VRRP 主备模式 实验
交换机之间全部trunk，交换与PC之间access，交换机与路由之间配置IP地址
核心1：
stp instance 1 root primary
stp instance 2 root secondary
核心2：
stp instance 2 root primary
stp instance 1 root secondary
VRRP配置：
sw1：核心1
interface Vlanif2
ip address 192.168.2.254 255.255.255.0
vrrp vrid 2 virtual-ip 192.168.2.1
vrrp vrid 2 priority 120
vrrp vrid 2 track interface GigabitEthernet0/0/6 //跟踪上联端口，配置监听端口，当这个地方down 优先级减10
vrrp vrid 2 track interface GigabitEthernet0/0/1 //跟踪下联端口，配置监听端口，当这个地方down 优先级减10
#
interface Vlanif3
ip address 192.168.3.254 255.255.255.0
vrrp vrid 3 virtual-ip 192.168.3.1
vrrp vrid 3 priority 120
vrrp vrid 3 track interface GigabitEthernet0/0/6
vrrp vrid 3 track interface GigabitEthernet0/0/1
#
interface Vlanif4
ip address 192.168.4.254 255.255.255.0
vrrp vrid 4 virtual-ip 192.168.4.1
vrrp vrid 4 priority 120
vrrp vrid 4 track interface GigabitEthernet0/0/6
vrrp vrid 4 track interface GigabitEthernet0/0/1
#
interface Vlanif5
ip address 192.168.5.254 255.255.255.0
vrrp vrid 5 virtual-ip 192.168.5.1
vrrp vrid 5 priority 120
vrrp vrid 5 track interface GigabitEthernet0/0/6
vrrp vrid 5 track interface GigabitEthernet0/0/1
sw2：核心2
interface Vlanif2
ip address 192.168.2.253 255.255.255.0
vrrp vrid 2 virtual-ip 192.168.2.1
vrrp vrid 2 track interface GigabitEthernet0/0/6
vrrp vrid 2 track interface GigabitEthernet0/0/4
#
interface Vlanif3
ip address 192.168.3.253 255.255.255.0
vrrp vrid 3 virtual-ip 192.168.3.1
vrrp vrid 3 track interface GigabitEthernet0/0/6
vrrp vrid 3 track interface GigabitEthernet0/0/4
#
interface Vlanif4
ip address 192.168.4.253 255.255.255.0
vrrp vrid 4 virtual-ip 192.168.4.1
vrrp vrid 4 track interface GigabitEthernet0/0/6
vrrp vrid 4 track interface GigabitEthernet0/0/4
interface Vlanif5
ip address 192.168.5.253 255.255.255.0
vrrp vrid 5 virtual-ip 192.168.5.1
vrrp vrid 5 track interface GigabitEthernet0/0/6
vrrp vrid 5 track interface GigabitEthernet0/0/4
SW1(VRRP)状态
SW2(VRRP)状态
OSPF：
核心1
ospf 1
area 0.0.0.0
network 192.168.2.0 0.0.0.255
network 192.168.3.0 0.0.0.255
network 192.168.4.0 0.0.0.255
network 192.168.5.0 0.0.0.255
network 12.1.1.0 0.0.0.255
核心2
ospf 1
area 0.0.0.0
network 192.168.2.0 0.0.0.255
network 192.168.3.0 0.0.0.255
network 192.168.4.0 0.0.0.255
network 192.168.5.0 0.0.0.255
network 23.1.1.0 0.0.0.255
路由器：
ospf 1
area 0.0.0.0
network 12.1.1.0 0.0.0.255
network 23.1.1.0 0.0.0.255
缺省路由配置：
核心1：
ip route-static 0.0.0.0 0.0.0.0 12.1.1.1
ip route-static 0.0.0.0 0.0.0.0 23.1.1.1 preference 65
核心2：
ip route-static 0.0.0.0 0.0.0.0 23.1.1.1
ip route-static 0.0.0.0 0.0.0.0 12.1.1.1 preference 65
修改ospf 开销值 保证来回路径一致：
核心1：int vlanif4
ospf cost 4
int vlanif5
ospf cost 4
核心2：
int vlanif2
ospf cost 4
int vlanif3
ospf cost 4
关闭STP核心交换机上联接口（对接路由器）
int gi 0/0/X
stp disable(关闭STP计算接口会收敛更快）
OSPF中一定要宣告 route-ID 1.1.1.1 2.2.2.2 3.3.3.3 由这些来触发心跳hello报文
int look 0
ip add 1.1.1.1 24
DHCP服务器配置：
dhcp enable
#
dhcp snooping enable
#
ip pool vlan2
gateway-list 192.168.2.1
network 192.168.2.0 mask 255.255.255.0
excluded-ip-address 192.168.2.250 192.168.2.254
dns-list 3.3.3.3
#
ip pool vlan3
gateway-list 192.168.3.1
network 192.168.3.0 mask 255.255.255.0
excluded-ip-address 192.168.3.250 192.168.3.254
dns-list 3.3.3.3
#
ip pool vlan4
gateway-list 192.168.4.1
network 192.168.4.0 mask 255.255.255.0
excluded-ip-address 192.168.4.250 192.168.4.254
dns-list 3.3.3.3
#
ip pool vlan5
gateway-list 192.168.5.1
network 192.168.5.0 mask 255.255.255.0
excluded-ip-address 192.168.5.250 192.168.5.254
dns-list 3.3.3.3
#
interface GigabitEthernet0/0/0
ip address 10.10.10.2 255.255.255.0
dhcp select global
#
ip route-static 0.0.0.0 0.0.0.0 10.10.10.1
核心1交换机DHCP配置：
#
dhcp enable
#
dhcp snooping enable
#
interface Vlanif2
dhcp select relay
dhcp relay server-ip 10.10.10.2
#
interface Vlanif3
dhcp select relay
dhcp relay server-ip 10.10.10.2
#
interface Vlanif4
dhcp select relay
dhcp relay server-ip 10.10.10.2
#
interface Vlanif5
dhcp select relay
dhcp relay server-ip 10.10.10.2
接入网交换DHCP配置：
dhcp enable
dhcp snooping enable
vlan 2
dhcp snooping enable
interface Ethernet0/0/1
dhcp snooping trusted
下面PC即可获取IP地址信息
