防火墙双机设备（旁挂组网），HRP双主原因

拓扑

FW1地址配置

[USG6000V1]in g0/0/0
[USG6000V1-GigabitEthernet0/0/0]undo ip binding  vpn-instance  default
Info: All IPv4 related configurations on this interface are removed!
Info: All IPv6 related configurations on this interface are removed!
[USG6000V1-GigabitEthernet0/0/0]ip address  1.1.1.1 30
[USG6000V1-GigabitEthernet0/0/0]qu
[USG6000V1]interface Eth-Trunk 1.100
[USG6000V1-Eth-Trunk1.100]ip address 192.168.1.1 24
[USG6000V1-Eth-Trunk1.100]vlan-type dot1q 100
[USG6000V1-Eth-Trunk1.100]qu
[USG6000V1]interface Eth-Trunk 1.200
[USG6000V1-Eth-Trunk1.200]ip address  192.168.2.1 24
[USG6000V1-Eth-Trunk1.200]vlan-type dot1q 200
[USG6000V1-Eth-Trunk1.200]qu
[USG6000V1]interface Eth-Trunk 1
[USG6000V1-Eth-Trunk1]qu
[USG6000V1]interface g1/0/0 
[USG6000V1-GigabitEthernet1/0/0]e
[USG6000V1-GigabitEthernet1/0/0]eth-trunk 1
[USG6000V1-GigabitEthernet1/0/0]in g1/0/1
[USG6000V1-GigabitEthernet1/0/1]eth-trunk 1

FW1安全域配置

[USG6000V1]firewall zone trust 
[USG6000V1-zone-trust]undo add interface  g0/0/0
[USG6000V1-zone-trust]add interface Eth-Trunk 
[USG6000V1-zone-trust]add interface Eth-Trunk 1.100
[USG6000V1-zone-trust]add interface Eth-Trunk 1.200
[USG6000V1-zone-trust]qu
[USG6000V1]firewall zone  dmz
[USG6000V1-zone-dmz]add interface g0/0/0
[USG6000V1-zone-dmz]qu
[USG6000V1]security-policy
[USG6000V1-policy-security] rule name  local-trust
[USG6000V1-policy-security-rule-local-trust]source-zone local 
[USG6000V1-policy-security-rule-local-trust]destination-zone trust 
[USG6000V1-policy-security-rule-local-trust]action permit  
[USG6000V1-policy-security-rule-local-trust]qu
[USG6000V1-policy-security]
[USG6000V1-policy-security]rule name  trust-local
[USG6000V1-policy-security-rule-trust-local]source-zone trust 
[USG6000V1-policy-security-rule-trust-local]destination-zone local 
[USG6000V1-policy-security-rule-trust-local]action permit 
[USG6000V1-policy-security-rule-trust-local]qu
[USG6000V1-policy-security]rule name  
[USG6000V1-policy-security]rule name  local-dmz
[USG6000V1-policy-security-rule-local-dmz]source-zone local 
[USG6000V1-policy-security-rule-local-dmz]destination-zone dmz
[USG6000V1-policy-security-rule-local-dmz]action permit 
[USG6000V1-policy-security-rule-local-dmz]qu
[USG6000V1-policy-security]rule name  
[USG6000V1-policy-security]rule name  dmz-local         
[USG6000V1-policy-security-rule-dmz-local]source-zone dmz 
[USG6000V1-policy-security-rule-dmz-local]source-zone dmz 
[USG6000V1-policy-security-rule-dmz-local]destination-zone local 
[USG6000V1-policy-security-rule-dmz-local]action permit 

FW2的初始配置和FW1几乎一样，不过多赘述

FW1、FW2VRRP配置

[USG6000V1]interface Eth-Trunk  1.100
[USG6000V1-Eth-Trunk1.100]vrrp vrid 100 virtual-ip 192.168.1.3  active 
[USG6000V1]interface Eth-Trunk  1.200
[USG6000V1-Eth-Trunk1.200]vrrp vrid 200 virtual-ip 192.168.2.3 standby 

[USG6000V1]interface Eth-Trunk  1.100
[USG6000V1-Eth-Trunk1.100]vrrp vrid 100 virtual-ip 192.168.1.3 24 standby 
[USG6000V1]interface Eth-Trunk 1.200
[USG6000V1-Eth-Trunk1.200]vrrp vrid 200 virtual-ip 192.168.2.3 active 

这里采用FW1为组100的主，FW2为组200的主，这样做如果是普通的VRRP是没问题的，但是如果配置了hrp就会出现问题，hrp会出现双主现象。
FW1 和FW2 的HRP状态


虽然状态是normal，但是两边的角色都是active，并且hrp的hello报文收发都是正常的，会话也是正常的，但是在实际项目中，为了避免对业务造成影响，建议把一台防火墙作为所有组的主，另一台作为备。

修改之后，FW2的hrp状态变为standby

HRP_M[FW1]interface Eth-Trunk  1.200 (+B)
HRP_M[FW1-Eth-Trunk1.200]undo vrrp vrid 200 virtual-ip 192.168.2.3 
HRP_M[FW1-Eth-Trunk1.200]vrrp vrid 200 virtual-ip 192.168.2.3 active 

HRP_S[FW2]interface Eth-Trunk  1.200
HRP_S[W2-Eth-Trunk1.200]undo vrrp vrid 200 virtual-ip 192.168.2.3
HRP_S[FW2-Eth-Trunk1.200]vrrp vrid 200 virtual-ip 192.168.2.3 standby 

结论

我们规划主用设备（业务主和配置主）所有VRRP备份组状态都配置为active，备用设备（业务备和配置备）所有VRRP备份组状态都配置为standby。VRRP备份组状态（配置）决定双机热备HRP中的主用设备和备用设备，这个结论未在华为产品手册中找到，是根据现网实施和模拟实验的推论。**

最后

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