RE: Ordered and unordered SPD in draft-ietf-ipsec-rfc2401bis-01

[Stephen Kent <kent@bbn.com>]

At 20:01 -0800 3/2/04, Charlet, Ricky wrote:
>Howdy,
>
>	Could the flow cashing and decorrelated SPD be implementation
>suggestions?
>
>	I feel implementers should have the freedom to achieve the
>effect of an ordered SPD search in what ever internal mechanism they
>choose. Flow cashing, while a very good idea for processing efficiency,
>is not an interoperability issue. And it may not be the only or even the
>best idea for processing efficiency (though I can't think of others).
>
>	RFC 1812, section 5.2 hinted at a cashing suggestion but only
>required implementers to achieve the effect of a search algorithm while
>specifically allowing impelmentors to innovate (see section 5.2.1). I
>think similar language could be used here.

There is no requirement to decorrelate the SPD or to cache, and the 
text says that. I just found it much easier to describe the flow 
based on the use of caches, which implied decorrleation.

Steve