On 2009-11-30 19:47, Hui Deng wrote:
...
> 1) definition of sub-network
> one example could be A: 10.1.1.2 and B: 10.1.1.3, then A knows
> he is in the same sub-network as B.
I am having some trouble with this statement. How does
A know it is in the same *copy* of Net 10 as B? That all
depends where the address of B has come from. If it has come
from a third-party referral, it could be anywhere in the
universe.
You can't rely on the bits in an RFC1918 address to tell
you about adjacency, unless you know for sure that the address
has local scope. In your model, that seems to mean knowing for
sure that B is on the same access router. How does A know that?
Brian
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