Basavaraj Patil wrote:
Ignoring cellular hosts for a moment, how are periodic RAs useful for any
host? RAs can be used as a means for detecting network attachment status or
to detect movement (prefix change). In the case of a stationary host (as an
example), periodic RAs really are of no benefit to the host (IMO).
A design principle for many Internet protocols is known as "soft state".
I wonder if that might have something to do with the periodic RAs ;-)
If the hosts would keep the information received until it being
explicitly invalidated we would probably end up with a more complex
and/or more fragile approach to handle the stale state. Hence the soft
state approach.
Erik
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