How IPv6 Will Kill Telecom - And What We Need To Do About It
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How IPv6 Will Kill Telecom - And What We Need To Do About It

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How badly will IPv6 screw up telecommunications? Where are the areas of telecom that will see the greatest impact? And what can be done to fix it? ...

How badly will IPv6 screw up telecommunications? Where are the areas of telecom that will see the greatest impact? And what can be done to fix it?

How badly will IPv6 screw up telecommunications? Where are the areas of telecom that will see the greatest impact? And what can be done to fix it?

With the recent buzz around World IPv6 Day and the exhaustion of top-level IPv4 address allocations, organizations are starting to seriously look at exactly what is involved with migrating to IPv6... and asking questions about what this means for all their VoIP and Unified Communications systems. Given that the reality is that a "IPv6-only" world is a distant future, questions are particularly being asked around how those telecommunications systems will work during the transition period from IPv4 to IPv6.

In this session, Voxeo's Dan York will explore where IPv6 and telecom play nice together and where there are serious minefields that may restrict telecom from working over IPv6

In this session, Voxeo's Dan York will explore where IPv6 and telecom play nice together and where there are serious minefields that may restrict telecom from working over IPv6

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  • 1. How IPv6 Will Kill Telecom – 
And What We Need To Do About It"June 27, 2011! Dan York! Dir. of Conversations! twitter.com/danyork! twitter.com/voxeo! dyork@voxeo.com!
  • 2. Dan York! www.danyork.com© Voxeo Corporation
  • 3. © Voxeo Corporation
  • 4. Why IPv6?!
  • 5. © Voxeo Corporation
  • 6. © Voxeo Corporation
  • 7. © Voxeo Corporation
  • 8. In The Beginning...! 192.168.20.12© Voxeo Corporation
  • 9. Mobility! www.flickr.com/photos/kapungo/3396823518/© Voxeo Corporation
  • 10. A Plethora of Portable Platforms! www.flickr.com/photos/clonedmilkmen/5111779335/© Voxeo Corporation
  • 11. Internet of Things! www.flickr.com/photos/dmje/5159177886/© Voxeo Corporation
  • 12. Internet of Things!© Voxeo Corporation
  • 13. Internet of Things!© Voxeo Corporation
  • 14. EVERYTHING over IP© Voxeo Corporation
  • 15. How IP Address Allocation Works! Regional Internet Registries (RIRs) Internet Service Providers (ISPs) You© Voxeo Corporation
  • 16. Global IPv4 Disparity !© Voxeo Corporation
  • 17. Oops... as of Feb 1, 2011...! All Gone! Regional Internet Registries (RIRs) Internet Service Providers (ISPs) You© Voxeo Corporation
  • 18. Solutions?!
  • 19. IPv4 Marketplace!© Voxeo Corporation
  • 20. Prolonging IPv4 - NAT Today! NAT   Public  IP   Private  IP   Addresses   PC Home Internet Firewall Firewall Firewall IP ISP   Phone Home  © Voxeo Corporation
  • 21. Carrier Grade NAT (a.k.a. LSN)! NAT   Public  IP   Private  IP   Addresses   PC Home Internet Firewall Firewall Firewall IP ISP   Phone Home  © Voxeo Corporation
  • 22. Old NATs Never Die...! NAT   NAT   Public  IP   Private  IP   Private  IP   Addresses   Addresses   PC Home Internet Firewall Firewall Firewall IP ISP   Phone Home  © Voxeo Corporation
  • 23. The Problem?! SIP NAT© Voxeo Corporation
  • 24. Oh, and by the way... ! (sorry... we still have NAT-like networks with IPv6...)© Voxeo Corporation
  • 25. And then there is... !© Voxeo Corporation
  • 26. Challenge #1 For VoIP and UC Apps:! How Many Digits Is That?!
  • 27. See the problem?!© Voxeo Corporation
  • 28. See the problem?!© Voxeo Corporation
  • 29. IPv4! 192.168.20.12© Voxeo Corporation
  • 30. IPv6!2001:db8:34a5:23:aa1f:12f4:9009:1234© Voxeo Corporation
  • 31. IPv6 Address Compression!2001:db8:34a5:0:0:0:0:12001:db8:34a5::1(oh, and they aren’t case-sensitive)© Voxeo Corporation
  • 32. IPv6 Address Compression! 127.0.0.1 ::1 0.0.0.0 ::© Voxeo Corporation
  • 33. DNS is your friend!© Voxeo Corporation
  • 34. Challenge #2 For VoIP and UC Apps:! Whereʼs The Nearest Port?!
  • 35. IPv4 Port Numbers! 192.168.20.12:5060© Voxeo Corporation
  • 36. IPv4 Port Numbers in IPv6?! 192.168.20.12:5060 2001:db8:34a5::1234:5060© Voxeo Corporation
  • 37. IPv6 Port Numbers! [2001:db8:34a5::1234]:5060© Voxeo Corporation
  • 38. IPv6 addressing!http://[2001:db8:34a5::1234]/index.html http://[2001:db8:34a5::1234]:8080 sip:dan@[2001:db8:34a5::1234] sip:dan@[2001:db8:34a5::1234]:5060© Voxeo Corporation
  • 39. DNS is your friend!© Voxeo Corporation
  • 40. Challenge #3 For VoIP and UC Apps:! Whatʼs the Address?!
  • 41. IPv6 – Multiple Addresses / Interface! 192.168.20.12 2001:db8:34a5:92:21c:a5ff:fe12:3a80 (global) fe80::21c:a5ff:fe12:3a80 (link-local)© Voxeo Corporation
  • 42. IPv6 – Neighbor Discovery! No More DHCP For Address Assignment (well, unless you want it) Router Advertisements Also Replaces ARP© Voxeo Corporation
  • 43. IPv6 – Address Creation! Router Advertisement 2001:db8:34a5:92:21c:a5ff:fe12:3a80 Autoconfiguration from Ethernet Address© Voxeo Corporation
  • 44. DNS is your friend!© Voxeo Corporation
  • 45. Challenge #4 For VoIP and UC Apps:!How Many Aʼs Do You Want With That?!
  • 46. IPv4 and DNS!example.com 3600 IN A 192.168.20.12© Voxeo Corporation
  • 47. IPv6 and DNS!example.com 3600 IN A 192.168.20.12example.com 3600 IN AAAA 2001:db8:34a5::1234© Voxeo Corporation
  • 48. IPv6 DNS Fun! What if DNS gives a AAAA.... but your system doesn’t have “real” IPv6 connectivity? (You can retrieve AAAA records over IPv4!)© Voxeo Corporation
  • 49. UNhappy Eyeballs! DNS Svrexample.com A 192.168.20.12example.com AAAA 2001:db8:34a5::1234 AAAA ? You (a long time later...) A ?© Voxeo Corporation
  • 50. Happy Eyeballs! DNS Svrexample.com A 192.168.20.12example.com AAAA 2001:db8:34a5::1234 AAAA ? A You ? (sent at same time; whichever replies first wins)© Voxeo Corporation
  • 51. Happy Eyeballs! draft-ietf-v6ops-happy-eyeballs© Voxeo Corporation
  • 52. Challenge #5 For VoIP and UC Apps:! What Lies Buried Within?!
  • 53. How Do You Store IP Addresses?! Memory? Databases? Config Files? Room for two? (or more?)© Voxeo Corporation
  • 54. Config Files!<category name="SIP"> <item name="Server1">127.0.0.1:5060 </item></category>© Voxeo Corporation
  • 55. © Voxeo Corporation
  • 56. IPv6 Works Fine!! Linphone – http://www.linphone.org Open source, free and available for Linux, Windows and MacOS X© Voxeo Corporation
  • 57. Linphone and IPv6! Linphone – http://www.linphone.org Open source, free and available for Linux, Windows and MacOS X© Voxeo Corporation
  • 58. RFC 6157! RFC 6157 “IPv6 Transition in the Session Initiation Protocol (SIP)” tools.ietf.org/html/rfc6157© Voxeo Corporation
  • 59. SIP Architecture! SIP SIP Proxy Proxy A SIP B SIP SIP Alice Bob Media (RTP, MSRP, etc.)© Voxeo Corporation
  • 60. SIP Reality! SIP SIP SIP SIP SIP Proxy Proxy Proxy Proxy Proxy A SIP B SIP C SIP D SIP N SIP Internet (or WAN) SIP Media Media Alice Proxy Proxy Bob Media A Media B Media© Voxeo Corporation
  • 61. “SIP” = Multiple Protocols! SIP SDP RTP© Voxeo Corporation
  • 62. IPv4/IPv6 Fun!  Communicating between IPv4 client and IPv6 client through a proxy •  Record-Route: <sip:2001:db8::1;lr> •  Record-Route: <sip:192.0.2.1;lr>  Mixed communication across a path of proxies  Mixed communication: IPv6 for SIP, IPv4 for media© Voxeo Corporation
  • 63. IPv6 and SDP!  Only allows a single IP address per media stream (“c=“ parameter) •  c=IN IP4 192.168.20.12 •  c=IN IP6 2001:db8:34a5::1234  Multiple proposals for additional SDP parameters •  ex. ANAT - RFC 4091 & 4092 – now deprecated by ICE  The IETF way forward is ICE – RFC 5245© Voxeo Corporation
  • 64. NAT, NAT, NAT... ! STUN, TURN, ICE (RFC 5245)© Voxeo Corporation
  • 65. Discovery of SIP Servers!  User agents need to find SIP servers/proxies  DHCPv6 •  SIP Options in RFC 3319  DNS SRV, NAPTR and AAAA Records (RFC 3263)© Voxeo Corporation
  • 66. Other IPv6 Considerations!  Other interfaces •  Web and management systems •  Logging •  APIs  Custom SIP headers  Multi-vendor interoperability  SBC and firewall support for SIP over IPv6© Voxeo Corporation
  • 67. © Voxeo Corporation
  • 68. SIP Forum “IPv6” Mailing List! sipforum.org/mailman/listinfo/ipv6© Voxeo Corporation
  • 69. SIPit Test Events! sipit.net SIPit 28: “68% of the implementations present supported IPv6.”© Voxeo Corporation
  • 70. Get Started With IPv6... ! http://bit.ly/voxeoipv6© Voxeo Corporation
  • 71. Set up Test Lab or your Home Office! http://tunnelbroker.net www.test-ipv6.com www.ipv6-test.com© Voxeo Corporation
  • 72. SIP Softphones Supporting IPv6!  Linphone •  www.linphone.org  Jitsi (formerly SIP Communicator) •  www.jitsi.org© Voxeo Corporation
  • 73. Olle Would Want Me To Mention... ! Asterisk 1.8© Voxeo Corporation
  • 74. Jonathan Would Want Me To Mention...!   Voxeo Prophecy 10.1 •  Standards-based platform for speech, IVR and SIP applications •  Downloads and installs in minutes; Scales from 2 ports to 10’s of thousands of ports •  World’s most compatible and compliant VoiceXML and CCXML   Voxeo PRISM 10.1 •  Real-time Communications Application Server •  Supports Converged SIP, Web and XMPP applications. •  Carrier grade high performance platform with full support of high availability and session replication   Free developer versions for Windows, Linux, Mac OS X   www.voxeo.com/prophecy www.voxeo.com/prism74 © Voxeo Corporation
  • 75. Marc Would Want Me To Mention...! sipforum.org/mailman/listinfo/ipv6© Voxeo Corporation
  • 76. © Voxeo Corporation
  • 77. Q&A!  Visit our IPv6 resource page and read our IPv6 blog posts: •  http://bit.ly/voxeoipv6  Dan York •  dyork@voxeo.com •  sip:dyork@voxeo.com •  skype:danyork© Voxeo Corporation