Hawaii IPv6 Task Force Meeting 1, 1/14/2010
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1 Hawaii IPv6 Task Force Meeting 1, 1/14/2010 Alan Whinery U. Hawaii Chief Internet Engineer President, IPv6 Forum Hawaii Initial Meeting UHM POST 801
2 Hawaii IPv6 Task Force Chapter of IPv6 Forum (ipv6forum.com) Target participants: network operators Purpose: to bring about deployment of IPv6 on all networks in Hawaii 2
3 Hawaii IPv6 Task Force What the Task Force needs from you: Tutorials web casts how-to Experiences Address acquisition Addressing plans Deployment routing services clients Advocacy tell your peers, your boss, your customers 3
4 Hawaii IPv6 Task Force What Task Force offers you: Staff training Pro-IPv6 voices to add to your own A strengthening community of know-how Everything you put into it 4
5 Hawaii IPv6 Blocks Announced Lavanet 2001:1888::/32 UH 2607:F278::/32 Hawaii Pacific Teleport 2607:fa00::/32 Partial: DREN 2001:0480::/32 Partial: TW Telecom 2001:4870::/32 Allocated Hawaii On-Line 2001:1958::/32 Hawaiian Telecom 2607:F9A0::/32 5
6 Most things support IPv6 Now Clients Windows (XP,Vista,7) Mac OS X Router/Switch Cisco, Juniper, Brocade (Foundry) Server Linux, Solaris, Win2003/2008, MacOS Apache, BIND, Postfix, Sendmail
7 ARIN IPv6 Wiki Facilitate discussion and information sharing on IPv6 Includes real-world experience about adopting IPv6 7
8 What Will Happen (in no particular order) IPv4 demand continues IPv4 free pool depletes IPv4 NAT use increases IPv6 deployment 8
9 The Bottom Line We re running out of IPv4 address space IPv6 must be adopted for continued Internet growth IPv6 is not backwards compatible with IPv4 We must maintain IPv4 and IPv6 simultaneously for many years 9
10 Situation Today, the Internet is predominantly based on IPv4 The Internet must run two IP versions at the same time (IPv4 & IPv6) - this is the dualstack approach 10
11 Situation Today, there are organizations attempting to reach your mail and web servers via IPv6. In the near future there will be many more deployments using IPv6. 11
12 Call to Action Enterprise Customers Mail and web servers need to be reachable via IPv6 in addition to IPv4 in the future Open a dialogue with your Internet Service Provider about future IPv6 services Each organization s decision regarding timeline & investment level will vary 12
13 Call to Action Internet Service Providers Begin planning to connect customers via both IPv4 and IPv6 now Communicate with your peers and vendors about IPv6 IPv6 considerations when making purchases 13
14 Call to Action Equipment Vendors Probably limited demand for IPv6 in the past Demand for IPv6 support will become mandatory very, very quickly Introduce IPv6 support into your product cycle as soon as possible 14
15 Call to Action Content Providers Content clients must be reachable to newer Internet customers Begin planning to connect hosting customers via both IPv4 and IPv6 now Encourage customers to use IPv6 and test their applications over it as soon as possible 15
16 Government Actions Awareness Coordinate with industry Adopt incentives Regulatory Economic Support and promote activities Officially adopt IPv6 16
17 Learn More and Get Involved Learn more about IPv6 Get Involved in ARIN Public Policy Mailing List Attend a Meeting 17
18 The Main Points IPv6 support in computers, routers, switches servers is ready the way to mitigate costs is to start now the way to minimize v6 transition effects is to start now the way to deal with address depletion is to deploy v6 now the time to learn lessons about IPv6 deployment is while customer traffic is relatively small 18
19 Talking To The Press Just about 100% of IPv6-related news coverage is counter-productive places IPv6 tansition in the distant future focuses on v4 address depletion as sole reason to move to IPv6 perpetuates idiotic quips and analogies tires on a speeding car Everyone should consider what the message is and stick to it when facing a reporter IPv6 transition is occurring now devices are ready deploying now is smarter than deploying then 19
20 IPv6 is not a project We (UH) don't have an IPv6 person, or an IPv6 team, or an IPv6 initiative. It is our policy to deploy IPv6 where we deploy IPv4 As upgrades or maintenance or changes are scheduled, IPv6 is on the to-do list. 20
21 IPv6 is not a project Start now Don't forklift Consider IPv6 in the course of your design and purchasing decisions Work toward including IPv6 in what you do. 21
22 Cost IPv6 is not value-added software Cisco now has feature parity Juniper has stopped charging for it Most of our costs, Lavanet's costs are in staff time and training. Lavanet has participated in Opensource projects and contributed IPv6 code Cost can be controlled if you simply place IPv6 on your requirements list, start requiring it, and don't panic The Big Island router memory re-design is so far the highest-cost IPv6 deployment measure (by far). 22
23 Primary Deployment Issue For Dual Stack (routing table size vs. RAM, et al) Current issues W.R.T. global routing table growth include: Number of routes effects of constant changes (churn) adding another table seems counterproductive but it's better than continuing to add lessaggregable IPv4 atoms Policy and practice to avoid routing table explosion in IPv6 is hard to pin down 23
24 List of Problems: Native IPv6 Deployment To User Networks Honest: not a single one. 24
25 Windows Mac OS X Linux Solaris Handhelds BSD/OS Game Consoles Unclass November 2008 UH Client OS Distribution November % 0.04% 0.01% 0.14% 0.18% 0.91% 4.68% 0.03% 0.00% 0.47% 0.09% 1.24% 14.75% 23.87% 69.62% 78.86% Volume of HTTP GETs categorized by User-Agent 25
26 Windows Mac OS X Linux Solaris Handhelds BSD/OS Game Consoles Unclass Out-Of-Box V6 Readiness V6 OOB Clients 2008 Volume of HTTP GETs Yes No V6 OOB Clients 2009 Volume of HTTP GETs 35.37% 52.09% 47.91% 64.63% 26
27 Tunneled v6 In The Wild Sources of incidental 6to4, Teredo seem to be applications which require IPv6, e.g. P2P clients Teredo can be used as an indicator of NAT There may be more insidious things present Setting up local tunneling services can mitigate cost and issues for tunneled clients Native IPv6 deployment should stop 6to4, but Teredo will persist from behind NAT Un-managed tunnels can represent increased attack surface and firewall by-pass. 27
28 UH Teredo Traffic All clients use one of three Teredo servers: (Microsoft Asia) (Microsoft Europe) (Microsoft USA) NAT causes Teredo traffic Virtual machine NATs cause Teredo traffic Exceedingly complicated Presumably initiated by an application install 28
29 Steps To Dual-stack IPv6/(4) Deployment Get addresses Configure routers Configure DNS Configure public-facing services (web/mail/etc) Configure clients Probably only necessary to the extent that you have Windows XP 29
30 Steps to single-stack IPv6 Deployment Get addresses Configure routers Configure DNS (in v6 only) Configure public-facing services (web/mail/etc) Provide gateway to v4 Configure clients Need DNS server entry Manual or DHCP 30
31 IVI V6 to V4 gateway Implementation of Internet Draft From CERNet and 清華大學 (Beijing) License unclear Involves patches to out-dated kernel (2.6.18) Which doesn t compile under current libc/gcc I have seen it work well, in February 2009, at Joint Techs, Texas A&M 31
32 Trying Out Your IPv6 It s hard to know whether you are using it. ShowIP add-on for Firefox helps But it isn t perfect When the OS provide resolution and connectivity The applications still may Or may not 32
33 Dirty Tricks: OK! Nothing says that the interface or device that offers services via IPv6 is required to be the same as the one that offers those services over IPv4 33
34 Graphing v4/v6 The old MRTG model of graphing interface Octet-counts doesn't do per protocol accounting Various non-optimal things can be done ACLs feeding counters, etc The following graphs were by using 8 bpf counters fed by individual filter expressions No packet was examined Not a scalable approach Data represents 1 day on our TWTC v6/v4 peering 34
35 V4 versus V6 traffic November 19, bps v4 in v4 out n6 in n6 out teredo in teredo out 6to4 in 6to4 out hour 35
36 V6 Tunnels and Native Traffic November 19, bps teredo in teredo out 6to4 in 6to4 out n6 in n6 out hour 36
37 Native IPv6 Traffic November 19, bps 3000 n6 in n6 out hour 37
38 Comparing v6/4 paths (UH) Average Hops from 2504 Hosts Average RTT to/from 2504 Hosts From ping TTL From ping Avg RTT hops 8 6 milliseconds v6 v4 0 v6 v4 38
39 Comparing v6/4 paths (LavaNet) LavaNet: Avg Hops from 2804 hosts From ping TTL LavaNet: Avg. RTT to/from 2804 Hosts From ping Avg RTT hops 8 6 milliseconds v6 v4 0 v6 v4 39
40 Stateless Auto-configuration (SLAAC) Many operating systems have IPv6 turned on by default With SLAAC, if your router interface is using v6, then you are too. You may use v6 without realizing it Your machine determines your IPv6 address, and adds it to the prefix advertised by the router Some OS build the RH 64 bits using the MAC address Others will make up random (currently only Vista and W7) complicates address accounting/management 40
41 Getting a DNS Server address Stateless auto-configuration gets you an address and gateway But no DNS server Of course, if you have DNS through IPv4, you will learn v6 addresses through that DNS server Currently, the only way for a v6-only host to auto-learn the name server address is DHCPv6 Attachments to SLAAC are proposed RFC 5006 (IPv6 Router Advertisement Option for DNS) 41
42 IPv6: Apple OSX On by default Missing DHCP6 Can't specify v6 address for networked printer, because the preferences pane for printer set-up considers a colon : as preceding a port number (? 10.6) Printer can, however, be specified by name 42
43 Apple OS X Applications Firefox once required v6 turn on This seems to have changed Safari does browse IPv6 ping works with separate ping6 traceroute works with separate traceroute6 SSH client works telnet works to router: fe80::209:7bff:fedc:400%en0 works 43
44 IPv6: Windows XP (SP2+) You can add it to an interface with the interfaces Properties pane, just like IP(v4) or IPX/SPX or NetBIOS Once added, there is no GUI config, although some things can be accomplished with the command line Will not do DNS queries in IPv6 packets Will receive IPv6 info from DNS in IPv4 packets Is Ultimately doomed. 44
45 Windows XP Applications Firefox will browse IPv6 IE7 will browse IPv6 ping works Tries first address as returned by DNS tracert works Tries first address as returned by DNS Telnet doesn t appear to work Thunderbird works 45
46 IPv6: Windows Vista and 7 On by default Does DHCP6 There have been some problems Passing of ICMP6 messages to applications 46
47 Windows Vista Applications Firefox will browse IPv6 IE7 will browse IPv6 ping works Tries first address as returned by DNS tracert works Tries first address as returned by DNS Telnet untested not enabled by default Thunderbird works 47
48 IPv6: Ubuntu 8 On by default Does DHCP6, if you install it Since Linux (and BSD OS) are typically used for reference implementations, support is pretty good 48
49 Ubuntu Linux Applications Firefox will browse IPv6 ping works as ping6 traceroute works as traceroute6 Telnet doesn t appear to work Linux is a kernel. Linux distributions are operating systems. They differ as to what apps they provide for various roles. Distributions means, Red Hat, Ubuntu, Suse, Debian, Slackware, etc. 49
50 What can I reach with IPv6? More and more. See Things You Can Reach With IPv6 50
51 Returning To Work On Monday Hawaii IPv6 Forum 51
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