H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 42)

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Stateful failover configuration task list
To implement stateful failover on two devices, you need to perform the following configurations:
• Routing configuration. Configure VRRP on the devices and the uplink/downlink devices to make
sure that the traffic can automatically switch to the other device when a device fails.
• Service backup configuration, which can implement real-time service backup between the two
devices.
This configuration guide only introduces the service backup configuration.
Complete the following tasks to configure stateful failover:
Task Remarks
Enabling stateful failover Required.
Configuring the backup VLAN Required.
Service module related configurations
Optional.
For a device providing DHCP server services, it
automatically backs up related information to the backup
device after you enable stateful failover and configure
failover interfaces.
For a device providing portal services, you must perform
further configurations on the device before it can
automatically back up portal service information to the
backup device. For more information, see Security
Configuration Guide.
Enabling stateful failover
When you enable stateful failover with the dhbk enable backup-type { dissymmetric-path |
symmetric-path } command:
• If you specify the dissymmetric-path keyword, the two devices operate in the active/active mode.
Sessions enter and leave the internal network through different devices to achieve load sharing.
• If you specify the symmetric-path keyword, the two devices operate in the active/standby mode.
Sessions enter and leave the internal network through one device.
Select a keyword based on the network environment and resources, and specify the same keyword for
both devices.
To enable stateful failover:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enable stateful failover in a
specified mode.
dhbk enable backup-type
{ dissymmetric-path |
symmetric-path } Disabled by default.