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Re: IP comression - Can this be made optional?



>>>>> "Pyda" == Pyda Srisuresh <suresh@livingston.com> writes:

 Pyda> Hi,

 Pyda> When you have an SA bundle consisting of AH, ESP and
 Pyda> Compression protocols defined for a class of packets, I
 Pyda> understand, the entire SA bundle is required to be applied on
 Pyda> packets in either direction.

 Pyda> However, I believe, it is desirable to make application of some
 Pyda> of the components (of SA bundle) optional. For example, one
 Pyda> might not want to compress small packets (say, less than 64
 Pyda> bytes). I would hate to have packets dropped in bit bucket just
 Pyda> because they are not compressed. What do others think of this?

That's already explicitly allowed.  In fact, it is sometimes required, 
since the IPCOMP spec says you're not allowed to compress something
that gets bigger when compressed.

So the receiver already has to deal with the possibility that an
incoming packet is not compressed even though the bundle has
compression in it.

(Unfortunately, the ESP envelope makes detecting this VERY painful.)

	paul


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