Switches can be a valuable asset to networking. Overall, they can increase the capacity and speed of your network. However, switching should not be seen as a cure-all for network issues. Before incorporating network switching, you must first ask yourself two important questions: First, how can you tell if your network will benefit from switching? Second, how do you add switches to your network design to provide the most benefit?
This tutorial is written to answer these questions. Along the way, we’ll describe how switches work, and how they can both harm and benefit your networking strategy. We’ll also discuss different network types, so you can profile your network and gauge the potential benefit of network switching for your environment.
What is a Switch?
Switches occupy the same place in the network as hubs. Unlike hubs, switches examine each packet and process it accordingly rather than simply repeating the signal to all ports. Switches map the Ethernet addresses of the nodes residing on each network segment and then allow only the necessary traffic to pass through the switch. When a packet is received by the switch, the switch examines the destination and source hardware addresses and compares them to a table of network segments and addresses. If the segments are the same, the packet is dropped or “filtered”; if the segments are different, then the packet is “forwarded” to the proper segment. Additionally, switches prevent bad or misaligned packets from spreading by not forwarding them.
Filtering packets and regenerating forwarded packets enables switching technology to split a network into separate collision domains. The regeneration of packets allows for greater distances and more nodes to be used in the total network design, and dramatically lowers the overall collision rates. In switched networks, each segment is an independent collision domain. This also allows for parallelism, meaning up to one-half of the computers connected to a switch can send data at the same time. In shared networks all nodes reside in a single shared collision domain.
Easy to install, most switches are self learning. They determine the Ethernet addresses in use on each segment, building a table as packets are passed through the switch. This “plug and play” element makes switches an attractive alternative to hubs.
SDVoE-ready 100G and 10G Ethernet switches combining the configurability of a matrix switch with the power and scalability of Ethernet to support hundreds of AV over IP endpoints.
Enterprises recognize that all of the new technologies they want to deploy – IoT, edge computing, serverless, containers, hybrid cloud, and AI – require a robust, flexible, secure, self-healing, software-driven network.
And the industry has responded with fresh new approaches such as software-defined networking (SDN), SD-WAN, hyperconverged infrastructure (HCI) and intent-based networking.
NETGEAR Fully Managed Switches connect end-users, critical services, servers and storage across flexible core, distribution and access layers. Our Managed Infrastructure combines latest advances in hardware and software engineering for higher flexibility, lower complexity and stronger investment protection. A single-pane-of-glass management platform – NMS300 – increases overall operational efficiency.
server switches
Every component used in Perle Industrial Temperature Ethernet Switches have been designed and tested to handle operating temperatures between -40 and 75C. Many Ethernet switch manufacturers claim -40 to 75C but use commercial parts which will severely limit the reliability and lifecycle of the product. Product failures become inevitable when “commercial-grade” parts are exposed to extremely high or low temperatures. For example, integrated circuits on the PCB overheat causing premature failure of the product. Under-rated connectors do not allow for proper contact between the device and the cables. These failures eventually stop all data communications in these high and low temperature environments.
Choose a manufacturer that builds Standards-Based switches.
This tutorial is written to answer these questions. Along the way, we’ll describe how switches work, and how they can both harm and benefit your networking strategy. We’ll also discuss different network types, so you can profile your network and gauge the potential benefit of network switching for your environment.
What is a Switch?
Switches occupy the same place in the network as hubs. Unlike hubs, switches examine each packet and process it accordingly rather than simply repeating the signal to all ports. Switches map the Ethernet addresses of the nodes residing on each network segment and then allow only the necessary traffic to pass through the switch. When a packet is received by the switch, the switch examines the destination and source hardware addresses and compares them to a table of network segments and addresses. If the segments are the same, the packet is dropped or “filtered”; if the segments are different, then the packet is “forwarded” to the proper segment. Additionally, switches prevent bad or misaligned packets from spreading by not forwarding them.
Filtering packets and regenerating forwarded packets enables switching technology to split a network into separate collision domains. The regeneration of packets allows for greater distances and more nodes to be used in the total network design, and dramatically lowers the overall collision rates. In switched networks, each segment is an independent collision domain. This also allows for parallelism, meaning up to one-half of the computers connected to a switch can send data at the same time. In shared networks all nodes reside in a single shared collision domain.
Easy to install, most switches are self learning. They determine the Ethernet addresses in use on each segment, building a table as packets are passed through the switch. This “plug and play” element makes switches an attractive alternative to hubs.
SDVoE-ready 100G and 10G Ethernet switches combining the configurability of a matrix switch with the power and scalability of Ethernet to support hundreds of AV over IP endpoints.
Enterprises recognize that all of the new technologies they want to deploy – IoT, edge computing, serverless, containers, hybrid cloud, and AI – require a robust, flexible, secure, self-healing, software-driven network.
And the industry has responded with fresh new approaches such as software-defined networking (SDN), SD-WAN, hyperconverged infrastructure (HCI) and intent-based networking.
NETGEAR Fully Managed Switches connect end-users, critical services, servers and storage across flexible core, distribution and access layers. Our Managed Infrastructure combines latest advances in hardware and software engineering for higher flexibility, lower complexity and stronger investment protection. A single-pane-of-glass management platform – NMS300 – increases overall operational efficiency.
server switches
Every component used in Perle Industrial Temperature Ethernet Switches have been designed and tested to handle operating temperatures between -40 and 75C. Many Ethernet switch manufacturers claim -40 to 75C but use commercial parts which will severely limit the reliability and lifecycle of the product. Product failures become inevitable when “commercial-grade” parts are exposed to extremely high or low temperatures. For example, integrated circuits on the PCB overheat causing premature failure of the product. Under-rated connectors do not allow for proper contact between the device and the cables. These failures eventually stop all data communications in these high and low temperature environments.
Choose a manufacturer that builds Standards-Based switches.
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