The peer-to-peer delay method is an alternative to the more widely used end-to-end
delay method. sfptpd will support both methods with the default being
end-to-end. The delay method is configurable in the sfptpd configuration file.
- The end-to-end delay mechanism:
Delay_Request, Delay_Response - The peer-to-peer delay mechanism:
PDelay_Request, PDelay_Response
When sfptpd is using the end-to-end delay method, it will generate the “Unexpected...” warning if a PDelay_Request message is received.
When sfptpd is using the peer-to-peer delay method, it will generate the “Unexpected...” warning if a Delay_Request message is received.
When peer-to-peer working is used in the network, every PTP node must support and use it.
Mixing end-to-end with peer-to-peer methods is not supported in any PTP domain. All PTP nodes within a PTP domain must use the same method.
When peer-to-peer delay is used every node in the PTP network sends both the PDelay_Request and PDelay_Response messages to the neighboring PTP node.