Re: [DNA] Re: LinkID v.s. Landmark Prefix

[Sathya Narayanan <sathya@research.panasonic.com>]

Erik -

> So it seems like until every link in the Internet supports DNA (it isn't 
> clear to me whether all routers on every link needs to support DNA, or 
> whether it is sufficient to have one per link support it),
It isn't clear to me either. But, IMHO, we should select a solution which works well in a link with both DNA and non-DNA routers.

> then the hosts MUST rely on a reliable link up notification in order to always be 
> able to detect movement. Is that correct?
We discussed this when the comparison slide sent by Greg was prepared. A CompleteRA message from the DNA router can tie all the prefixes on the link together and hence the host need not depend on link-up notification. Also, with prefix-landmark, if the host sends an RS with a prefix advertised by a non-DNA router, a DNA router will still confirm the prefix's presence on the link.

- Sathya