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From: Ben Crosby <ben.m.crosby@xxxxxxxxx> Date: November 10, 2004 12:07:08 PM EST To: jeffrey.s.young@xxxxxxxxxxx Subject: IPv6 Reply-To: Ben Crosby <ben.m.crosby@xxxxxxxxx>
Folks,
To expand on Jeff's explanation of the IPv6 status here at IETF61; The entire network, both wired and wireless, was designed from the get-go as being IPv6 capable. It also had a very real and major requirement to be stable in the face of hundreds of clients all at 100% transmit power, rogue APs, and all the other problems that have plagued previous IETF wireless networks. The good folks at Airespace seemed to have a system that met this goal, and as we all can see, it indeed works well.
However, when we asked Airespace to join us in this adventure, it became clear that the "intelligence" of their system worked through tracking IPv4 DHCP requests, and thus wouldn't work with IPv6. This lack of IPv6 support was nearly a show stopper, however Airespace jumped through some major hoops to design, implement, and deploy code that monitors RAs and RSs specifically to handle IPv6 for this network.
Like most brand new code, when we deployed it, we encountered problems. Problems that lead to instability in ALL wireless network access. After several long days and nights of working on this long before the first attendees arrived (we've been on site since Tuesday 2nd - Election Day ;) we decided to disable the IPv6 support on the wireless network, rather than risk the overall network stability. Airespace continues to work on the problems, and we believe that we have a reasonable interim solution.
We have phased in a new image with limited deployment, which we will monitor. If we experience no problems, IPv6 will be back on the wireless lan, however we need to maintain the overall stability of the wireless network as our highest priority.
For those who need IPv6 on wireless: SSID: ietf61v6 WEP Key: thisisav6wlan Hex: 746869736973617636776c616e
Coverage will be available in Georgetown, Lincoln, Jefferson, Monroe, Military and Hemisphere. You should not associate with this wireless network if you need stable IPv4. This is a dedicated network with new AP's and a new controller.
My thanks to our volunteer staff who worked to deploy this network in the late hours last night (and very early hours this morning) after the social event.
For those that are inconvenienced by the loss of IPv6, I sincerely apologize, and remind you that native IPv6 is available at every wired port in the terminal room.
Thanks for bearing with us, and have a good meeting!
- Ben Crosby Alcatel / IETF61 NOC
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