虚拟网(VLAN)在逻辑上等价于广播域。用户可以处在不同的物理LAN上，但他们之间可以像在同一个LAN上那样自收通信而不受物理位置的限制。
Logically, VLAN equals broadcasting LAN. Even in different LAN, users can communicate freely just like in the same LAN, not restricted by the physical location.
虚拟网(VLAN)在逻辑上等价于广播域。用户可以处在不同的物理LAN上，但他们之间可以像在同一个LAN上那样自收通信而不受物理位置的限制。
Logically, VLAN equals broadcasting LAN. Even in different LAN, users can communicate freely just like in the same LAN, not restricted by the physical location.
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