766 Store&Forward Media Converters
This tissue has following status: final proposal
Created: 13 Jan 2017
Category: Issue for edition 2 of this part
Issue: Store-and-forward media converters introduce an asymmetry in the computation of the delay, since they delay the event messages proportionally to their length, and Sync and Pdelay_Req/Pdelay_Resp have different length. Therefore, Sync arrives earlier than the peer delay computation predicts.
Proposal: P1588 decided to introduce a PAD TLV, that has a length of 10 octets that should be appended to Sync by the master. This is an option that can be checked easily by each node, so the network engineer knows that the delay is calculated correctly.