What are the advantages of Switched Ethernet over Shared Ethernet?

Switched Ethernet.

It can switch between high-speed and low-speed networks to achieve coordination between different networks. At present, most switched Ethernet networks have 100Mbps ports, which are connected to the server through the corresponding 100Mbps network card, which temporarily solves the bottleneck of 10Mbps and becomes the preferred solution for network LAN upgrades.

It offers multiple channels at the same time, more than traditional shared hubs.

To provide more bandwidth, the traditional shared 10Mbps 100Mps Ethernet uses broadcast communication mode, which can only communicate between one pair of users at a time, and has to be retried in case of collision, while switched Ethernet allows different users to transmit, for example, a 16-port Ethernet switch allows 16 sites to communicate between 8 links.

Especially in terms of time response, the advantages make the LAN switch highly favored. It provides wider bandwidth and higher speeds than routers at a lower cost than routers, unless there is a wide area network.

WAN), otherwise, the switch has a tendency to replace the router.

This is a very conceptual question, are you learning about the Internet? Switched Ethernet is an Ethernet network with nodes as switches, which divides the conflict domain. Shared Ethernet means that there are no Layer 2 or more devices to divide the collision domain, that is, the node is the Layer 1 device, such as the hub, so that the shared logical bus is in the same collision domain.

Network efficiency is not as good as switched Ethernet, and in medium to large networks, collision and broadcast domains should often be considered to improve network performance.

1. Different definitions:

Hubs and switches are widely used as networking relay devices in local area networks, where the local area network that uses the hub for connection is called the shared local area network, and the local area network that uses the switch for connection is called the switched local area network.

2. The core is different

Typical examples of shared Ethernet are bus networks using 10base2 10base5 and hub-centric networks. In Ethernet using a hub, the hub centralizes many Ethernet devices onto a single central device.

Switched Ethernet is a star-shaped topology network built with a switched hub or switch as the center. In switched Ethernet, the switch determines which port the data frame should be sent to based on the MAC address in the received data frame.

The characteristics of the Ethernet switch are as follows:

2. Each interface is directly connected to a host or another Ethernet switch, and generally works in full-duplex mode.

3. Ethernet switches are parallel.

4. It can connect multiple pairs of interfaces at the same time, and multiple pairs of hosts can communicate at the same time. Hosts that communicate with each other are exclusively transmitted**, and data is transmitted without collision.

5. The interface of the Ethernet switch has memory, which can cache the incoming frames when the output port is busy.

6. The Ethernet switch is a plug-and-play device, and its internal frame exchange table (also known as the address table) is automatically and gradually established through a self-learning algorithm.

7. The Ethernet switch uses a special switching structure chip, and the rate is much faster than that of the software bridge.

1. Each port of the Ethernet switch is directly connected to the host, and generally works in full-duplex mode.

2. The switch can connect many pairs of ports at the same time, so that each pair of hosts that communicate with each other can transmit data without conflict like exclusive communication.

3. If the bandwidth from an interface to the host is 10Mbit/s, then the total capacity of a switch with 10 interfaces is 100Mbit/s. This is the biggest advantage of the switch.

Forming a virtual LAN: A virtual LAN is built on the basis of a physical network, so the establishment of a VLAN requires corresponding network equipment that supports VLAN technology. When different VLANs in the network communicate with each other, routing support is required, and routing equipment needs to be added, and to realize the routing function, both routers and Layer 3 switches can be used to complete, and the number of users is also strictly limited.

Switched Ethernet does not need to change other hardware of the network, including cables and users' network cards, and only needs to use switched switches to change the shared hub, saving the cost of user network upgrades.

It can switch between high-speed and low-speed networks to achieve coordination between different networks. Most switched Ethernet networks have a 100Mbps port, which is connected to the server through the corresponding 100Mbps network card, which temporarily solves the 10Mbps bottleneck and becomes the preferred solution for network LAN upgrades.

It provides multiple channels at the same time, providing more bandwidth than traditional shared hubs, the traditional shared 10Mbps 100mps Ethernet uses broadcast communication methods, which can only communicate between one pair of users at a time, and has to be retried in the event of a collision, while switched Ethernet allows transmission between different users, for example, a 16-port Ethernet switch allows 16 sites to communicate between 8 links.

Especially in terms of time response, LAN switches are highly preferred. It provides wider bandwidth and higher speed than routers at a lower cost than routers, and unless there is a requirement for access to a wide area network (WAN), switches tend to replace routers.

Exclusive bandwidth, disorderly competition, point-to-point transmission mode, full-duplex communication, support VLAN applications, effectively isolate data, avoid broadcast storms, switched Ethernet is well compatible with traditional Ethernet, and protect user investment to the greatest extent.

1. Different interfaces: Switched Ethernet is connected to an interface with a switch, which is a conflict domain, while shared Ethernet is connected with a hub, which has only one conflict domain.

2. Different nodes: All nodes on a shared LAN share the same bandwidth, while switching Ethernet uses network switches to establish multiple exclusive connections between different network segments.

3. Different properties: Shared Ethernet is that all nodes in the network share network bandwidth, and the most typical is the Ethernet connected by the hub. The average bandwidth for each node in the network is approximately equal to the total number of nodes.

Switched Ethernet refers to Ethernet with switching technology, and theoretically each node will get close to the total bandwidth.

Switched Ethernet: With a switch, an interface is a collision domain.

Shared Ethernet: Connected with a hub, there is only one collision domain.

Answer]: Compared with shared Ethernet, switched Ethernet has the following advantages: 1. The node in switched Ethernet has exclusive bandwidth, and the total bandwidth of the network is usually the sum of the bandwidth of each switching port, which fundamentally solves the problem of network bandwidth.

2. Switched Ethernet allows multiple pairs of sites to communicate at the same time, which greatly improves the utilization rate of the network. 3. Switched Ethernet has a high degree of scalability and network scalability. In addition, switched Ethernet is easy to manage, and the chain can be adjusted to adjust the distribution of network loads, making efficient use of network bandwidth.

4. Switched Ethernet can divide the network site into several logical working groups through network management functions or other software, and each working group is a virtual network. The core formation of a virtual network is independent of the geographic location of the site. 5. Switched Ethernet can be compatible with existing networks.

Ethernet switches have the ability to automatically convert frame formats and interconnect LANs of different standards. For example, Ethernet, FDDI, and ATM can be integrated on a single switch.