40G as uplink. ・Suitable for a variety of needs, from distribution ...
FXC Co., Ltd.
60+ people viewing
Last viewed: 5 hours ago
■Summary ・In addition to FXVLAN, it also supports IEEE802.1Q tag VLAN, protocol-based VLAN, and VoiceVLAN, and also has 802.1x authentication func...
FXC Co., Ltd.
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Last viewed: 5 hours ago
Web-based settings for various network functions are possible. ■Summary ・ES1024V3 is a Gigabit Ethernet switch equipped with 24 ports of 10BASE-T...
FXC Co., Ltd.
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Various network functions can be configured via the web. Gigabit smart switch with compact size and fanless silent design ■Summary -In addition to...
FXC Co., Ltd.
60+ people viewing
Last viewed: 5 hours ago
Various network functions can be configured via the web. Gigabit smart switch with compact size and fanless silent design ■Summary -In addition to...
