单臂路由实验
1.单臂路由介绍
单臂路由（router-on-a-stick）是指在路由器的一个接口上通过配置子接口或“逻辑接口”，并不存在真正物理接口）的方式，实现原来相互隔离的不同VLAN（虚拟局域网）之间的互联互通。
2.单臂路由模拟实验
2.1实验拓扑
2.2实验要求
| 设备 | 接口 | IP | Netmask | Gateway | Vlan |
| R1 | GE0/0/1.1 | 192.168.1.254 | 255.255.255.0 | None | |
| GE0/0/1.2 | 192.168.2.254 | 255.255.255.0 | None | ||
| GE0/0/1.3 | 192.168.3.254 | 255.255.255.0 | None | ||
| PC1 | Ethernet0/0/1 | 192.168.1.1 | 255.255.255.0 | 192.168.1.254 | 10 |
| PC2 | Ethernet0/0/1 | 192.168.2.1 | 255.255.255.0 | 192.168.2.254 | 20 |
| PC3 | Ethernet0/0/1 | 192.168.3.1 | 255.255.255.0 | 192.168.3.254 | 30 |
2.3交换机配置
SW1
sysname SW1
#
vlan batch 10 20 30
#
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 10 20 30
#
interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 10 20 30
#
interface GigabitEthernet0/0/3
port link-type trunk
port trunk allow-pass vlan 10 20 30
#
SW2
sysname SW2
#
vlan batch 10 20
#
interface Ethernet0/0/1
port link-type access
port default vlan 10
#
interface Ethernet0/0/2
port link-type access
port default vlan 20
#
SW3
sysname SW3
#
vlan batch 30
#
interface Ethernet0/0/1
port link-type access
port default vlan 30
#
interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 10 20 30
#
2.4路由器配置
sysname R1
#
interface GigabitEthernet0/0/1.1
# 配置子接口对一层tag报文的终结功能
dot1q termination vid 10
ip address 192.168.1.254 255.255.255.0
# 开启子接口的ARP广播功能
arp broadcast enable
#
interface GigabitEthernet0/0/1.2
# 配置子接口对一层tag报文的终结功能
dot1q termination vid 20
ip address 192.168.2.254 255.255.255.0
# 开启子接口的ARP广播功能
arp broadcast enable
#
interface GigabitEthernet0/0/1.3
# 配置子接口对一层tag报文的终结功能
dot1q termination vid 30
ip address 192.168.3.254 255.255.255.0
# 开启子接口的ARP广播功能
arp broadcast enable
#
2.5实验结果
三台PC可以相互ping通
