This section describes how to enable remote backup for Address Resolution Protocol (ARP) services.
Dual-device ARP hot backup prevents downlink traffic from being interrupted because the backup device does not learn ARP entries from a device on the user side during a master/backup VRRP switchover, which improves network reliability. After you establish a dual-device backup platform, enable remote backup for ARP services to ensure that ARP entries and host routing information are the same on the master and backup devices.
Perform the following steps on both the master and backup devices:
The system view is displayed.
A remote backup profile (RBP) is created, and the RBP view is displayed.
Remote backup is enabled for ARP services.
The configuration is committed.
Run the system-view command to enter the system view.
Run the interface interface-type interface-number [.subinterface-number ] command to enter the interface or sub-interface view.
Run the remote-backup-profile profile-name command to bind the RBP to the interface or sub-interface.
Run the commit command to commit the configuration.