华为VRRP+VLAN+DHCP配置实例
华为VRRP搭建
- 什么是VRRP？
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- VRRP配置实例
- 配置命令
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- 检测
什么是VRRP？
VRRP全称为(Virtual Router Redundancy Protocol)，即虚拟路由冗余协议，简单来说就是用于解决静态网关单点故障的问题。可以把多台网关设备合并为一台。使其中一台网关设备down掉后，可以保证不会出现断网现象。
VRRP配置实例
拓扑结构图：
配置需求：
AR1为边界路由器
采用OSPF动态路由协议互联网段
SW1与SW2做VRRP虚拟网关
创建VLAN 10 VLAN20分割内网
VLAN10 IP：192.168.1.0 /24
VLAN20 IP: 192.168.2.0/24
虚拟网关：192.168.1.254/192.168.2.254
创建DHCP服务器网关指向虚拟网关
作用：
当SW1的下联接口down掉时，sw2可立马响应做为新网关，使内网网络不中断
配置命令
AR1：
interface GigabitEthernet0/0/0 #配置接口地址
ip address 11.0.0.1 255.255.255.0
interface GigabitEthernet0/0/1 #配置接口地址
ip address 12.0.0.1 255.255.255.0
interface LoopBack0 #配置环回口地址
ip address 1.1.1.1 255.255.255.255
ospf 100 router-id 1.1.1.1 #设置ospf进程号为100，ID为1.1.1.1
area 0.0.0.0 #设置为area0
network 1.1.1.1 0.0.0.0 #宣告环回口
network 11.0.0.1 0.0.0.0 #宣告接口地址
network 12.0.0.1 0.0.0.0 #宣告接口地址
SW1：
sysname SW1 #设置此交换机名称为SW1
vlan batch 10 20 30 #创建VLAN 10 20 30
dhcp enable #启用DHCP功能
ip pool dhcp2 #创建DHCP地址池，名字为dhcp2
gateway-list 192.168.2.254
network 192.168.2.0 mask 255.255.255.0
excluded-ip-address 192.168.2.250 192.168.2.253
dns-list 114.114.114.114 8.8.8.8
ip pool dncp1 #创建DHCP地址池，名字为dhcp1
gateway-list 192.168.1.254
network 192.168.1.0 mask 255.255.255.0
excluded-ip-address 192.168.1.250 192.168.1.253
dns-list 114.114.114.114 8.8.8.8
interface Vlanif10 #进入vlan10接口
ip address 192.168.1.1 255.255.255.0 #配置vlan10 ip
vrrp vrid 1 virtual-ip 192.168.1.254 #启用vrrp设置为组1，虚拟IP为192.168.1.254
vrrp vrid 1 priority 150 #修改此路由vrrp组1的优先级
dhcp select global #接口全局启用DHCP
interface Vlanif20
ip address 192.168.2.2 255.255.255.0
vrrp vrid 2 virtual-ip 192.168.2.254
dhcp select global
interface Vlanif30
ip address 11.0.0.2 255.255.255.0
interface GigabitEthernet0/0/23 #进入接口
port link-type trunk #接口模式改为trunk
port trunk allow-pass vlan 2 to 4094 #允许所有vlan通过
interface GigabitEthernet0/0/24
port link-type access #接口模式改为access
port default vlan 30 #接口绑定vlan 30
ospf 100 router-id 2.2.2.2
area 0.0.0.0
network 11.0.0.2 0.0.0.0
network 192.168.1.0 0.0.0.255
network 192.168.2.0 0.0.0.255
SW2：
sysname SW2
vlan batch 10 20 40
dhcp enable
ip pool dhcp1
gateway-list 192.168.1.254
network 192.168.1.0 mask 255.255.255.0
excluded-ip-address 192.168.1.250 192.168.1.253
dns-list 114.114.114.114 8.8.8.8
ip pool dhcp2
gateway-list 192.168.2.254
network 192.168.2.0 mask 255.255.255.0
excluded-ip-address 192.168.2.250 192.168.2.253
dns-list 114.114.114.114 8.8.8.8
interface Vlanif10
ip address 192.168.1.2 255.255.255.0
vrrp vrid 1 virtual-ip 192.168.1.254
dhcp select global
interface Vlanif20
ip address 192.168.2.1 255.255.255.0
vrrp vrid 2 virtual-ip 192.168.2.254
dhcp select global
interface Vlanif40
ip address 12.0.0.2 255.255.255.0
interface GigabitEthernet0/0/23
port link-type trunk
port trunk allow-pass vlan 2 to 4094
interface GigabitEthernet0/0/24
port link-type access
port default vlan 40
ospf 100 router-id 3.3.3.3
area 0.0.0.0
network 12.0.0.2 0.0.0.0
network 192.168.1.0 0.0.0.255
network 192.168.2.0 0.0.0.255
SW3：
sysname SW3
vlan batch 10 20
interface Ethernet0/0/1
port link-type access
port default vlan 10
interface Ethernet0/0/2
port link-type access
port default vlan 20
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 2 to 4094
interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 2 to 4094
检测
使用displady vrrp brief 可查看vrrp的状态
使用displady vrrp 可查看vrrp详细信息
