Fault tolerance for authentication, authorization, and accounting (AAA) functionality

• Main Authors: Raison, Paul, Romanov, Aleksey
• Format: Patent
• Language: English
• Published: 10.07.2018
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

An example network access device (NAD) includes a network interface to send and receive packets with an authentication, authorization, and accounting (AAA) server, and a subscriber management service unit (SMSU). The SMSU is configured to, responsive to determining that the AAA server is not reachable by the NAD, send a message from the NAD to the AAA server using the network interface, wherein the message directs the AAA server to send a discovery request message to the NAD, receive the discovery request message from the AAA server using the network interface, wherein the discovery request message includes a request for information about a plurality of subscriber sessions, and generate a discovery response message that includes information about at least a portion of the plurality of subscriber sessions, and send the discovery response message to the network access device using the network interface.