Abstract: An address distribution method is disclosed by the present invention, in which two Broadband Remote Access Servers (BRAS) which are mutually backup devices respectively occupy part of the address resources in a shared address pool, and the method includes: when detecting a user online, a BRAS selecting an address from the corresponding part of address resources in the shared address pool and distributing the address to the user; and the BRAS sending a notification message to the backup device, and informing the backup device of the address occupied by the user. A BRAS and an address distribution system is further disclosed by the present invention, and the problem of address collision generated when a pair of BRASs which are mutually backup devices distribute the addresses to their respective user in the dual-server hot backup scenario is solved by the method, device and system of the present invention.

Abstract: The present invention discloses a method for address management, at least one backup group exists between a broadband remote access server (BRAS) and a backup device, and the method includes: when the BRAS receives an access request of a user, detecting whether there is an idle address in a backup group accessed by the user; if there is no idle address in the backup group accessed by the user, then the BRAS assigning a new logical segment to the backup group, wherein the logical segment contains at least one address; and the BRAS selecting an address from the new logical segment and assigning the address to the user. The present invention also discloses an apparatus and system for address management. The method, apparatus and system of the present invention realize the flexible management of the sharing address pool, and solve the problem of a waste of resources.

Abstract: A method and network system for implementing user port locating in multi-machine backup scenario of broadband remote access server (BRAS) are disclosed. The method comprises: configuring master port in each backup group as user access port and synchronizing information of taking the maser port as user access port to the backup port in the backup group; a remote authentication dial in user service (RADIUS) server configuring access port information, which is set as the master port in the backup group, for the user; processing master-backup switch if the master port is abnormal and the user accessing the line from the corresponding backup port; the BRAS corresponding to the backup port encapsulating the authentication message including the access line information about digital subscriber line access multiplexer of the user access and taking the maser port as the user access port, and sending the authentication message to the RADIUS server.

Abstract: The present invention discloses a method for address management, at least one backup group exists between a broadband remote access server (BRAS) and a backup device, and the method includes: when the BRAS receives an access request of a user, detecting whether there is an idle address in a backup group accessed by the user; if there is no idle address in the backup group accessed by the user, then the BRAS assigning a new logical segment to the backup group, wherein the logical segment contains at least one address; and the BRAS selecting an address from the new logical segment and assigning the address to the user. The present invention also discloses an apparatus and system for address management. The method, apparatus and system of the present invention realize the flexible management of the sharing address pool, and solve the problem of a waste of resources.

Abstract: An address distribution method is disclosed by the present invention, in which two Broadband Remote Access Servers (BRAS) which are mutually backup devices respectively occupy part of the address resources in a shared address pool, and the method includes: when detecting a user online, a BRAS selecting an address from the corresponding part of address resources in the shared address pool and distributing the address to the user; and the BRAS sending a notification message to the backup device, and informing the backup device of the address occupied by the user. A BRAS and an address distribution system is further disclosed by the present invention, and the problem of address collision generated when a pair of BRASs which are mutually backup devices distribute the addresses to their respective user in the dual-server hot backup scenario is solved by the method, device and system of the present invention.

Abstract: A method and network system for implementing user port locating in multi-machine backup scenario of broadband remote access server (BRAS) are disclosed. The method comprises: configuring master port in each backup group as user access port and synchronizing information of taking the maser port as user access port to the backup port in the backup group; a remote authentication dial in user service (RADIUS) server configuring access port information, which is set as the master port in the backup group, for the user; processing master-backup switch if the master port is abnormal and the user accessing the line from the corresponding backup port; the BRAS corresponding to the backup port encapsulating the authentication message including the access line information about digital subscriber line access multiplexer of the user access and taking the maser port as the user access port, and sending the authentication message to the RADIUS server.