SIP and IPv6 - Can They Get Along?
Upcoming SlideShare
Loading in...5
×

Like this? Share it with your network

Share

SIP and IPv6 - Can They Get Along?

  • 2,493 views
Uploaded on

With World IPv6 Launch happening June 6, 2012, production IPv6 network connectivity will be available to many more businesses and individuals. Major web sites and content providers will all enable......

With World IPv6 Launch happening June 6, 2012, production IPv6 network connectivity will be available to many more businesses and individuals. Major web sites and content providers will all enable IPv6 access to their content. Consumer electronics manufacturers are committing to providing IPv6-enabled devices.

What does this mean for SIP-based real-time communications? How well does SIP work with IPv6 today? What are the challenges to deployment and what steps can be taken to overcome those challenges? What should operators and vendors consider with regard to SIP and IPv6? What software, devices and tools are available to assist? And what case studies and other information is available?

In this session at SIPNOC 2012 on June 26, 2012, in Herndon, Virginia, Dan York discussed all of these points and provided concrete suggestions for moving forward with SIP and IPv6.

More in: Technology
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads

Views

Total Views
2,493
On Slideshare
2,314
From Embeds
179
Number of Embeds
2

Actions

Shares
Downloads
64
Comments
0
Likes
4

Embeds 179

http://www.internetsociety.org 170
http://danyork.me 9

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. SIP and IPv6 – Can They Get Along? SIP Network Operators Conference (SIPNOC) June 26, 2012 Dan York Senior Content Strategist york@isoc.org +1-802-735-1624www.internetsociety.org/deploy360/
  • 2. Dan York www.internetsociety.org/deploy360/ www.danyork.mewww.internetsociety.org/deploy360/
  • 3. www.worldipv6launch.org/infographic/www.internetsociety.org/deploy360/
  • 4. The Good News!www.internetsociety.org/deploy360/
  • 5. IPv6 Works Fine! Linphone – http://www.linphone.org Open source, free and available for Linux, Windows and MacOS Xwww.internetsociety.org/deploy360/
  • 6. Linphone and IPv6 Linphone – http://www.linphone.org Open source, free and available for Linux, Windows and MacOS Xwww.internetsociety.org/deploy360/
  • 7. More SIP Softphones Supporting IPv6Jitsi (formerly SIP Communicator)§  www.jitsi.orgCounterpath Bria§  www.counterpath.comwww.internetsociety.org/deploy360/
  • 8. In Fact, There Are Many More: IP Phones (Desktop): Other SIP Devices •  Avaya (unclear on exact models) •  Cisco SIP Gateways ( ISR 28XX •  Mitel 53xx Series & 38XX, AS5400 ) •  Mocet •  Mediatrix •  Siemens OpenStage •  Mitel Border Gateway (MBG) •  Snom IP-PBXs/Call Servers •  Asterisk 1.8+ SIP Services (in the cloud) •  Brekeke SIP •  INUM.net •  Cisco Unified Communications Manager 7.1 •  Freeswitch 1.1+ •  Kamailio 3.1+ •  OpenSIPS •  Voxeo Prophecy and PRISM8 www.internetsociety.org/deploy360/
  • 9. Why IPv6?www.internetsociety.org/deploy360/
  • 10. In The Beginning... 192.168.20.12www.internetsociety.org/deploy360/
  • 11. Mobility www.flickr.com/photos/kapungo/3396823518/www.internetsociety.org/deploy360/
  • 12. A Plethora of Portable Platforms www.flickr.com/photos/clonedmilkmen/5111779335/www.internetsociety.org/deploy360/
  • 13. Internet of Things www.flickr.com/photos/dmje/5159177886/www.internetsociety.org/deploy360/
  • 14. Internet of Thingswww.internetsociety.org/deploy360/
  • 15. Internet of Thingswww.internetsociety.org/deploy360/
  • 16. EVERYTHING over IPwww.internetsociety.org/deploy360/
  • 17. Only 2 Billion People Are Online – What About The Other 5 Billion?www.internetsociety.org/deploy360/
  • 18. How IP Address Allocation Works Regional Internet Registries (RIRs) Internet Service Providers (ISPs) Youwww.internetsociety.org/deploy360/
  • 19. Global IPv4 Disparity !www.internetsociety.org/deploy360/
  • 20. Oops... as of Feb 1, 2011... All Gone! Regional Internet Registries (RIRs) Internet Service Providers (ISPs) Youwww.internetsociety.org/deploy360/
  • 21. Solutions?www.internetsociety.org/deploy360/
  • 22. IPv4 Marketplacewww.internetsociety.org/deploy360/
  • 23. Prolonging IPv4 - NAT Today NAT   Public  IP   Private  IP   Addresses   PC Home Internet Firewall Firewall Firewall IP ISP   Phone Home  www.internetsociety.org/deploy360/
  • 24. Carrier Grade NAT (a.k.a. LSN) NAT   Public  IP   Private  IP   Addresses   PC Home Internet Firewall Firewall Firewall IP ISP   Phone Home  www.internetsociety.org/deploy360/
  • 25. Old NATs Never Die... NAT   NAT   Public  IP   Private  IP   Private  IP   Addresses   Addresses   PC Home Internet Firewall Firewall Firewall IP ISP   Phone Home  www.internetsociety.org/deploy360/
  • 26. The Problem? SIP NATwww.internetsociety.org/deploy360/
  • 27. Oh, and by the way... (sorry... we still have NAT-like networks with IPv6...)www.internetsociety.org/deploy360/
  • 28. And then there is...www.internetsociety.org/deploy360/
  • 29. IPv6 Challenges: User Interfaceswww.internetsociety.org/deploy360/
  • 30. See the problem?www.internetsociety.org/deploy360/
  • 31. See the problem?www.internetsociety.org/deploy360/
  • 32. IPv4 192.168.20.12www.internetsociety.org/deploy360/
  • 33. IPv62001:db8:34a5:23:aa1f:12f4:9009:1234www.internetsociety.org/deploy360/
  • 34. IPv6 Address Compression 2001:db8:34a5:0:0:0:0:1 2001:db8:34a5::1 (oh, and they aren’t case-sensitive)www.internetsociety.org/deploy360/
  • 35. IPv6 Addresses 127.0.0.1 ::1 0.0.0.0 ::www.internetsociety.org/deploy360/
  • 36. DNS is your friend!www.internetsociety.org/deploy360/
  • 37. IPv6 Challenges: Port Numberswww.internetsociety.org/deploy360/
  • 38. IPv4 Port Numbers 192.168.20.12:5060www.internetsociety.org/deploy360/
  • 39. IPv4 Port Numbers in IPv6? 192.168.20.12:5060 2001:db8:34a5::1234:5060www.internetsociety.org/deploy360/
  • 40. IPv6 Port Numbers [2001:db8:34a5::1234]:5060www.internetsociety.org/deploy360/
  • 41. IPv6 addressinghttp://[2001:db8:34a5::1234]/index.html http://[2001:db8:34a5::1234]:8080 sip:dan@[2001:db8:34a5::1234] sip:dan@[2001:db8:34a5::1234]:5060www.internetsociety.org/deploy360/
  • 42. IPv6 Challenge: Multiple Addresseswww.internetsociety.org/deploy360/
  • 43. IPv4 – Single Address / Interface 192.168.20.12www.internetsociety.org/deploy360/
  • 44. IPv6 – Multiple Addresses / Interface 192.168.20.12 2001:db8:34a5:92:21c:a5ff:fe12:3a80 (global) fe80::21c:a5ff:fe12:3a80 (link-local)www.internetsociety.org/deploy360/
  • 45. IPv6 – Neighbor Discovery No More DHCP For Address Assignment (well, unless you want it) Router Advertisements vs ARPwww.internetsociety.org/deploy360/
  • 46. IPv6 – Address Creation Router Advertisement 2001:db8:34a5:92:21c:a5ff:fe12:3a80 Autoconfiguration from Ethernet Addresswww.internetsociety.org/deploy360/
  • 47. The Key Point… Can Your Device/Software/Etc. Work With Multiple IP Addresses?www.internetsociety.org/deploy360/
  • 48. IPv6 Challenges: DNSwww.internetsociety.org/deploy360/
  • 49. IPv4 and DNSexample.com 3600 IN A 192.168.20.12www.internetsociety.org/deploy360/
  • 50. IPv6 and DNSexample.com 3600 IN A 192.168.20.12example.com 3600 IN AAAA 2001:db8:34a5::1234www.internetsociety.org/deploy360/
  • 51. 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)www.internetsociety.org/deploy360/
  • 52. UNhappy Eyeballs DNS Svrexample.com A 192.168.20.12example.com AAAA 2001:db8:34a5::1234 AAAA ? You (a long time later...) A ?www.internetsociety.org/deploy360/
  • 53. 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)www.internetsociety.org/deploy360/
  • 54. Happy Eyeballs RFC 6555 tools.ietf.org/html/rfc6555www.internetsociety.org/deploy360/
  • 55. IPv6 Challenges: Storing IP Addresseswww.internetsociety.org/deploy360/
  • 56. How Do You Store IP Addresses? Memory? Databases? Config Files? Room for two? (or more?)www.internetsociety.org/deploy360/
  • 57. Config Files<category name="SIP"> <item name="Server1">127.0.0.1:5060 </item></category>www.internetsociety.org/deploy360/
  • 58. IPv6 and SIPwww.internetsociety.org/deploy360/
  • 59. RFC 6157 RFC 6157 “IPv6 Transition in the Session Initiation Protocol (SIP)” tools.ietf.org/html/rfc6157www.internetsociety.org/deploy360/
  • 60. SIP Architecture SIP SIP Proxy Proxy A SIP B SIP SIP Alice Bob Media (RTP, MSRP, etc.)www.internetsociety.org/deploy360/
  • 61. 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 Mediawww.internetsociety.org/deploy360/
  • 62. “SIP” = Multiple Protocols SIP SDP RTPwww.internetsociety.org/deploy360/
  • 63. IPv4/IPv6 FunCommunicating between IPv4 client and IPv6 clientthrough a proxy§  Record-Route: <sip:2001:db8::1;lr>§  Record-Route: <sip:192.0.2.1;lr>Mixed communication across a path of proxiesMixed communication: IPv6 for SIP, IPv4 for mediawww.internetsociety.org/deploy360/
  • 64. IPv6 and SDPOnly allows a single IP address per media stream (“c=“parameter)§  c=IN IP4 192.168.20.12§  c=IN IP6 2001:db8:34a5::1234Multiple proposals for additional SDP parameters§  ex. ANAT - RFC 4091 & 4092 – now deprecated by IETF but used in US military’s AS-SIP§  draft-boucadair-mmusic-altc-05 – “Alternate Connectivity Attribute”The IETF way forward is ICE – RFC 5245www.internetsociety.org/deploy360/
  • 65. NAT, NAT, NAT... STUN, TURN, ICE (RFC 5245)www.internetsociety.org/deploy360/
  • 66. Discovery of SIP ServersUser agents need to find SIP servers/proxiesDHCPv6§  SIP Options in RFC 3319DNS SRV, NAPTR and AAAA Records (RFC 3263)www.internetsociety.org/deploy360/
  • 67. Other IPv6 ConsiderationsOther interfaces§  Web and management systems§  Logging§  APIsCustom SIP headersMulti-vendor interoperabilitySBC and firewall support for SIP over IPv6www.internetsociety.org/deploy360/
  • 68. SIP Forum “IPv6” Mailing Listsipforum.org/mailman/listinfo/ipv6www.internetsociety.org/deploy360/
  • 69. SIPit Test Events sipit.net SIPit 28: “68% of the implementations present supported IPv6.”www.internetsociety.org/deploy360/
  • 70. Get Started With IPv6... Deploy360 Programme www.internetsociety.org/deploy360www.internetsociety.org/deploy360/
  • 71. SIP Forum “IPv6” Mailing Listsipforum.org/mailman/listinfo/ipv6www.internetsociety.org/deploy360/
  • 72. Attend the IPv6 BOF Tomorrow… 12:45-1:30pm•  Exchange of experiences•  Should SIP Forum charter a working group?•  What could working group do? •  Document existing best practices for working with SIP over IPv6 (perhaps in the form of a short whitepaper or document). •  Identify current technical issues with using SIP over IPv6. •  Maintain/develop a list of IPv6-enabled SIP/VoIP software/ hardware/services. •  Identify/develop case studies about successful migration of SIP services to IPv6www.internetsociety.org/deploy360/
  • 73. Dan York Senior Content Strategist Internet Society york@isoc.org +1-802-735-1624 Thank You! www.internetsociety.org/deploy360 twitter.com/deploy360 facebook.com/deploy360www.internetsociety.org