RADIUS attribute from rfc2866
This attribute indicates how the session was terminated, and can only be present in Accounting-Request records where the Acct- Status-Type is set to Stop. A summary of the Acct-Terminate-Cause attribute format is shown below. The fields are transmitted from left to right. 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Length | Value +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Value (cont) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+Type 49 for Acct-Terminate-Cause Length 6 Value The Value field is four octets, containing an integer specifying the cause of session termination, as follows: 1 User Request 2 Lost Carrier 3 Lost Service 4 Idle Timeout 5 Session Timeout 6 Admin Reset 7 Admin Reboot 8 Port Error 9 NAS Error 10 NAS Request 11 NAS Reboot 12 Port Unneeded 13 Port Preempted 14 Port Suspended 15 Service Unavailable 16 Callback 17 User Error 18 Host Request The termination causes are as follows: User Request User requested termination of service, for example with LCP Terminate or by logging out. Lost Carrier DCD was dropped on the port. Lost Service Service can no longer be provided; for example, user's connection to a host was interrupted. Idle Timeout Idle timer expired. Session Timeout Maximum session length timer expired. Admin Reset Administrator reset the port or session.Admin Reboot Administrator is ending service on the NAS, for example prior to rebooting the NAS. Port Error NAS detected an error on the port which required ending the session. NAS Error NAS detected some error (other than on the port) which required ending the session. NAS Request NAS ended session for a non-error reason not otherwise listed here. NAS Reboot The NAS ended the session in order to reboot non-administratively ("crash"). Port Unneeded NAS ended session because resource usage fell below low-water mark (for example, if a bandwidth-on-demand algorithm decided that the port was no longer needed). Port Preempted NAS ended session in order to allocate the port to a higher priority use. Port Suspended NAS ended session to suspend a virtual session. Service Unavailable NAS was unable to provide requested service. Callback NAS is terminating current session in order to perform callback for a new session. User Error Input from user is in error, causing termination of session. Host Request Login Host terminated session normally.
FreeRADIUS Vendor-Specific dictionary values:
1 - User-Request 2 - Lost-Carrier 3 - Lost-Service 4 - Idle-Timeout 5 - Session-Timeout 6 - Admin-Reset 7 - Admin-Reboot 8 - Port-Error 9 - NAS-Error 10 - NAS-Request 11 - NAS-Reboot 12 - Port-Unneeded 13 - Port-Preempted 14 - Port-Suspended 15 - Service-Unavailable 16 - Callback 17 - User-Error 18 - Host-Request 19 - Supplicant-Restart 20 - Reauthentication-Failure 21 - Port-Reinit 22 - Port-Disabled