Based on VMware, GNS3 on Centos7 as DHCP relay, DNS resolution, comprehensive experimental WEB server

Experimental topology

Experimental requirements

, According to the needs of the task as shown:

1) sw2 is a switcher, respectively vlan10, vlan20, vlan100 three vlan, f1 / 1-3 is an access link, f1 / 0 for the relay link.

2) sw1 of three switches, gateways are provided for the three vlan, vlan10: 192.168.10.1/24,vlan20: 192.168.20.1/24,vlan100: 192.168.100.1/24, external network interface f1 / 1: 12.0. 0.1 / 24

Internal 3) local area network Linux servers set up dhcp service functions vlan10, vlan20 and vlan100 provide an address, the address range

Vlan10: 192.168.10.100 ~ 192.168.10.200 Subnet Mask: 255.255.255.0 Gateway 192.168.10.1/24

Vlan20: 192.168.20.100 ~ 192.168.20.200 Subnet Mask: 255.255.255.0 Gateway 192.168.20.1/24

Vlan100: 192.168.100.100 ~ 192.168.100.200 Subnet Mask: 255.255.255.0 Gateway 192.168.100.1/24

dns server address is: 192.168.100.100/24

PC1 which hosts fixed address to get 192.168.10.18/24

4) internal LAN Linux servers set up DNS services resolve www.kgc.com and www.yun.com

Resolve address 14.0.0.14/24 WEB server outside the network, while providing pan-domain name resolution to resolve the address to 8.8.8.8

5) outside the network have a WEB server server2016 built, the establishment of a virtual machine host offers two websites, namely www.kgc.com and www.yun.com, custom-coded display content Home

6) to achieve the ultimate whole network interoperability, functionality and improve access

Experimental Procedure

1. Open GNS3, topology model according to FIG.