VLAN/单臂路由/DHCP配置方法

PC9为后来验证排除地址池下发IP地址所连（本命令不包含此端口命令）
一.基本VLAN（虚拟局域网，隔离冲突域和广播域）配置
1.sw1配置
[sw1]vlan batch 2 3
[sw1]interface e0/0/1
[sw1-Ethernet0/0/1]port link-type access
[sw1-Ethernet0/0/1]port default vlan 2
[sw1-Ethernet0/0/1]q
[sw1]interface e0/0/2
[sw1-Ethernet0/0/2]port link-type access
[sw1-Ethernet0/0/2]port default vlan 2
[sw1-Ethernet0/0/2]q
[sw1]interface e0/0/3
[sw1-Ethernet0/0/3]port link-type access
[sw1-Ethernet0/0/3]port default vlan 3
[sw1-Ethernet0/0/3]q
[sw1]interface e0/0/4
[sw1-Ethernet0/0/4]port link-type access
[sw1-Ethernet0/0/4]port default vlan 3
[sw1-Ethernet0/0/4]q
[sw1]interface e0/0/5
[sw1-Ethernet0/0/5]port link-type trunk
[sw1-Ethernet0/0/5]port trunk allow-pass vlan all