本知识重点考核大家对VRRP、DHCP掌握情况，实验要求如下：
实验要求：
1.SW1为vlan 10的主网关，vlan 20的备份网关；
2.SW2为vlan 20的主网关，vlan 10的备份网关；
3.DHCP服务器在vlan 66，网关在SW2上面；
4.PC1、PC2自动获取ip地址且可以互相ping通。- 实验拓扑图如下：
第一步，进行基本网络配置，配置步骤及命令如下：
SW1上配置如下命令：sysname SW1
vlan batch 10 20 66
interface GigabitEthernet0/0/1
port link-type access
port default vlan 10
interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan all
interface Vlanif10
ip address 192.168.10.251 255.255.255.0
interface Vlanif20
ip address 192.168.20.251 255.255.255.0
interface Vlanif66
ip address 192.168.66.251 255.255.255.0
SW2上配置如下命令：sysname SW2
vlan batch 10 20 66
interface GigabitEthernet0/0/1
port link-type access
port default vlan 20
interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan all
interface GigabitEthernet0/0/3
port link-type access
port default vlan 66
interface Vlanif10
ip address 192.168.10.252 255.255.255.0
interface Vlanif20
ip address 192.168.20.252 255.255.255.0
interface Vlanif66
ip address 192.168.66.252 255.255.255.0
第二步，进行VRRP配置，如下：
SW1上配置如下命令：interface Vlanif10
vrrp vrid 10 virtual-ip 192.168.10.250
vrrp vrid 10 priority 200
interface Vlanif20
vrrp vrid 20 virtual-ip 192.168.20.250
SW2上配置如下命令：interface Vlanif10
vrrp vrid 10 virtual-ip 192.168.10.250
interface Vlanif20
vrrp vrid 20 virtual-ip 192.168.20.250
vrrp vrid 20 priority 200
第三步，配置DHCP，命令如下：
DHCP服务器配置sysname DHCP
interface GigabitEthernet0/0/0
ip address 192.168.66.1 255.255.255.0
dhcp select global
ip route-static 0.0.0.0 0.0.0.0 192.168.66.252
ip pool p1
gateway-list 192.168.10.250
network 192.168.10.0 mask 255.255.255.0
dns-list 8.8.8.8
ip pool p2
gateway-list 192.168.20.250
network 192.168.20.0 mask 255.255.255.0
dns-list 8.8.8.8
SW1上配置如下命令：dhcp enable
interface Vlanif10
dhcp select relay
dhcp relay server-ip 192.168.66.1
interface Vlanif20
dhcp select relay
dhcp relay server-ip 192.168.66.1
SW1上配置如下命令：dhcp enable
interface Vlanif10
dhcp select relay
dhcp relay server-ip 192.168.66.1
interface Vlanif20
dhcp select relay
dhcp relay server-ip 192.168.66.1
最后，进行验证查看。
查看vrrp如下：
PC端查看如下：
通过以上查看得知，网关以及DHCP配置均满足实验要求，实验完成！！！
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