Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[johnespence]

Congratulations on the IPv6 work you have done.  I was looking at the Wireless N router IPv6 support.  I have an implementation question.

You support "DHCPv6 Stateful" configuration both upstream - towards the ISP - and downstream - towards the on-link PCs.  Downstream, I would expect this is DHCPv6 - simple and straightforward.

Upstream, towards the ISP, I can only think this must be DHCPv6-PD, where the Wireless N Router requests a prefix (say a /56) and then enables one /64 from that delegated /56 on the LAN-side interface.  Then the router routes IPv6 packets.

Is that it?  Have you implemented DHCPv6-PD?  Is it compliant with RFC3633?

Thanks.

[Trikein]

Awsome question. Havent done enough homework on IPv6 yet to give a fully educated answer, but is this strictly for curiosity sake, or are you on a ISP that would make use of this already?

[johnespence]

Hi Trikein - thanks for your comment.  I'm a network engineer and consultant.  I work with a number of ISPs regarding their IPv6 strategy and throughout the community ISPs are thinking about their IPv6 deployment strategy, and how they will assign IPv6 addresses to CPE devices.  For IPv4, ISPs assign a single routable addresses (in most cases) and the Home Gateway (HGW) does NAT - as I'm sure you know.  For IPv6, NAT is not used, so the HGW needs a single IPv6 address on the WAN interface, and a /64 subnet for each "inside" subnet.  Current thinking is this would probably be a /56, allowing each subscriber to support 256 inside subnets and an almost infinite number of systems on those subnets.  The only automatic way to do that is either stateless autoconfiguration for the WAN interface, followed by DHCPv6-PD for the prefix.  I think DHCPv6-PD is pretty rare on the ground in HGW systems, hence my question.  I'd love to have a good answer to my question from the IPv6 PM at D-Link.

[Trikein]

Not to blunt, but I don't think your going to get your answer here. This forum is mostly made up of average users. While some of us are a tiny bit more informed then others, your question would probably be better serverd to be sent along official lines. I might be able to get you a contact, but I am unsure how to do so and still keep the amount of anonymity we both require. Maybe try here. Not exactly the right group, but high up enough to be noticed if you use official chains of communications. Good luck, and feel free to post any response you get(and are allowed to make public) here. I am sure it will be a very popular question in the years to come. Good luck.

[johnespence]

Trikein - I am very glad to have your input.  I will pursue via other channels.  If I get something interesting I will post back here.  Be well.

[Trikein]

Looking over his post, you may also want to try contacting: sega01  on these forums. Looks like he is also troubleshooting a IPv6 issue at a pretty high level.