VLAN间单臂路由访问

实验书上的拓朴图：



注意TRUNK端口和路由器子端口设置，可以承载不同的VLAN标签。

交换机（用2691加交换模块实现的）：

Building configuration...

Current configuration : 1623 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
no ip routing
!
!
!
no ip cef
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
no ip address
no ip route-cache
shutdown
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
no ip route-cache
shutdown
duplex auto
speed auto
!
interface FastEthernet1/0
switchport access vlan 2
no ip address
!
interface FastEthernet1/1
switchport mode trunk
no ip address
!
interface FastEthernet1/2
no ip address
shutdown
!
interface FastEthernet1/3
no ip address
shutdown
!
interface FastEthernet1/4
no ip address
shutdown
!
interface FastEthernet1/5
no ip address
shutdown
!
interface FastEthernet1/6
no ip address
shutdown
!
interface FastEthernet1/7
no ip address
shutdown
!
interface FastEthernet1/8
no ip address
shutdown
!
interface FastEthernet1/9
no ip address
shutdown
!
interface FastEthernet1/10
switchport access vlan 3
no ip address
!
interface FastEthernet1/11
switchport access vlan 3
no ip address
shutdown
!
interface FastEthernet1/12
no ip address
shutdown
!
interface FastEthernet1/13
no ip address
shutdown
!
interface FastEthernet1/14
no ip address
shutdown
!
interface FastEthernet1/15
no ip address
shutdown
!
interface Vlan1
ip address 192.168.1.2 255.255.255.0
no ip route-cache
!
ip default-gateway 192.168.1.1
ip http server
no ip http secure-server
ip classless
!
!
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
!
end

路由器A：

version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
!
!
!
ip cef
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
ip address 192.168.1.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/0.2
encapsulation dot1Q 2
ip address 192.168.2.1 255.255.255.0
no snmp trap link-status
!
interface FastEthernet0/0.3
encapsulation dot1Q 3
ip address 192.168.3.1 255.255.255.0
no snmp trap link-status
!
interface FastEthernet0/1
ip address 192.168.6.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet1/0
no ip address
shutdown
!
interface FastEthernet1/1
no ip address
shutdown
!
interface FastEthernet1/2
no ip address
shutdown
!
interface FastEthernet1/3
no ip address
shutdown
!
interface FastEthernet1/4
no ip address
shutdown
!
interface FastEthernet1/5
no ip address
shutdown
!
interface FastEthernet1/6
no ip address
shutdown
!
interface FastEthernet1/7
no ip address
shutdown
!
interface FastEthernet1/8
no ip address
shutdown
!
interface FastEthernet1/9
no ip address
shutdown
!
interface FastEthernet1/10
no ip address
shutdown
!
interface FastEthernet1/11
no ip address
shutdown
!
interface FastEthernet1/12
no ip address
shutdown
!
interface FastEthernet1/13
no ip address
shutdown
!
interface FastEthernet1/14
no ip address
shutdown
!
interface FastEthernet1/15
no ip address
shutdown
!
interface Vlan1
no ip address
shutdown
!
ip http server
no ip http secure-server
ip classless
!
!
!
!
!
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 0 4
!
end

注意不好的型号和不同的模拟设备，最好单独配置idlepc值。

用idlepc get r1----idlepc save r1获得和保存IDLEPC值，要不然，CPU会操爆的。。。如果IDLEPC值正确，则五六个模拟都没有问题的。

如果发现设置了IDLEPC值之后，计算机CPU值还是超高，则可以重新运算生成和保存。