Describes the network efficiency of symmetric switches.

When purchasing a vswitch. In terms of performance, in addition to meeting the basic standards recommended by RFC2544, namely throughput, latency, and packet loss rate, as user services increase and applications increase, all packets in the same range are mapped by the server switch and transmitted between the user and the same server.

In general, asymmetric switches are mainly used in three environments: The network used in server/client mode, the connection between user switches, and the connection between switches and vrouters. For enterprises with tight pockets, asymmetric switches are used to improve network performance.

Is a good choice. For example, asymmetric switches can be used to connect servers to clients. For example, when netxia used to work as a network administrator in a small business, the switch was still a relatively expensive device. An enterprise has a file server to improve the efficiency of the file server.

However, due to financial restrictions, netxia uses asymmetric switches to improve file server access efficiency. Connect the high-speed port to the file server, and connect the low-speed port to the client. Because when multiple employees access the file server at the same time.

More bandwidth is required to be allocated to the switch port connected to the server to prevent traffic bottlenecks on that port. In this case, the port connected to the file server has enough bandwidth to accommodate users' access requests, thus improving the efficiency of employees' access to the file server.

Vswitches can be divided into two types based on the speed of each port of a vswitch. Symmetric switches and non-symmetric switches. Symmetric switches provide exchange connections between ports with the same bandwidth. For example, all ports are 100 Mb/s ports. Asymmetric switches have different bandwidths on different ports. For example, some ports have 100 Mb/s while others have 10 Mb/s.

1. Common application scenarios of asymmetric Switches

Asymmetric switches are the first choice for enterprises that have funds and are unable to purchase high-end switches to improve network performance. If it is well utilized, it can greatly improve the network performance, and enterprises do not have to pay a high cost for it. It can be said that it is a cost-effective solution. In general, asymmetric switches are mainly used in the following places.

1. Network Used in server/client mode. If your enterprise deploys application servers, such as ERP servers and file servers, these servers tend to have high concurrent access. That is to say, multiple users may access these servers at the same time.

In this case, we can deploy an asymmetric switch on the server, connect the port with a high speed to the server, and then connect other ports to the client. In this case, the port speed of the server-side switch will not become a bottleneck resource for access, or it will effectively reduce the number of concurrent connections on the server side and affect server access.

Second, the connection between user switches. How can an enterprise handle more than one vswitch and multiple vswitches during network deployment? Communication between vswitches is also required. However, if a symmetric switch is used, the bandwidth is limited.

In fact, the communication between vswitches is like A river. The customer terminals connected to vswitches are like A stream. If all clients on vswitch A need to access clients on vswitch B, then these streams converge into a river.

In this case, if a symmetric switch port is used, the port connected to the switch will become a bottleneck resource, thus affecting network performance. On the contrary, if an asymmetric switch is used at this time and a port with a high speed is used for the connection between switches, the network access performance will be improved, this bottleneck does not exist or effectively reduces its impact on network performance.

Third, it is used to connect a vswitch to a vro. Currently, many enterprise networks are deployed on routers, switches, small switches, or hubs. The dial-up function of the vro is used to directly connect to the Internet. Then, the vswitch is used to connect to the vro to share the Internet with each other.

In this case, a problem occurs. The vswitch port connected to the vro may cause a traffic bottleneck. After all, data packets sent from other ports of the vswitch to access the external network must communicate with the vro through this port. At this time, it is not appropriate to use a high-end symmetric switch.

On the one hand, the price is relatively expensive. On the other hand, the bandwidth of only one port may be fully utilized. For other ports, the 10 Mbit/S bandwidth is enough, which is also a waste. Therefore, we can use asymmetric switches for connection. Connecting a high-speed port to a router can effectively solve the traffic bottleneck problem of the port connected to the router, thus improving the network performance.

Although asymmetric switches may work in more complex ways than symmetric switches, they are transparent to users. In other words, our network administrator can enjoy the role of asymmetric switches for enterprise network construction without additional management work.

Therefore, netxia believes that asymmetric switches are the preferred switch equipment in our enterprise network construction. I believe that, with the help of asymmetric switches, enterprises can save a lot of money compared with symmetric switches. In terms of network performance, symmetric switches are used to achieve the same effect. The most important thing is that our Network Administrator does not have to put extra effort into it.

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