5-以太网和VLAN作业

# 设置接口类型为 access
port link-type access

# 撤销接口类型设置
undo port link-type

# 设置接口类型为 access，并划分给 vlan 2
port link-type access
port default vlan 2

# 撤销上述操作
undo port default 
undo port link-type

# 设置接口类型为 trunk，并将接口共享给 vlan 2 和 vlan 3
port link-type access
port trunk allow-pass vlan 2 3

# 撤销上述操作（先撤销共享，再撤销类型）
undo port allow-pass vlan 2 3
undo port link-type