DHCP, VLAN, NAT, large comprehensive experiment

1. Experimental Topology

2. The experimental requirements ：

（1）. Network wide accessibility
（2）. The addresses required in the topology are all based on 192.168.0.0/24 Divide the income
（3）. Static routing （ Do not use other static ）
（4）.R8 Loopback needs to be summarized  

3. Experimental thinking ：

（1） be based on 192.168.0.0/24 Divide subnets

（2） First, configure two switches VLAN, Divide at the interface VLAN

（3） stay AR3 Router configuration DHCP( Automatically assigned IP Address )

（4） This experiment requires the use of static , So make static configuration , The whole network can reach

（5） stay AR5 To configure NAT, Realize address translation , Realize private network access to public network

（6） Optimize the network

4. Configuration command

stay SW1,SW2 To create a VLAN, And divide the interface into VLAN

 

 

  Configure the routing AR3, Create a pond （a,b), Configure interfaces IP, Write static and default .

 

 

  adopt DHCP Get PC Of IP, gateway , Subnet mask ,DNS

With PC1,PC2 For example

 

  establish AR2 Three loops of , Configure interfaces IP, Write static , And default

  to AR1,AR4 To configure IP, Static and default

 

 

 

  because AR4 To AR5 The backup effect needs to be achieved , So configure the priority

 

Conduct AR3 Summary of loopback , Reduce routing table entries

 

  verification PC1pingPC3

 pc1ping AR5

 

 

  Summary ;

Advantages and disadvantages of static protocols ：

shortcoming ：1、 Large and medium-sized network configurations

      2、 It cannot be changed in real time based on the change of topology

advantage ：

      1、 No additional temporary physical resources

      2、 safety problem

      3、 Calculate the path problem