For the server to disconnect a user, the Disconnect-Request message must contain an attribute with a session ID. The Disconnect-Request message can contain an Acct-Session-Id (44) attribute or a Acct-Multi-Session-Id (50) attribute for the session ID or both. If both the Acct-Session-Id and Acct-Multi-Session-Id attributes are present in the request, the router uses both attributes. If the User-Name (1) attribute is also present in the request, the username and session ID are used to perform the disconnection. Authentication, authorization, and accounting (AAA) services handle the actual request.
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Note: To enable the disconnection of L2TP LAC user sessions, the RADIUS Disconnect-Request message must not include the Acct-Multi-Session-Id (50) attribute. The Acct-Multi-Session-Id attribute does not apply to LAC L2TP user sessions and including this attribute causes the disconnect operation to fail. |