Cisco Configuration vlan+ Relay Agent +nat forwarding Internet

Lab Environment:

Routers make Tp-link set up NAT forwarding, Tp-link router gateway is set to 192.168.30.254

( core layer) Cisco 35,503 layer switch (model C3550-I5Q3L2-M) configuration three Vlan,vlan 10, VLAN 20, and VLAN 30

IP address for VLAN 10:192.168.10.1/24

IP address for VLAN 20:192.168.20.1/24

FA0/24 ports are configured as trunk port-level converged layer Cisco 2960 switch FA0/24 ports through VLAN 10 and VLAN 20

IP address for VLAN 30:192.168.30.1/24 is mainly used for connecting with Tp_link routers, setting up static route forwarding use, using FA0/23 port

( aggregation layer) Cisco 29,602-Layer Switching (model WS-C2960S-24TS-L) machine configuration two Vlan,vlan 10 and VLAN 20

callout:ga 1/0/1-5 Meaning: 1 for the first slot, 0 for the 0 slot on the card, and 1-5 for the port on the slot.

VLAN 10 divides the GI 1/0/1-5 port

VLAN 20 divides the GI 1/0/6-10 port

Gi 1/0/24 port configured as Trunk Port Cascade core layer Cisco 3550 Switch FA0/24 port through transmission VLAN 10 and VLAN 20

Gi 1/0/1 port Access DHCP server

( access layer) Tp-link SG 1024T Switch

Implementation features:

1, VLAN 10 and VLAN 20 can access each other.

2, the computer can automatically get the DHCP server to assign different VLAN IP address.

3, the computer can sisu net

##### #Cisco 3550 three-layer switch operation step ######

1. Create VLAN 10 and VLAN 20

#特权模式下进入VLAN子模式

switch#VLAN Database

#创建VLAN 10 named VLAN10

Switch (VLAN) #VLAN ten name VLAN10

#创建VLAN 20 named VLAN20

Switch (VLAN) #VLAN # name VLAN20

2. VLAN assignment IP address and gateway

#全局模式下进入VLAN 10

Switch (config) #interface VLAN

#VLAN 10 assigning IP addresses and gateways, 192.168.10.1 is the gateway for VLAN 10

Switch (config-if) #IP address 192.168.10.1 255.255.255.0

#退出

Switch (config-if) #Exit

#全局模式下进入VLAN 20

Switch (config) #interface VLAN

#VLAN 20 assigning IP addresses and gateways, 192.168.10.1 is the gateway for VLAN 20

Switch (config-if) #IP address 192.168.20.1 255.255.255.0

#退出

Switch (config-if) #Exit

#特权模式下查看当前配置信息

switch#Show Running-config

3. Turn on the three layer switch routing function

#全局模式下开启路由后VLAN can access each other.

Switch (config) #IP Routing

#特权模式下查看路由表

switch#show ip route

#特权模式下保存配置

switch#Write

4. VLAN Configuration DHCP Relay Agent

#全局模式下进入VLAN 10

Switch (config) #interface VLAN

#配置VLAN 10 Relay Agent, 192.168.10.200 is the DHCP server address

Switch (config-if) #IP helper-address 192.168.10.200

#退出VLAN 10

Switch (config-if) #Exit

#全局模式下进入VLAN 20

Switch (config) #interface VLAN

#配置VLAN 20 Relay Agent, 192.168.10.200 is the DHCP server address

Switch (config-if) #IP helper-address 192.168.10.200

#退出VLAN 20

Switch (config-if) #Exit

5. Set FA0/24 port to trunk port

switch#Show Interfaces fastethernet 0/24 Switchport

Name:fa0/24

Switchport:enabled

Administrative mode: dynamic desirable #三层交换机端口默认dynamic desirable do not have to set the trunk port, this mode will automatically adapt to the peer port operation mode

Operational Mode: trunk

6. Set up the static route forwarding router to realize the Internet

#特权模式下进入VLAN子模式

switch#VLAN Database

#VLAN 30 named Route30

Switch (VLAN) #VLAN-name Route30

#退出

Switch (VLAN) #Exit

#全局模式下进入VLAN 30

Switch (config) #interface VLAN

#VLAN 30 Configuring the IP address and gateway, 192.168.30.1 is the gateway for VLAN 30

Switch (config-if) #IP address 192.168.30.1 255.255.255.0

#退出

Switch (config-if) #Exit

#全局模式下进入fa0/23 Ports

Switch (config) #interface fastethernet 0/23

#fa0/23 Ports assigned to VLAN 30

Switch (config-if) #switchport access VLAN

#激活端口

Switch (config-if) #no shutdown

#全局模式下设置静态路由转发, 192.168.30.254 is the Tp-link router gateway

Switch (config) #IP route 0.0.0.0 0.0.0.0 192.168.30.254

#特权模式下查看路由表

switch#show ip route

#特权模式下保存配置

switch#Write

7. Tp-link Router set loopback static route

##### #Cisco 2960 Two-layer switch operation step ######

1. Create VLAN 10 and VLAN 20

#全局模式下创建vlan 10

Switch (config) #VLAN Ten

#VLAN 10 named VLAN10

Switch (Config-vlan) #name VLAN10

#退出VLAN 10

Switch (Config-vlan) #Exit

#全局模式下创建vlan 20

Switch (config) #VLAN

#VLAN 20 named VLAN20

Switch (Config-vlan) #name VLAN20

#退出VLAN 10

Switch (Config-vlan) #Exit

#特权模式下查看创建的VLAN

switch#Show VLAN

2. VLAN assignment port (VLAN 10 divides GI 1/0/1-5 port, vlan 20 divides GI 1/0/6-10 port)

#全局模式下进入ga 1/0/1-5 Port

Switch (config) #interface range gigabitethernet 1/0/1-5

#设置端口工作模式为access

Switch (config-if-range) #switchport mode access

#端口分配到VLAN 10

Switch (config-if-range) #switchport access VLAN

#激活端口

Switch (config-if-range) #no shutdown

#退出

Switch (config-if-range) #Exit

#全局模式下进入ga 1/0/5-6 Port

Switch (config) #interface range gigabitethernet 1/0/6-10

#设置端口工作模式为access

Switch (config-if-range) #switchport mode access

#端口分配到VLAN 20

Switch (config-if-range) #switchport access VLAN

#激活端口

Switch (config-if-range) #no shutdown

#退出

Switch (config-if-range) #Exit

#特权模式下查看VLAN Port allocation

switch#Show VLAN

3. Set GA1/0/24 port to trunk port

#全局模式下进入Gi 1/0/24 Port

Switch (config) #interface gigabitethernet 1/0/24

#设置Gi 1/0/24 Port is trunk port

Switch (config-if) #switchport mode trunk

#激活端口

Switch (config-if) #no shutdown

#退出

Switch (config-if) #Exit

#特权模式下查看 Gi 1/0/24 Port operating mode

switch#Show Interfaces gigabitethernet 1/0/24 Switchport

Administrative Mode: trunk

#特权模式下保存配置

switch#Write

Cisco Configuration vlan+ Relay Agent +nat forwarding Internet