Overview of Multi-Device Backup

In user information multi-device backup, a VRRP group can be created to achieve BRAS user information backup. In this manner, services can be flexibly controlled and managed.

Currently, information about IPoE dynamic users, PPPoE users, web authentication users, and static users can be backed up on Ethernet sub-interfaces, QinQ sub-interfaces, and Eth-Trunk interfaces whose members reside on the same board.

Information to be backed up and backup functions are as follows:

• Basic user information, including the user MAC address, session ID, IP address, user name, authentication information, and Option 60. Backing up such information ensures that users do not need to re-dial up for authentication.
• Accounting information, including the accounting ID, traffic information, and duration. Backing up such information ensures that Service Detailed Records (SDRs) are not lost after a master/backup BRAS switchover.
• QoS information, including user priorities and QoS profiles. Backing up such information ensures that binding users can go online at a new location.
• Physical location information, including the inner and outer VLAN IDs and Option 82. Backing up such information ensures that QoS scheduling remains unchanged before and after a master/backup BRAS switchover.