On Mon, 2006-07-24 at 18:36 +0530, Dhiren Chandvania wrote:
> Issues that I have:
>
>
>
> I]
>
> All outbound traffic from a Linux machine needs scope id. Why?
Because linux does not implement the concept of "default interface". If
you only have link-local addresses (the ones that start with fe80:) then
you always have to specify a scope id. If you configure addresses with
larger scope, you will _not_ need to always use scope id.
You always have to specify a scope id when you are using a link-local address, because the SAME link-local address might be used by different machines in different links (e.g., you are connected to multiple links - you might find that one machine in each of those links is using that link-local address). This ambiguity thus is resolved when you specify which interface you want to send your message to.
Now, a question I have: for site local addresses, windows machines know which interfaces to forward the packets to, based on matching the "site ID" (it forwards packets out on all interfaces for which the "site ID" is the same as that on the incoming interface). For linux, how does it solve the same problem, i.e., knowing which interfaces are considered to be still within the same site, and which are not? thanks
--
Dr. Daniel Wong
Assistant Professor
Malaysia University of Science and Technology
** check out my book on wireless IP at http://www.must.edu.my/~dwong/book.html **
