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What is the difference between a network core switch and an ordinary switch?
What is the difference between mentioning a core switch and an ordinary switch? I believe many of my friends are a little confused. Let's take a look today.
A core switch is not a type of switch, but a switch placed at the core layer (the backbone of the network) is called a core switch.
Generally, large-scale enterprise networks and Internet cafes need to purchase core switches to achieve strong network expansion capabilities to protect the original investment. Core switches will only be used when a certain number of computers are used. Basically, no more than 50 core switches are required. A router is enough. The so-called core switch is for network architecture. If it is a small LAN with several computers, an 8-port small switch can be called a core switch!
The difference between core switches and ordinary switches
1.The difference between ports
The number of common switch ports is generally 24-48. Most of the network ports are Gigabit Ethernet or 100M Ethernet ports. The main function is to access user data or aggregate switch data at some access layers. Configure Vlan simple routing protocol and some simple SNMP functions, the backplane bandwidth is relatively small.
2, the difference between users connecting or accessing the network
Generally, the part of the network that is directly connected to or accessed by users is called the access layer, and the part located between the access layer and the core layer is called the distribution or aggregation layer. The purpose of the access layer is to allow end users to connect to the network. Therefore, the access layer switch has the characteristics of low cost and high port density.
The aggregation layer switch is an aggregation point for multiple access layer switches. It must be able to handle all traffic from the access layer devices and provide uplinks to the core layer. Therefore, the aggregation layer switch has higher performance and fewer Interface and higher switching rates.
The main part of the network is called the core layer. The main purpose of the core layer is to provide optimized and reliable backbone transmission structure through high-speed forwarding communication. Therefore, the core layer switch application has higher reliability, performance and throughput.
Compared with ordinary switches, core switches need to have features such as large cache, high capacity, virtualization, scalability, and module redundancy technology.