Definitely important issues for some synchronization protocols but it seems though two-step 1588 would work through such a connection. The followup message will contain an accurate (and encrypted) timestamp. Encryption delays would not result in significant loss of accuracy with respect to an unencrypted connection also using two step.
Kevin Gross On Thu, Oct 13, 2011 at 8:43 AM, Danny Mayer <[email protected]> wrote: > On 9/18/2011 9:41 PM, Cui Yang wrote: > IEEE-1588 (PTP) also cannot benefit from this as it is basically a > hardware-stamping protocol and now you are routing it through a software > tunnel which means it has to be timestamped before it is IPsec > encapsulated which decreases it's accuracy. It's no longer on-wire. >
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