Section: 16a.4.2 AAA Command
Content: The AAA command, defined in Diameter NASREQ (IETF RFC 7155 [120]), is indicated by the Command-Code field set to 265 and the ‘R’ bit cleared in the Command Flags field., It is sent by the Diameter server to the GGSN/P-GW in response to the AAR command. The relevant AVPs that are of use for the Gi/Sgi interface are detailed in the ABNF description below. Other valid AVPs for this command are not used for Gi/Sgi purposes and should be ignored by the receiver or processed according to the relevant specifications. The "Tunneling" AVP may include the "Tunnel-Type" with value 3 to represent L2TP tunnel type, "Tunnel-Medium-Type" and "Tunnel-Server-Endpoint" AVPs. If more than one set of these "Tunneling" AVPs are provided, the optional "Tunnel-Preference" AVP may be provided in each set to identify the relative preference. The Tunnel-Password AVP may be used to authenticate to a remote server. NOTE: The other optional AVPs within the "Tunneling" AVPs not listed in the above description, can be referred to the IETF RFC 7155 [120] with implementation specific. The bold marked AVPs in the message format indicate optional AVPs for Gi/Sgi, or modified existing AVPs. Message Format: <AA-Answer> ::= < Diameter Header: 265, PXY > < Session-Id > { Auth-Application-Id } { Auth-Request-Type } { Result-Code } { Origin-Host } { Origin-Realm } [ User-Name ] [ Service-Type ] * [ Class ] [ Acct-Interim-Interval ] [ Error-Message ] [ Error-Reporting-Host ] [ Failed-AVP ] [ Idle-Timeout ] [ Authorization-Lifetime ] [ Auth-Grace-Period ] [ Auth-Session-State ] [ Re-Auth-Request-Type ] [ Multi-Round-Time-Out ] [ Session-Timeout ] * [ Reply-Message ] [ Origin-State-Id ] * [ Filter-Id ] [ Port-Limit ] [ Prompt ] [ Callback-Id ] [ Callback-Number ] * [ Framed-Compression ] [ Framed-Interface-Id ] [ Framed-IP-Address ] * [ Framed-IPv6-Prefix ] [ Framed-IPv6-Pool ] * [ Framed-IPv6-Route ] * [ Delegated-IPv6-Prefix ] [ Framed-IP-Netmask ] * [ Framed-Route ] [ Framed-Pool ] [ Framed-IPX-Network ] [ Framed-MTU ] [ Framed-Protocol ] [ Framed-Routing ] * [ Login-IP-Host ] * [ Login-IPv6-Host ] [ Login-LAT-Group ] [ Login-LAT-Node ] [ Login-LAT-Port ] [ Login-LAT-Service ] [ Login-Service ] [ Login-TCP-Port ] * [ NAS-Filter-Rule ] * [ QoS-Filter-Rule ] * [ Tunneling ] * [ Redirect-Host ] [ Redirect-Host-Usage ] [ Redirect-Max-Cache-Time ] * [ Proxy-Info ] [ 3GPP-IPv6-DNS-Servers ] * [ External-Identifier] * [ AVP ]