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. of Conversations

twitter.com/danyork

twitter.com/voxeo

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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


EVERYTHINGover

IP


How IP Address Allocation Works

Regional Internet Registries (RIRs)

Internet Service Providers (ISPs)

You


Global IPv4 Disparity


Oops... as of Feb 1, 2011...

Regional Internet Registries (RIRs)

Internet Service Providers (ISPs)

You

All Gone!

Solutions?


IPv4 Marketplace


Prolonging IPv4 - NAT Today

Firewall

ISP

Internet Firewall

IPPhone

PC

Home Firewal

l

Home

Public IPNAT Private IP

Addresses


Carrier Grade NAT (a.k.a. LSN)

ISP

Internet Firewall

IPPhone

PC

Home Firewal

l

Home


Addresses

Firewall


Old NATs Never Die...

ISP

Internet Firewall

IPPhone

PC

Home Firewal

l

Home


Addresses

Firewall

NAT Private IPAddresses


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

You

DNSSvr

example.com A 192.168.20.12example.com AAAA 2001:db8:34a5::1234

AAAA

(a long time later...)

A

?

?


Happy Eyeballs

You

DNSSvr

example.com A 192.168.20.12example.com AAAA 2001:db8:34a5::1234

AAAA

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

Alice BobMedia (RTP, MSRP, etc.)

SIPSIP

SIP Proxy

BSIP


SIP Reality

Internet (or WAN)

Alice BobMedia

SIPSIP

SIP Proxy

A SIP

SIP Proxy

B

SIP Proxy

N

SIP Proxy

D SIP

SIP Proxy

CSIP SIP

Media Proxy

A

Media Proxy

BMedia Media


“SIP” = Multiple Protocols

SIPSDP

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

© Voxeo Corporation© Voxeo Corporation© Voxeo Corporation75

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


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:[email protected]

• skype:danyork

dan york - presentation at emerging communications conference & awards (ecomm 2011)

Technology

ipv6 addressinghttp

ipv6 address compression2001

ipv6 address creation2001

ipv6 address compression127

ipv6 dns funwhat

ipv6 port numbers2001

real ipv6 connectivity

ipv6 neighbor discoveryno