Huawei Wireless Access Controllers V200R003C00 Web Platform Configuration Guide-Example for Configuring VRRP to Implement AC Hot Standby

18.14 Example for Configuring VRRP to Implement AC Hot Standby

Networking Requirements

As shown in Figure 18-14, AC1 and AC2 are connected to APs through the access switch.

STAs use AC1 as the default gateway to access the Internet. Service information on AC1 can be backed up to AC2 in real time or in batches.
AC1 assigns IP addresses to STAs on the WLAN so that the STAs can go online. It is required that user services not be interrupted when AC1 is faulty.

Figure 18-14 Networking diagram

Data Preparation

Management VLAN for the AP	VLAN 100
Service VLAN for STAs	VLAN 101
DHCP server	AC functions as the DHCP server to assign IP addresses to APs and STAs.
IP address pool for the AP	192.168.100.4 to 192.168.100.254/24
IP address pool for STAs	192.168.101.4 to 192.168.101.254/24
AC ID/Country code	0/CN
Source interface of AC1	VLANIF 100: 192.168.100.1/24
Source interface of AC2	VLANIF 100: 192.168.100.2/24
Virtual IP address of the management VRRP group	192.168.100.3/24
Virtual IP address of the member VRRP group	192.168.101.3/24
Gateway for the AP	VLANIF 100: 192.168.100.3/24
Gateway for STAs	VLANIF 101: 192.168.101.3/24
WLAN radio profile	Name: radio WMM profile: wmm
WLAN service set	Name: huawei SSID: huawei WLAN ESS interface: WLAN-ESS1 Security profile: security Traffic profile: traffic Data forwarding mode: direct forwarding

Configuration Roadmap

The configuration roadmap is as follows:

Set up connections between the AP, AC, and other network devices.
Configure a VRRP group on AC1 and AC2. Configure a high priority for AC1 as the active device to forward traffic, and a low priority for AC2 as the standby device.
Configure the hot standby (HSB) function on the ACs so that service information on AC1 is backed up to AC2 in real time or in batches, ensuring seamless service switchover from the active device to the standby device.
Configure basic WLAN services so that users can connect to the Internet through the WLAN.
Enable HSB on AC2.

Procedure

Configure the access switch.
# Add GE0/0/1, GE0/0/2, and GE0/0/3 on the access switch to VLAN 100 and VLAN 101. The default VLAN of GE0/0/1 is VLAN 100.
Configure VLAN 100, VLAN 101, VLAN 102, VLANIF 100, VLANIF 101, and VLANIF 102 on AC1.
- Create VLANs.
  # Choose Interface Management > VLAN > VLAN. The VLAN page is displayed.
  # Click Create to create VLAN 100. Add GE0/0/1 to VLAN 100 in tagged mode.
  
  # Create VLAN 101 and VLAN 102 in the same way. Add GE0/0/1 to VLAN 101 and GE0/0/2 to VLAN 102 in tagged mode.
- Configure VLANIF interfaces.
  # Choose Interface Management > VLAN > VLANIF. The VLANIF page is displayed.
  # Click Create to create VLANIF 100. Assign the IP address 192.168.100.1/24 to VLANIF 100.
  
  # Create VLANIF 101 and VLANIF 102 in the same way. Assign the IP address 192.168.101.1/24 to VLANIF 101 and 192.168.102.1/24 to VLANIF 102.
Configure VLAN 100, VLAN 101, VLAN 102, VLANIF 100, VLANIF 101, and VLANIF 102 on AC2.
- Create VLAN 100, VLAN 101, and VLAN 102. Add GE0/0/1 to VLAN 100 and VLAN 101, and GE0/0/2 to VLAN 102 in tagged mode. For details, see 2.a.
- Create VLANIF 100, VLANIF 101, and VLANIF 102, and assign IP addresses 192.168.100.2/24, 192.168.101.2/24, and 192.168.102.2/24 to VLANIF 100, VLANIF 101, and VLANIF 102 respectively. For details, see 2.b.
Configure VRRP on AC1 to implement AC hot standby.
- Configure VRRP groups.
  # Choose Device Management > Backup Configuration > VRRP. The VRRP page is displayed.
  # Click Create to create a management VRRP group.
  
  # Click Create to create a backup VRRP group.
- Configure the HSB service and group.
  # Choose Device Management > Backup Configuration > HSB. The HSB page is displayed.
  # Click Create under Channel List to create an HSB service.
  
  # Click Create under Group List to create an HSB group.
- Configure the HSB function.
  # Choose Device Management > Backup Configuration > Backup Configuration. The Backup Configuration page is displayed. Configure the HSB function.
  
  # Click Apply.
Configure VRRP on AC2 to implement AC hot standby.
- Configure VRRP groups.
  # Choose Device Management > Backup Configuration > VRRP. The VRRP page is displayed.
  # Click Create to create a management VRRP group.
  
  # Click Create to create a backup VRRP group.
- Configure the HSB service and group.
  # Choose Device Management > Backup Configuration > HSB. The HSB page is displayed.
  # Click Create under Channel List to create an HSB service.
  
  # Click Create under Group List to create an HSB group.
Configure APs to go online on AC1.
- Choose Configuration Wizard > Configuration Wizard > AP Online Configuration Wizard. The AP Online Configuration Wizard page is displayed. Ethernet interfaces have been configured in 2.a. Click Next.
- Virtual interfaces have been configured in 2.b. Click Next.
- Configure DHCP.
  # Click Create on the Configure DHCP page. The Create IP Pool page is displayed.
  # Configure an IP address pool for VLANIF 100.
  
  # Configure an IP address pool for VLANIF 101 in the same way.
  # Click Next.
- Configure the AC.
- Confirm the settings.
  On the Confirm Settings page, confirm that the settings are correct and then click Finish.
Configure the WLAN service on AC1.
- Choose Configuration Wizard > Configuration Wizard > WLAN Configuration Wizard. The WLAN Configuration Wizard page is displayed.
- Select Common WLAN Service and click Next.
- Add the AP.
  # Click Create on the Configure AP page. The Create AP page is displayed.
  # Set AP type to AP6010DN-AGN and MAC address to 60de-4476-e360 on the Create AP page to add the AP.
  
  Select the AP and click Next.
- Configure the radio.
  # Select 2.4 GHz.
  # Create a radio profile named radio. Create a WMM profile named wmm and use the default settings in the profile.
  
  # Click Next.
- Configure the WLAN service.
  # On the Configure WLAN Service page, click Create to create a service set.
  
  # Create a traffic profile named traffic.
  
  # Create a security profile named security.
  
  # Create an ESS interface.
  
  # Select the created security profile, traffic profile, and ESS interface to complete the service set configuration.
  
  # Click OK and then click Next.
Configure the AC source IP address on AC1.
# Choose Device Management > AC Management > AC Configuration, and change the AC source IP address to the virtual IP address.
Add APs offline, configure the WLAN service, and configure the AC source IP address on AC2. The configurations of AC2 are the same as those of AC1. The difference is that IP addresses of VLANIF 100 and VLANIF 101 are 192.168.100.2/24 and 192.168.101.2/24 respectively on AC2. For details, see 6, 7, and 8.
Enable HSB on AC2.
# Choose Device Management > Backup Configuration > Backup Configuration. The Backup Configuration page is displayed. Configure the HSB function.

# Click Apply.
Verify the configuration.
- The WLAN with the SSID huawei is available for the STA.
- The STA can associate with the WLAN and obtain an IP address 192.168.101.x/24 and its gateway address is 192.168.101.1.
- Choose Terminal Management > Terminal Management > STA Management. You can see that the STA goes online successfully and obtains an IP address.
- When the switch detects a fault on the link connected to AC1, it instructs AC2 to take the active role and provide services for STAs. User services are not interrupted.