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CLI: Example for Configuring Hot Standby in Load Balancing Mode Where Firewalls Are Deployed in In-path Mode and Connect to Routers in Upstream and Downstream Directions

This section provides a CLI example of configuring hot standby in load balancing mode in which the service interfaces of the firewalls work at Layer 3 and connect to routers in upstream and downstream directions.

Networking Requirements

As shown in Figure 1, the service interfaces of the FWs work at Layer 3 and are directly connected to routers. OSPF runs between the FWs and upstream and downstream routers. The FWs are expected to work in load balancing mode. Normally, both FW_A and FW_B forward traffic. If either FW fails, the other FW forwards all traffic to ensure service continuity.

Figure 1 Networking diagram for configuring load balancing when service interfaces work at Layer 3 and connect to routers

Procedure

  1. Complete basic network configurations.

    FW_A

    FW_B

    # Set IP addresses for the interfaces on FWs.

    		 
    <FW_A> system-view 
[FW_A] interface GigabitEthernet 0/0/1
[FW_A-GigabitEthernet0/0/1] ip address 10.2.0.1 24
[FW_A-GigabitEthernet0/0/1] quit 
[FW_A] interface GigabitEthernet 0/0/3
[FW_A-GigabitEthernet0/0/3] ip address 10.3.0.1 24
[FW_A-GigabitEthernet0/0/3] quit 
[FW_A] interface GigabitEthernet 0/0/7
[FW_A-GigabitEthernet0/0/7] ip address 10.10.0.1 24
[FW_A-GigabitEthernet0/0/7] quit 
    <FW_B> system-view 
[FW_B] interface GigabitEthernet 0/0/1
[FW_B-GigabitEthernet0/0/1] ip address 10.2.1.1 24
[FW_B-GigabitEthernet0/0/1] quit 
[FW_B] interface GigabitEthernet 0/0/3
[FW_B-GigabitEthernet0/0/3] ip address 10.3.1.1 24
[FW_B-GigabitEthernet0/0/3] quit 
[FW_B] interface GigabitEthernet 0/0/7
[FW_B-GigabitEthernet0/0/7] ip address 10.10.0.2 24
[FW_B-GigabitEthernet0/0/7] quit

    # Assign the interfaces to security zones on FWs.

    		 
    [FW_A] firewall zone trust
[FW_A-zone-trust] add interface GigabitEthernet 0/0/3
[FW_A-zone-trust] quit 
[FW_A] firewall zone dmz
[FW_A-zone-dmz] add interface GigabitEthernet 0/0/7
[FW_A-zone-dmz] quit 
[FW_A] firewall zone untrust
[FW_A-zone-untrust] add interface GigabitEthernet 0/0/1
[FW_A-zone-untrust] quit
    		 
    [FW_B] firewall zone trust
[FW_B-zone-trust] add interface GigabitEthernet 0/0/3
[FW_B-zone-trust] quit 
[FW_B] firewall zone dmz
[FW_B-zone-dmz] add interface GigabitEthernet 0/0/7
[FW_B-zone-dmz] quit 
[FW_B] firewall zone untrust
[FW_B-zone-untrust] add interface GigabitEthernet 0/0/1
[FW_B-zone-untrust] quit

    # Configure OSPF to ensure IP connectivity on FWs.

    		 
    [FW_A] ospf 10
[FW_A-ospf-10] area 0
[FW_A-ospf-10-area-0.0.0.0] network 10.2.0.0 0.0.0.255
[FW_A-ospf-10-area-0.0.0.0] network 10.3.0.0 0.0.0.255
[FW_A-ospf-10-area-0.0.0.0] quit
[FW_A-ospf-10] quit
    		 
    [FW_B] ospf 10
[FW_B-ospf-10] area 0
[FW_B-ospf-10-area-0.0.0.0] network 10.2.1.0 0.0.0.255
[FW_B-ospf-10-area-0.0.0.0] network 10.3.1.0 0.0.0.255
[FW_B-ospf-10-area-0.0.0.0] quit
[FW_B-ospf-10] quit

  2. Configure hot standby.

    FW_A

    FW_B

    # Configure VGMP groups to monitor upstream and downstream service interfaces on FWs.

    		 
    [FW_A] hrp track interface GigabitEthernet 0/0/1
[FW_A] hrp track interface GigabitEthernet 0/0/3
    		 
    [FW_B] hrp track interface GigabitEthernet 0/0/1
[FW_B] hrp track interface GigabitEthernet 0/0/3

    # Configure quick session backup on both FWs in case of inconsistent forward and return packet paths.

    		 
    [FW_A] hrp mirror session enable
    		 
    [FW_B] hrp mirror session enable

    # Specify the heartbeat interface and enable hot standby on FWs.

    		 
    [FW_A] hrp interface GigabitEthernet 0/0/7 remote 10.10.0.2
[FW_A] hrp enable 
    [FW_B] hrp interface GigabitEthernet 0/0/7 remote 10.10.0.1
[FW_B] hrp enable

  3. Create a security policy on FW_A. After hot standby relationship is established, the security policy on FW_A will be automatically backed up to FW_B.

    # Configure security policies to allow FWs and the upstream/downstream routers to exchange OSPF packets.

    Controlling function of security policies for OSPF packets are configured by the firewall packet-filter basic-protocol enable command. By default, the function of the firewall packet-filter basic-protocol enable command is enabled. That is, OSPF packets are controlled by security policies. In this case, a security policy must be configured between the security zones where the upstream/downstream service interfaces reside and the local zone to allow OSPF packets to pass. In this example, enabling the firewall packet-filter basic-protocol enable command is used as an example.

    HRP_M[FW_A] security-policy
HRP_M[FW_A-policy-security] rule name policy_ospf_1 
HRP_M[FW_A-policy-security-rule-policy_ospf_1] source-zone local
HRP_M[FW_A-policy-security-rule-policy_ospf_1] destination-zone trust untrust
HRP_M[FW_A-policy-security-rule-policy_ospf_1] service ospf
HRP_M[FW_A-policy-security-rule-policy_ospf_1] action permit
HRP_M[FW_A-policy-security-rule-policy_ospf_1] quit
HRP_M[FW_A-policy-security] rule name policy_ospf_2 
HRP_M[FW_A-policy-security-rule-policy_ospf_2] source-zone trust untrust
HRP_M[FW_A-policy-security-rule-policy_ospf_2] destination-zone local
HRP_M[FW_A-policy-security-rule-policy_ospf_2] service ospf
HRP_M[FW_A-policy-security-rule-policy_ospf_2] action permit
HRP_M[FW_A-policy-security-rule-policy_ospf_2] quit

    # Configure a security policy to allow intranet users to access the Internet.

    HRP_M[FW_A-policy-security] rule name policy_sec 
HRP_M[FW_A-policy-security-rule-policy_sec] source-zone trust
HRP_M[FW_A-policy-security-rule-policy_sec] destination-zone untrust
HRP_M[FW_A-policy-security-rule-policy_sec] source-address 10.3.2.0 24
HRP_M[FW_A-policy-security-rule-policy_sec] source-address 10.3.3.0 24
HRP_M[FW_A-policy-security-rule-policy_sec] action permit

  4. Configure the routers.

    Configure OSPF on the routers to advertise routes. For configuration commands, refer to the related documents of the routers.

Verification

Run the display hrp state verbose command on FW_A and FW_B to check the VGMP group status. If the following information is displayed, hot standby relationship is successfully established.

FW_A

FW_B

 
HRP_M<FW_A> display hrp state verbose
 Role: active, peer: active    
 Running priority: 45000, peer: 45000                                         
 Backup channel usage: 30%       
 Stable time: 1 days, 13 hours, 35 minutes                                      
 Last state change information: 2018-03-22 16:01:56 HRP core state changed, old_
state = normal(active), new_state = normal(active), local_priority = 45000,
 peer_priority = 45000.       
              
 Configuration:                 
 hello interval:              1000ms 
 preempt:                     60s  
 mirror configuration:        off
 mirror session:              on 
 track trunk member:          on
 auto-sync configuration:     on
 auto-sync connection-status: on
 adjust ospf-cost:            on
 adjust ospfv3-cost:          on
 adjust bgp-cost:             on
 nat resource:                off
                                
 Detail information:            
                       GigabitEthernet0/0/1: up
                       GigabitEthernet0/0/3: up
                                  ospf-cost: +0
 
HRP_S<FW_B> display hrp state verbose
 Role: active, peer: active    
 Running priority: 45000, peer: 45000      
 Backup channel usage: 30%       
 Stable time: 1 days, 13 hours, 35 minutes   
 Last state change information: 2018-03-22 16:01:56 HRP core state changed, old_
state = normal(standby), new_state = normal(active), local_priority = 45000,
 peer_priority = 45000.       
              
 Configuration:                 
 hello interval:              1000ms 
 preempt:                     60s   
 mirror configuration:        off   
 mirror session:              on
 track trunk member:          on
 auto-sync configuration:     on
 auto-sync connection-status: on
 adjust ospf-cost:            on
 adjust ospfv3-cost:          on
 adjust bgp-cost:             on
 nat resource:                off   
                                
 Detail information:            
                       GigabitEthernet0/0/1: up
                       GigabitEthernet0/0/3: up
                                  ospf-cost: +0

Configuration Scripts

FW_A

FW_B

 
#
 hrp enable
 hrp interface GigabitEthernet 0/0/7 remote 10.10.0.2
 hrp mirror session enable
 hrp track interface GigabitEthernet 0/0/1
 hrp track interface GigabitEthernet 0/0/3
#
interface GigabitEthernet 0/0/1
 ip address 10.2.0.1 255.255.255.0
#
interface GigabitEthernet 0/0/3
 ip address 10.3.0.1 255.255.255.0
#
interface GigabitEthernet 0/0/7
 ip address 10.10.0.1 255.255.255.0
#  
firewall zone trust
 set priority 85
 add interface GigabitEthernet 0/0/3
#  
firewall zone untrust
 set priority 5
 add interface GigabitEthernet 0/0/1
#  
firewall zone dmz
 set priority 50
 add interface GigabitEthernet0/0/7
#  
ospf 10 
 area 0.0.0.0
  network 10.2.0.0 0.0.0.255
  network 10.3.0.0 0.0.0.255
#  
security-policy
 rule name policy_ospf_1
  source-zone local
  destination-zone trust
  destination-zone untrust
  service ospf
  action permit
 rule name policy_ospf_2
  source-zone trust
  source-zone untrust
  destination-zone local
  service ospf
  action permit
 rule name policy_sec
  source-zone trust
  destination-zone untrust
  source-address 10.3.2.0 24
  source-address 10.3.3.0 24
  action permit
 
#
 hrp enable
 hrp interface GigabitEthernet 0/0/7 remote 10.10.0.1
 hrp mirror session enable
 hrp track interface GigabitEthernet 0/0/1
 hrp track interface GigabitEthernet 0/0/3
#
interface GigabitEthernet 0/0/1
 ip address 10.2.1.1 255.255.255.0
#
interface GigabitEthernet 0/0/3
 ip address 10.3.1.1 255.255.255.0
#
interface GigabitEthernet 0/0/7
 ip address 10.10.0.2 255.255.255.0
#  
firewall zone trust
 set priority 85
 add interface GigabitEthernet 0/0/3
#  
firewall zone untrust
 set priority 5
 add interface GigabitEthernet 0/0/1
#  
firewall zone dmz
 set priority 50
 add interface GigabitEthernet0/0/7
#  
ospf 10
 area 0.0.0.0
  network 10.2.1.0 0.0.0.255
  network 10.3.1.0 0.0.0.255
#  
security-policy
 rule name policy_ospf_1
  source-zone local
  destination-zone trust
  destination-zone untrust
  service ospf
  action permit
 rule name policy_ospf_2
  source-zone trust
  source-zone untrust
  destination-zone local
  service ospf
  action permit
 rule name policy_sec
  source-zone trust
  destination-zone untrust
  source-address 10.3.2.0 24
  source-address 10.3.3.0 24
  action permit
Parent Topic: Hot Standby
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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