Section: 20.4.2 RE-Auth-Answer Command
Content: The Re-Auth-Answer (RAA) command, defined in IETF RFC 6733 (DIAMETER BASE) [111], is indicated by the Command-Code set to 258 and the message flags’ ‘R’ bit clear, is sent in response to the RAR. The relevant AVPs that are of use for the SGmb interface are detailed in the ABNF description below. Other valid AVPs for this command are not used for SGmb purposes and should be ignored by the receiver or processed according to the relevant specifications. The bold marked AVPs in the message format indicate new optional AVPs for SGmb, or modified existing AVPs. Message Format: <RAA> ::= < Diameter Header: 258, PXY > < Session-Id > { Origin-Host } { Origin-Realm } [ Result-Code ] [ Experimental-Result ] [ MBMS-StartStop-Indication ] [ MBMS-GGSN-Address ] ; for unicast encapsulated user data [ MBMS-GGSN-Ipv6-Address ] ; for unicast encapsulated user data [ MBMS-User-Data-Mode-Indication ] [ MBMS-GW-UDP-Port] ; for unicast encapsulated user data [ Origin-State-Id ] [ Error-Message ] [ Error-Reporting-Host ] [ Failed-AVP ] * [ Redirected-Host ] [ Redirected-Host-Usage ] [ Redirected-Host-Cache-Time ] [ Proxy-Info ] * [ Supported-Features ] [ Restart-Counter ] For the MBMS Heartbeat procedure, RAA is sent by the BM-SC to the MBMS GW, or vice-versa. The RAA message shall contain the following AVPs: - the MBMS-StartStop-Indication AVP set to the value "heartbeat"; - the Restart-Counter AVP set to the local restart counter of the sender.