Tag Archives: 10gbe switch

What is the Function of Switch in Networking

Network switches have been an indispensable component in corporate or data center networking. However, faced with the question that what the exact function of switch in networking is, a few people can answer that in a systematic way. In this post, this question is going to be solved.

What Is the Network Switch

The network switch in networking is a small hardware device that can be regarded as a network bridge with multi-ports, centrally addressing communications among all sort of connected devices, like servers, PCs, and access points within one local area network (LAN).

Network Switches in Networking

Figure 1: Network Switches in NetWorking

Types of the Network Switches

As shown in the market, there is a wide range of switches in the market. If you want to figure them out, you should bear in mind with clear criteria. With different standards, types of the switch are matched differently. For example, based on the transmitting rapid, you can get subbranches, like fast Ethernet switch, Gigabit Ethernet switch, 10Gigabit switch, etc. When looking at the configuration options, unmanaged switch and managed switch can be found. In this part, the configuration option will be introduced in details.

Unmanaged Switch

In networking, an unmanaged switch is used to achieve basic connectivity without any configuration interface or options. Just plug them in, they will work. Mostly, they are preferred in small offices and home offices environment or wherever a few ports are needed.

Managed Switch

Comparing with an unmanaged switch, the managed switch, also called smart switches, gives users more flexibility to configure switches as they need. Surely, it brings greater security and targeted networking to users. It supports many management interfaces, like Web UI, CLI, or both. The configuration of VLAN is the common application for a managed switch. For this type, 10gbe switch, 40gbe switch and 100gbe switch are the common choices.

Unmanaged Switch (Left) and Managed Switch (Right)

Figure 2: Unmanaged Switch (Left) and Managed Switch (Right)

The Function of Switch in Networking

No matter in your home or small offices, the network switch seems to be ubiquitous in network applications. For people outside the industry, you may wonder what the switch function is or what the benefits will the network switch brings about. Here, the main function of switch in networking will be listed below:

  • Saving cost. Running cables to industrial Ethernet nodes one by one, it’s a huge cost and even unreliable. Therefore, the switch can be a cost-effective choice in wiring.
  • Easy installation. Without the need for the climate controlled enclosure, switch installation will be easier and more convenient.
  • Low latency. When the transmission of network packet between the source device and target device has low latency, the time will be saved.
  • Eliminating collision. With specified ports of the network switches, the access of the data packet sent by different devices will be spotted faster and targeted transmitted to the matching devices without unnecessary collision.
Front and Back Panel Overview of S5800-8TF12S Fully-Managed Switch

Figure 3: Front and Back Panel Overview of S5800-8TF12S Fully-Managed Switch


As an essential component in network cabling, the function of switch in networking has been highlighted by many users. In this post, the general function of switch has been introduced. If you want to know more about network switches or solutions for network cabling, you can visit FS.COM for professional guidance.

Why Choose 10 Gigabit ISCSI Switch for SAN?

With the development of technology, many users are considering upgrading to 10 Gigabit Ethernet switch. Of course, when it comes to the edges of the fiber switch, the obvious advantage of the Gigabit switch is the speed. The Gigabit Ethernet and 10GbE switch can also bring other advantages, such as reducing cabling and bottlenecks. In addition, another important advantage is iSCSI support. This involves our theme today: 10G iSCSI switch for SAN, which is highly scalable because its capacity can be added as required.

Ethernet Switches

What is the SAN (Storage Area Network)?

The SAN is a dedicated high-speed network or subnet that connects shared pools of multiple storage devices to multiple servers. The SAN is usually assembled through three main components: cabling, host bus adapters (HBAs), and switches connected to storage arrays and servers. Now, let’s focus on the SAN switch. What need SAN switches to do is to move storage traffic. SAN switches are usually FC switches, which are compatible with many FC protocols based on SAN. At the same time, SAN switches can also be based on Ethernet. Such switches should only process traffic on IP SAN to maintain predictable performance. Ethernet switches provide traffic for IP addresses. They treat iSCSI storage targets as IP addresses. These Ethernet switches are what we call iSCSI switches.

Those people who focus on 10G devices have a common misconception that only an expensive and difficult-to-maintain fiber connect network is needed to effectively connect distributed storage SAN. While the FC has its advantages, the iSCSI switch can run economically on your existing Ethernet hardware (although the dedicated hardware is better) and works well on a 10G network.

Understanding the ISCSI Switch

When we need to build our SANs or iSCSI network, we usually heard of DELL iSCSI switch, HP iSCSI switch and so on. However, what is the iSCSI switch? The iSCSI switch is a device that processes and channels data between the iSCSI initiator and the target on a storage device. ISCSI traffic is usually high speed and high capacity, and it needs to be provided with minimal delay. Unlike dedicated FC SAN switches, iSCSI switches are standard Ethernet network switches and can be used for iSCSI traffic optimization. ISCSI switches provide reliability while enhancing network control and supporting quality of service.

10G ISCSI Switch

Figure: 10G ISCSI Switch

The Reason Why Choose 10G ISCSI Switches for SAN

Then, why we choose 10G iSCSI switches for SAN? There are three main reasons, they can be concluded as follows:

  • Flow control: building the SAN by using 10G iSCSI switches can help the host avoid being overwhelmed by the high traffic associated with iSCSI storage through allowing the host to control the rate at which data is received, and use flow control. Traffic control can also help prevent packet loss and avoid increased delays in iSCSI storage networks.
  • Jumbo frame: the high payload of jumbo frames can be processed by providing fewer frames to the switch, thereby improving the efficiency of data transmission. This can improve 10G iSCSI performance, but using jumbo frames may cost more. Basically, the better the iSCSI switch is, the better your SAN will be.
  • Link aggregation: also known as port trunking, this feature combines switch ports into higher bandwidth trunks to increase throughput and create redundancy. This is significant for you to build your SAN.


The world’s needs for data is growing, and nothing seems to be able to solve this problem. The video is becoming more and more high-definition, VR application is more and more used, and even the daily web pages are upgraded. If your business is already feeling the pressure of a data bottleneck, upgrading to a 10G iSCSI switch will put you back on the fast lane.