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2008.02.20 NANOG 42 IPv6 hour feedback and closing notes
All done--thanks to CRG West for a kick-ass NANOG 42, and we'll see you all in Brooklyn in June! Matt 2008.02.20 Randy Bush, results of IPv6 hour from yesterday. Bill Fenner, Duane Wessels, and ???? Larry made it work to the extent that it did. Grabbed packet headers for the hour; did a simple distribution of IPv4, IPv6, and ARP. Should have subtracted out the NAT-PT traffic from v4, as it gets counted as both. most of the v6 traffic was NAT-PT; that's why v4 tracks v6 identically for the hour. When experiment started, amount of ARP traffic doubled. Duane was pinging the v4 addresses on the subnet; there were ARPs for offnet addresses. Some implementation seem to be making on-net assumption; with no default route, just try arping for it? Keep in mind the v6-xp had v4 but no default. MAC addresses associated to given SSID blue and white were V6 SSIDs, you can see that people *did* shift from the v4 to v6 SSIDs. nanog and nanog-a got double-counted, as they went to the same back-end; but it's still very clear most people tried switching to v6 SSIDs. Duane shows the pinging of v4 addresses during the hour. People definitely stopped trying to use v4 while it was turned off, and started again when they got back from lunch. Linux NAT-PT one known existing implementation http://tomicki.net/naptd.php Userpace based daemon had planned on using Cisco NAT-PT...but unable to make it work. Moved NANOG stats collector Linux box to trunk port configured 3 vlans for nanog-v6, nanog-xp-v6, It puts interface in promiscuous mode, listens for all packets, does translation in userspace. Uses DNS lookups, it synthesizes quad-A responses when there's no A response forthcoming. Daemon repeatedly appeared to hang Had to restart it numerous times Seemed to work better during v6 only hour. There's also v6 on regular networks, could be hanging due to nat-pt box seeing v6 on the main nanog/nanog-a networks (outside). cacti graphs, total traffic through CRG-West 20m to noon, drops to 2-3M, 12:20 NAT-PT started working better, hit 10Mb, drops at 1300 for lunch. total number of associations on APs; peaked at 314 early, at noon drops down to about 100 clients at noon; went up to about 175 during the hour. that's just layer 2 association; but the previous traffic was indeed showing there was some v6 happening. Collected *lots* of "these need to be fixed" data as well for vendors. Jay Hennigan, Impulse Internet--used nanog-v6 and it's getting much better performance than it was during the v6 hour. competition for resource, or need for it to listen to all three networks, could be a bit of a reconfiguration that helped get things going. Closing comments from Todd Very impressive turnout for a four day NANOG! Thanks to CRG-West, wonderful hotel, party last night, many thanks to break sponsors, they help keep the conference price reasonable for us. Statistics! 575 registered attendees (483 paid) 20% ISP 21% network operator 18% equipment vendor 12% content provider 6% research 2% government bunch of ISP folks moving to content houses top countries 488 US 19 Japan 13 UK 11 Canada 20 others orgs: 41 Cisco 16 juniper 14 equinix 13 CRG West Much related to close travel for them. ;) FILL OUT YOUR SURVEY! www.nanog.org! Need to know what was good, what was bad. NANOG43 in Brooklyn, June, TelX is sponsoring it, will be a fantastic, impressive logistical feat given hotel prices in NY; getting price under $200/night is very, very impressive. Program Committee--huge kudos for getting program out soon enough for people to make plans around it. If you have ideas for presentations, come talk to the yellow badged people! If you can help, talk to the yellow badge people! And FILL OUT YOUR SURVEY!