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Copyright © 1999 Telcordia Technologies All Rights Reserved Christian Huitema An SAIC Company IPv6: Connecting 6 billion.

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Presentation on theme: "Copyright © 1999 Telcordia Technologies All Rights Reserved Christian Huitema An SAIC Company IPv6: Connecting 6 billion."— Presentation transcript:

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2 Copyright © 1999 Telcordia Technologies All Rights Reserved Christian Huitema An SAIC Company IPv6: Connecting 6 billion humans, and then 6,000 billion computers

3 Doc Name – 2 Copyright © 1999 Telcordia Technologies All Rights Reserved IPv6: the dawn of a new Internet

4 Doc Name – 3 Copyright © 1999 Telcordia Technologies All Rights Reserved The route problem is controlled by CIDR, but there is a price...

5 Doc Name – 4 Copyright © 1999 Telcordia Technologies All Rights Reserved TOP Next level Site Link Host Provider, Exchange IPv6 Routing architecture: solves the routing problem

6 Doc Name – 5 Copyright © 1999 Telcordia Technologies All Rights Reserved With IPv6: Multi-homing, multiple addresses Choice of address => Choice of provider Addresses follow “abstract” topology

7 Doc Name – 6 Copyright © 1999 Telcordia Technologies All Rights Reserved Automatic address configuration: IPv6 eases network management  Change provider  Tell the routers, the DHCP servers: – router configuration.  Reconfigure the hosts: – Automatic, or DHCP.  Reconfigure the DNS: – Update the network record.

8 Doc Name – 7 Copyright © 1999 Telcordia Technologies All Rights Reserved At some point, we will need more addresses

9 Doc Name – 8 Copyright © 1999 Telcordia Technologies All Rights Reserved Destination Address (128) Source Length (16) Payload(8)H.Count(8) v6Class(8)Flow-label(20) IPv6, same services, 128 bit addresses no more address scarcity

10 Doc Name – 9 Copyright © 1999 Telcordia Technologies All Rights Reserved Are the Internet users ready for IPv6? Evolution takes time...

11 Doc Name – 10 Copyright © 1999 Telcordia Technologies All Rights Reserved Running out of addresses, right now  Lucky large users: – Lucent 6,700,000 addresses – US Air Force: 675,000 hosts – US Navy 600,000 hosts – US Army 400,000 hosts – Digital180,000 hosts – Control Data 180,000 hosts – Hewlett-Packard180,000 hosts – Bay Networks, 3Com, Harvard, NASA...  Unlucky large users: – Use Net 10, and NATs

12 Doc Name – 11 Copyright © 1999 Telcordia Technologies All Rights Reserved NAT attempt to translate addresses, without changing the application Global Internet Private addresses NAT A B But it does not really work...

13 Doc Name – 12 Copyright © 1999 Telcordia Technologies All Rights Reserved NAT are not the solution  Loss of functionality – IP security – Internet Telephony – 100 ways to carry an address in a file – call me back at number x.x.x.x  Not applicable to ISP – Pool of modems => pool of addresses – Today, ratio of 1modem to (5..10) users – Demand is exploding...

14 Doc Name – 13 Copyright © 1999 Telcordia Technologies All Rights Reserved Watching the demand for Cable Modems… … and waiting for ADSL, and appliances.

15 Doc Name – 14 Copyright © 1999 Telcordia Technologies All Rights Reserved ISP don’t do NAT  ISP are the big users of addresses – America Online 1,900,000 – UUNET 1,800,000 – ANS 750,000 – BBN (GTE)700,000 – PSINet 600,000 – AT&T475,000 – Sprint400,000 – Road Runner, Pac.Bell, IBM, Demon, Hinet, Media 1...

16 Doc Name – 15 Copyright © 1999 Telcordia Technologies All Rights Reserved Evolution continues … let’s try to fix NATs

17 Doc Name – 16 Copyright © 1999 Telcordia Technologies All Rights Reserved RSIP acts as an “external address server”, eliminating side effects of NATs Global Internet Private addresses RSIP A B But the applications must be upgraded...

18 Doc Name – 17 Copyright © 1999 Telcordia Technologies All Rights Reserved RSIP with “net 10” is a limited solution  Not as easy to deploy as NAT –need to agree on a standard RSIP protocol, –need to upgrade the applications.  Not as future-proof as IPv6 –extensions by sharing address + ports between stations –one station may well use 256 ports, –hence RSIP = IPv4 + 8 bits = 40 bit addresses, –at most 4 billion networks.

19 Doc Name – 18 Copyright © 1999 Telcordia Technologies All Rights Reserved Natural evolution leads to IPv6 IPv4 IPv4+NAT IPv4+RSIP IPv6+RSIP IPv6 Crisis Broken... Future proof... Backbone...

20 Doc Name – 19 Copyright © 1999 Telcordia Technologies All Rights Reserved IPv6 needs a credible transition strategy … and RSIP provides it.  The official “parallel stacks” approach is broken –If IPv4 is present, no incentive for IPv6 –If net 10 is present, no advantage to autoconfiguration  Alternative: IPv6 + RSIP to IPv4 –IPv6, RSIP capable stack + applications, –Full benefit of autoconfiguration, –As easy to deploy as “plain RSIP,” –Fully transparent access to IPv4 domains.  IPv6 should embrace RSIP –provide support for RSIP discovery in ICMP?

21 Doc Name – 20 Copyright © 1999 Telcordia Technologies All Rights Reserved IPv6 will appear from the edges … and we need to optimize the 6Bone IPv6 + RSIP Backbone will convert as demand builds up

22 Doc Name – 21 Copyright © 1999 Telcordia Technologies All Rights Reserved IPv6: we need to connect 6,000,000,000 people Don’t forget the rest of the world!

23 Copyright © 1999 Telcordia Technologies All Rights Reserved An SAIC Company


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