SIP IPv6/IPv4 transition solutions - PowerPoint PPT Presentation

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SIP IPv6/IPv4 transition solutions

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SIP IPv6/IPv4 transition solutions Outline IPV6 transition problem NAT-PT + SIP ALG TZI gateway 3GPP IMS STUN-Based SIP Proxy IPV6 / IPV4 SIP ... – PowerPoint PPT presentation

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Title: SIP IPv6/IPv4 transition solutions


1
SIP IPv6/IPv4 transition solutions
  • ??? ???

2
Outline
  • IPV6 transition problem
  • NAT-PT SIP ALG
  • TZI gateway
  • 3GPP IMS
  • STUN-Based SIP Proxy

3
IPV6 / IPV4 SIP?????
IPv4
IPv6
NAT-PT
IPv4 SIP_UA
?? 140.123.1.1
IP Mapping table
IPv6 SIP_UA
INVITE XXX_at_example.com With IPv4
SDP A140.123.1.1
??? IPv4 ??
4
NAT-PT SIP ALG
IPv4
IPv6
DUAL-Stack Translator
140.123.1.1
FF1
SIP ALG
IPv4 SIP UA
IP Mapping table
IPv6 SIP UA
RTP (ipv4)
RTP (ipv6)
Media session Translator
INVITE XXX_at_example.com With IPv4
SDP A140.123.1.1
INVITE XXX_at_example.com With IPv4 SDP AFEAA11
SIP_ALG Modify SIP/SDP Message
5
TZI Gateway
  • 6WINIT Project http//www.6winit.org
  • The TZI-Gateway is a application layer gateway
    for signalling communication and media streams
    for use in heterogeneous IPv4/IPv6 networks
  • Determine IP version of caller based on received
    INVITE message

6
TZI Gateway 6WINIT Project http//www.6winit.org

7
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8
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9
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10
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11
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12
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13
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14
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15
(No Transcript)
16
3GPP-IMS Scenario
17
3GPP-IMS Scenario
  • 3GPP IPv6 endpoint
  • IPv6-only but IPv4-aware
  • SIP Edge Proxy
  • Logical proxy entity
  • Dual-Stack
  • Manages pools of IPv6 and IPv4 addresses for one
    or multiple IPAPMs
  • IP Address and Port Mapper (IPAPM)
  • IP translation (comparable to SIIT)
  • Manages address/port bindings
  • Controlled by edge proxy
  • Control protocol
  • To be defined
  • MEGACO, MIDCOM

18
  • ??IPv6/IPv4 SIP solution
  • ???NAT-PT , Gateway
  • SIP Proxy ??NAT-PT?? (IP Mapping)
  • ??STUN ???IPV6/IPV4?????NAT-PT ?? SIP ?????

19
STUN - Simple Traversal of UDP Through NATs
Internet (Public Network)
Private Network
NAT
192.168.1.1
Packet
STUN server
S 192.168.1.1
S140.123.1.1
D140.123.1.1
IP 140.123.1.1
??????IP? 140.123.1.1
IP mapping table
140.123.1.xx
20
STUN-based SIP Proxy
IPv4
IPv6
NAT-PT
SIP Proxy
SIP Proxy
IPv4 SIP_UA
Dual stack RTP Relay
IP Mapping table
IPv6 SIP_UA
Dual stack RTP Relay
21
  • STUN-based SIP Proxy
  • Dual stack
  • Change SDP
  • RTP Relay
  • STUN

22
IPV4 - SIPUA
SIP Proxy 01
NAT-PT
SIP Proxy 02
IPV6 - SIPUA
INVITE
STUN request
STUN response
INVITE
INVITE
OK
STUN request
STUN response
OK
OK
RTP
RTP
RTP
RTP
Relay
Relay
23
140.123.1.2
Ipv6_at_aaa.bb
140.123.1.1
IPV4 - SIPUA
SIP Proxy 01
NAT-PT
SIP Proxy 02
IPV6 - SIPUA
FF2
FF1
INVITE
INVITE ipv6_at_aaa.bb SDP 140.123.1.1
24
140.123.1.2
140.123.1.1
IPV4 - SIPUA
SIP Proxy 01
NAT-PT
SIP Proxy 02
IPV6 - SIPUA
FF2
FF1
INVITE
S140.123.1.2
STUN request
S140.123.1.2
STUN response
IP AA1
S AA1
25
140.123.1.2
140.123.1.1
IPV4 - SIPUA
SIP Proxy 01
NAT-PT
SIP Proxy 02
IPV6 - SIPUA
FF2
FF1
INVITE
S140.123.1.2
STUN request
STUN response
IP AA1
INVITE
INVITE
INVITE ipv6_at_aaa.bb SDP AA1
INVITE ipv6_at_aaa.bb SDP FF2
26
140.123.1.2
140.123.1.1
IPV4 - SIPUA
SIP Proxy 01
NAT-PT
SIP Proxy 02
IPV6 - SIPUA
FF2
FF1
INVITE
S140.123.1.2
STUN request
STUN response
IP AA1
INVITE
INVITE ipv6_at_aaa.bb SDP AA1
INVITE
INVITE ipv6_at_aaa.bb SDP FF2
OK
200 OK SDP FF1
27
140.123.1.2
140.123.1.1
IPV4 - SIPUA
SIP Proxy 01
NAT-PT
SIP Proxy 02
IPV6 - SIPUA
FF2
FF1
INVITE
S140.123.1.2
STUN request
STUN response
IP AA1
INVITE
INVITE ipv6_at_aaa.bb SDP AA1
INVITE
INVITE ipv6_at_aaa.bb SDP FF2
OK
STUN request
200 OK SDP FF1
SFF2
STUN response
IP 163.1.1.1
28
140.123.1.2
140.123.1.1
IPV4 - SIPUA
SIP Proxy 01
NAT-PT
SIP Proxy 02
IPV6 - SIPUA
FF2
FF1
INVITE
S140.123.1.2
STUN request
STUN response
IP AA1
INVITE
INVITE ipv6_at_aaa.bb SDP AA1
INVITE
INVITE ipv6_at_aaa.bb SDP FF2
OK
STUN request
200 OK SDP FF1
SFF2
STUN response
IP 163.1.1.1
OK
OK
200 OK SDP 163.1.1.1
200 OK SDP 140.123.1.2
29
140.123.1.2
140.123.1.1
IPV4 - SIPUA
SIP Proxy 01
NAT-PT
SIP Proxy 02
IPV6 - SIPUA
FF2
FF1
INVITE
S140.123.1.2
STUN request
STUN response
IP AA1
INVITE
INVITE ipv6_at_aaa.bb SDP AA1
INVITE
INVITE ipv6_at_aaa.bb SDP FF2
OK
STUN request
200 OK SDP FF1
SFF2
STUN response
IP 163.1.1.1
OK
OK
200 OK SDP 163.1.1.1
200 OK SDP 140.123.1.2
ACK
30
140.123.1.2
140.123.1.1
IPV4 - SIPUA
SIP Proxy 01
NAT-PT
SIP Proxy 02
IPV6 - SIPUA
FF2
FF1
INVITE
S140.123.1.2
STUN request
STUN response
IP AA1
INVITE
INVITE ipv6_at_aaa.bb SDP AA1
INVITE
INVITE ipv6_at_aaa.bb SDP FF2
OK
STUN request
200 OK SDP FF1
SFF2
STUN response
IP 163.1.1.1
OK
OK
200 OK SDP 163.1.1.1
200 OK SDP 140.123.1.2
ACK
RTP
RTP
RTP
RTP
Relay
Relay
31
??
  • Modify Gateway
  • NAT-PTSIP ALG
  • TZI Gateway
  • 3G IMS
  • ??????????????NAT-PT?,??SIP Proxy
    STUN??SIP?IPV6/IPV4?????
  • NAT-PT???????
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