Managing Network Resources 3-21
Internet Protocol, Src: 10.1.3.4 10.1.3.4, Dst: 10.1.1.1 10.1.1.1 User Datagram Protocol, Src Port: 2222 2222, Dst Port: sip 5060
Session Initiation Protocol Request-Line: SUBSCRIBE sip:subscribe1.2.3.4:5060 SIP2.0
Message Header Via: SIP2.0UDP 2.3.4.5:9999;branch=1
From: sipp sip:sipp2.3.4.5;tag=1 To: sut sip:subscribe1.2.3.4:5060
Call-ID: 1-259232.3.4.5 Cseq: 1 SUBSCRIBE
Contact: sip:sipp2.3.4.5:9999 Max-Forwards: 70
Event: ua-profile Expires: 10
Content-Length: 0
No. Time Source Destination Protocol Info 3 3.430903 10.1.1.1 10.1.3.4 SIP Status: 200
OK
Internet Protocol, Src: 10.1.1.1 10.1.1.1, Dst: 10.1.3.4 10.1.3.4 User Datagram Protocol, Src Port: 42316 42316, Dst Port: 9999 9999
Session Initiation Protocol
3.9.3.2 maddr-Based Configuration
When the maddr parameter is present in the Via header, the response is sent to the IP address specified in the maddr rather than to the received IP address even when
SNAT is enabled. In the example below, the UAC specifies a maddr set to 2.3.4.5 in the Via header. Consequently the response from the SIP server makes it to the UAC.
Figure 3–9 maddr Sequence
The complete message trace from Figure 3–9
is shown in Example 3–9
below.
Example 3–9 Complete maddr Message Trace
No. Time Source Destination Protocol Info 1 1.425250 2.3.4.5 1.2.3.4 SIP Request: SUBSCRIBE
sip:subscribe1.2.3.4:5060
Internet Protocol, Src: 2.3.4.5 2.3.4.5, Dst: 1.2.3.4 1.2.3.4 User Datagram Protocol, Src Port: 9999 9999, Dst Port: sip 5060
Session Initiation Protocol
3-22 Oracle WebLogic SIP Server Container Administrators Guide
Request-Line: SUBSCRIBE sip:subscribe1.2.3.4:5060 SIP2.0 Message Header
Via: SIP2.0UDP 2.3.4.5:9999;maddr=2.3.4.5;branch=1 From: sipp sip:sipp2.3.4.5;tag=1
To: sut sip:subscribe1.2.3.4:5060 Call-ID: 1-259232.3.4.5
Cseq: 1 SUBSCRIBE Contact: sip:sipp2.3.4.5:9999
Max-Forwards: 70 Event: ua-profile
Expires: 10 Content-Length: 0
No. Time Source Destination Protocol Info 2 2.426250 10.1.3.4 10.1.1.1 SIP Request:
SUBSCRIBE sip:subscribe1.2.3.4:5060
Internet Protocol, Src: 10.1.3.4 10.1.3.4, Dst: 10.1.1.1 10.1.1.1 User Datagram Protocol, Src Port: 2222 2222, Dst Port: sip 5060
Session Initiation Protocol Request-Line: SUBSCRIBE sip:subscribe1.2.3.4:5060 SIP2.0
Message Header Via: SIP2.0UDP 2.3.4.5:9999;maddr=2.3.4.5;branch=1
From: sipp sip:sipp2.3.4.5;tag=1 To: sut sip:subscribe1.2.3.4:5060
Call-ID: 1-259232.3.4.5 Cseq: 1 SUBSCRIBE
Contact: sip:sipp2.3.4.5:9999 Max-Forwards: 70
Event: ua-profile Expires: 10
Content-Length: 0
No. Time Source Destination Protocol Info 3 3.430903 10.1.1.1 2.3.4.5 SIP Status: 200
OK
Internet Protocol, Src: 10.1.1.1 10.1.1.1, Dst: 2.3.4.5 2.3.4.5 User Datagram Protocol, Src Port: 42316 42316, Dst Port: 9999 9999
Session Initiation Protocol Status-Line: SIP2.0 200 OK
Message Header To: sut sip:subscribe1.2.3.4:5060;tag=82722c03
Content-Length: 0 Contact:
sip:app-12eomtm5h5f771.2.3.4:5060;transport=udp;wlsscid=1ae4479ac6ff71
3.9.3.3 rport-Based Configuration
