Dan York - Presentation at Emerging Communications Conference & Awards (eComm 2011)

How IPv6 Will Kill Telecom – And What We Need To Do About It
June 27, 2011
Dan York
Dir. ofConversations
twitter.com/danyork
twitter.com/voxeo

Dan York
www.danyork.com

Why IPv6?

In The Beginning...
192.168.20.12

Mobility
www.flickr.com/photos/kapungo/3396823518/

A Plethora of Portable Platforms
www.flickr.com/photos/clonedmilkmen/5111779335/

Internet of Things
www.flickr.com/photos/dmje/5159177886/

Internet of Things

EVERYTHINGoverIP

How IP Address Allocation Works
Regional Internet Registries (RIRs)
Internet Service Providers (ISPs)
You

Global IPv4 Disparity

Oops... as of Feb 1, 2011...
All Gone!
Regional Internet Registries (RIRs)
Internet Service Providers (ISPs)
You

Solutions?

IPv4 Marketplace

Prolonging IPv4 - NAT Today
NAT
Private IP
Addresses
Public IP
PC
Internet
Firewall
Home Firewall
Firewall
IP
Phone
ISP
Home

Carrier Grade NAT (a.k.a. LSN)
NAT
Private IP
Addresses
Public IP
PC
Internet
Firewall
Home Firewall
Firewall
IP
Phone
ISP
Home

Old NATs Never Die...
NAT
NAT
Private IP
Addresses
Private IP
Addresses
Public IP
PC
Internet
Firewall
Home Firewall
Firewall
IP
Phone
ISP
Home

The Problem?
SIP NAT

Oh, and by the way...
(sorry... we still have NAT-like networks with IPv6...)

And then there is...

Challenge #1 For VoIP and UC Apps:
How Many Digits Is That?

See the problem?

IPv4
192.168.20.12

IPv6
2001:db8:34a5:23:aa1f:12f4:9009:1234

IPv6 Address Compression
2001:db8:34a5:0:0:0:0:1
2001:db8:34a5::1(oh, and they aren’t case-sensitive)

IPv6 Address Compression
127.0.0.1 ::1
0.0.0.0 ::

DNS is your friend!

Where’s The Nearest Port?

IPv4 Port Numbers
192.168.20.12:5060

IPv4 Port Numbers in IPv6?
192.168.20.12:5060
2001:db8:34a5::1234:5060

IPv6 Port Numbers
[2001:db8:34a5::1234]:5060

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

DNS is your friend!

What’s the Address?

IPv6 – Multiple Addresses / Interface
192.168.20.12
2001:db8:34a5:92:21c:a5ff:fe12:3a80(global)
fe80::21c:a5ff:fe12:3a80(link-local)

IPv6 – Neighbor Discovery
No More DHCP For Address Assignment(well, unless you want it)
Router Advertisements
Also Replaces ARP

IPv6 – Address Creation
2001:db8:34a5:92:21c:a5ff:fe12:3a80
Router Advertisement
Autoconfiguration fromEthernet Address

DNS is your friend!

How Many A’s Do You Want With That?

IPv4 and DNS
example.com 3600 IN A 192.168.20.12

IPv6 and DNS
example.com 3600 IN A 192.168.20.12
example.com 3600 IN AAAA 2001:db8:34a5::1234

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!)

UNhappy Eyeballs
DNSSvr
example.com A 192.168.20.12
example.com AAAA 2001:db8:34a5::1234
AAAA
?
You
(a long time later...)
A
?

Happy Eyeballs
DNSSvr
example.com A 192.168.20.12
example.com AAAA 2001:db8:34a5::1234
AAAA
?
You
A
?
(sent at same time;
whichever replies first wins)

Happy Eyeballs
draft-ietf-v6ops-happy-eyeballs

What Lies Buried Within?

How Do You Store IP Addresses?
Memory?
Databases?
Config Files?
Room for two? (or more?)

Config Files
<category name="SIP">
<item name="Server1">127.0.0.1:5060 </item>
</category>

IPv6 Works Fine!
Linphone – http://www.linphone.orgOpen source, free and available for Linux, Windows and MacOS X

Linphone and IPv6
Linphone – http://www.linphone.orgOpen source, free and available for Linux, Windows and MacOS X

RFC 6157
RFC 6157
“IPv6 Transition in the Session Initiation Protocol (SIP)”
tools.ietf.org/html/rfc6157

SIP Architecture
SIP Proxy
A
SIP Proxy
B
SIP
SIP
SIP
Alice
Bob
Media (RTP, MSRP, etc.)

SIP Reality
Internet (or WAN)
SIP Proxy
A
SIP Proxy
B
SIP Proxy
N
SIP Proxy
D
SIP Proxy
C
SIP
SIP
SIP
SIP
SIP
SIP
Media Proxy
A
Media Proxy
B
Alice
Bob
Media
Media
Media

“SIP” = Multiple Protocols
SIP
SDP
RTP

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

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

NAT, NAT, NAT...
STUN, TURN, ICE
(RFC 5245)

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)

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

SIP Forum “IPv6” Mailing List
sipforum.org/mailman/listinfo/ipv6

SIPit Test Events
sipit.net
SIPit 28: “68% of the implementations present supported IPv6.”

Get Started With IPv6...
http://bit.ly/voxeoipv6

Set up Test Lab or your Home Office
http://tunnelbroker.net
www.test-ipv6.comwww.ipv6-test.com

SIP Softphones Supporting IPv6
Linphone
www.linphone.org
Jitsi (formerly SIP Communicator)
www.jitsi.org

Olle Would Want Me To Mention...
Asterisk 1.8

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/prophecywww.voxeo.com/prism
75

Marc Would Want Me To Mention...
sipforum.org/mailman/listinfo/ipv6

Q&A
Visit our IPv6 resource page and read our IPv6 blog posts:
http://bit.ly/voxeoipv6
Dan York
sip:dyork@voxeo.com
skype:danyork

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Dan York - Presentation at Emerging Communications Conference & Awards (eComm 2011)

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