What is the purpose of dividing vlan?
The purpose of dividing vlan:
1, Save resources, there are many broadcasts in a broadcast domain, etc., now in Within the broadcast domain, all hosts process it without a single broadcast.
2, Security, after isolating the broadcast domain, you can implement policies for different vlans. For example, the financial vlan does not allow access to the engineering and project vlans. If it is within a broadcast domain, it is more difficult to do; In addition, for example, ARP gateway spoofing is to use itself as a gateway to send out free ARP. If a vlan is divided, it can only affect hosts in a small broadcast domain.
3, Easy to manage, company employees can be divided into categories, such as finance, projects, sales, and post-processing. After classification, it is easy to make strategies and assign permissions. For example, finance can access the external network, and post-processing It can provide 10M broadband to the external network, and the second item provides 20M external network bandwidth.
Advantages of vlan:
The management overhead of moving, adding and modifying network equipment is reduced; broadcast activities can be controlled; network security can be improved.
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