默认上下来全两个vrrp主都是左边
工作原理：
vrrp刚开机都是先initialize状态，然后切成active或standb状态。
hrp使用18514端口，且用的单播，要策略放行，由主设备发hrp心跳报文
如果设备为acitve状态时自动优先级为65001，如果有故障自动减2，变成64999，并将自身转发standby状态，时间较短，用户不可见。
如果主设备接口down掉，主设备切成standby状态后，那这个接口会一直处于initialize状态不变.。
如果是standby状态时自动优先级为65000
主要配置：
FW1
hrp enable
hrp interface GigabitEthernet1/0/2 remote 172.16.0.2
interface GigabitEthernet1/0/0
undo shutdown
ip address 1.1.1.2 255.255.255.0
vrrp vrid 2 virtual-ip 1.1.1.1 active
interface GigabitEthernet1/0/1
undo shutdown
ip address 10.1.1.2 255.255.255.0
vrrp vrid 1 virtual-ip 10.1.1.1 active
interface GigabitEthernet1/0/2
undo shutdown
ip address 172.16.0.1 255.255.255.0
firewall zone trust
set priority 85
add interface GigabitEthernet0/0/0
add interface GigabitEthernet1/0/1
firewall zone untrust
set priority 5
add interface GigabitEthernet1/0/0
firewall zone dmz
set priority 50
add interface GigabitEthernet1/0/2
security-policy //暂时全允许
default action permit
FW2:
hrp enable
hrp interface GigabitEthernet1/0/2 remote 172.16.0.1
interface GigabitEthernet1/0/0
undo shutdown
ip address 1.1.1.3 255.255.255.0
vrrp vrid 2 virtual-ip 1.1.1.1 standby
interface GigabitEthernet1/0/1
undo shutdown
ip address 10.1.1.3 255.255.255.0
vrrp vrid 1 virtual-ip 10.1.1.1 standby
interface GigabitEthernet1/0/2
undo shutdown
ip address 172.16.0.2 255.255.255.0
firewall zone trust
set priority 85
add interface GigabitEthernet0/0/0
add interface GigabitEthernet1/0/1
firewall zone untrust
set priority 5
add interface GigabitEthernet1/0/0
firewall zone dmz
set priority 50
add interface GigabitEthernet1/0/2
security-policy
default action permit
查看：
dis hrp state verbose