Native VLAN Terminology

Terminology

Trunking · Extending multiple VLANs over the same physical connection

Native VLAN · By default, frames in this VLAN are untagged when sent across a trunk

Access VLAN · The VLAN to which an access port is Assigned

Switched Virtual Interface (SVI) · A virtual interface which provides a routed gateway into and out of a VLAN

Switch Port Modes

trunk · Forms an unconditional trunk

dynamic desirable · Actively attempts to negotiate a trunk with the distant end

dynamic auto · Will form a trunk only if requested by the distant end

access · Will never form a trunk

Troubleshooting

show vlan

show interface status

show interface switchport

show interface trunk

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Config AP 中文
https://blog.pmail.idv.tw/?p=14246

以下是在我的SW 接AP port 的設定(需要跑turk mode)

interface GigabitEthernet0/49
description to ap
switchport access vlan 112
switchport trunk encapsulation dot1q
switchport trunk native vlan 112
switchport mode trunk
spanning-tree portfast trunk