[Ns-bugs] [Bug 253] ARP does not retry upon loss
bugzilla-daemon at nsnam-www.ece.gatech.edu
Mon Jul 21 10:29:33 PDT 2008
------- Comment #8 from mathieu.lacage at sophia.inria.fr 2008-07-21 13:29 -------
(In reply to comment #7)
> > > 3) use a per-cache timer
> [ ... ]
> > > I really prefer 3 above.
> > I would be fine with this, thanks.
> When I initially thought about the problem I came to the conclusion that a
> per-cache timer would be best; but when I looked at Linux I found per-entry
ok. that's a good data point.
> I believe the primary reason you would swallow this overhead is to avoid a
> "thundering herd" of retries which you could get if you scanned the entire
> cache on a single timer expiration; especially if we were to someday start
> aging the entries in the cache.
It should not be too hard to just fire an update for the first one and defer
the next update to some later time.
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