Re: [Softwires] New Version Notification for draft-fsc-softwire-dhcp4o6-saddr-opt-00.txt

[<[e-mail]>]

Hi Linda,

Please see below.

Thanks,
Ian

Qi，

  That's exactly what I want to express. Now it's addressed. Thanks.

  Here, I have another question: some content in section 1:
   The service provider can then
  use this binding information to provision other functional elements
  in their network accordingly (such as the border router).

What would be provisioned by using this binding information?

And also, I am not very sure that I have gotten the true purpose of this solution. If you can elaborate more details, it would be much more better.


[ian] For lw4o6 (and other A+P based softwire mechanisms), the provisioning system for client softwire configuration and the softwire border router (lwAFTR) have to be completely aligned so that traffic can be correctly routed.

If you have dynamic IP address leasing, as is possible with DHCPv4o6, then the border router has to be updated with the current client address leases and also the IPv6 addresses that are being used as tunnel endpoints.

As the DHCPv4o6 server is managing the address leasing, this draft provides a way that it can also store the IPv6 address that it’s clients will use for building their softwire tunnels meaning that there is a single point in the network storing this information. This information will then be used to synchronise the binding table in the border router, although how this is done isn’t in the scope of this draft.

http://datatracker.ietf.org/doc/draft-liu-softwire-lw4over6-dhcp-deployment/ describes the overall architecture in more details.