[ppml] Fwd: Keeping in reserve
kloch at kl.net
Thu Oct 5 17:11:06 EDT 2006
Iljitsch van Beijnum wrote:
> So what is the downside of simply giving out an additional, non-
> growable prefix when a /48 isn't enough?
This results in involuntary fragmentation just like slow-start
> Or just give out the space that would have been reserved immediately,
> i.e., give out /44s instead of /48s?
That provides more space with which to voluntarily deaggregate. That
could be a feature or a problem depending on your perspective. It could
also be seen as unnecessarily wasteful since /48 is already a very
generous minimum assignment.
I like the bisection method. It provides the maximum ability to expand
delegations without fragmentation. It also removes any perceived
relationship between reserved space and your delegation.
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