Transparent clock in E4G 16.2 EXOS

[Attila_Horvath]

Hi all, There is an interesting question regarding L2 multicast transparent clock. We have an Calnex ParagonX as a PTP source. The connected E4G-400 switches works properly with 15.2 EXOS. The switch modifies the correction field's value. After upgrade to 16.2 version, the switch does not modify the correction field's value. The source is: L2 multicast, one step, untagged, forwardable dest MAC. The upgrade is absolutly necessary for other reason. Has anyone solution for this issue? Relevant configuration lines: configure vlan G8275 add ports 1-34 untagged ... create network-clock ptp end-to-end-transparent configure network-clock ptp end-to-end-transparent add ports 1 one-step enable network-clock ptp end-to-end-transparent ports 1 configure network-clock ptp end-to-end-transparent add ports 2 one-step enable network-clock ptp end-to-end-transparent ports 2 Thanks in advice! Best Regards, Attila

[Attila_Horvath]

Hi Chad,

Sorry for the late!
Thank you for your answer!

Best Regards,
Attila

[Chad_Smith1]

Attila,

Unfortunately, L2 multicast PTP isn't supported, even for PTP end-to-end transparent clock mode. It very well may have worked in 15.2, but it wasn't/isn't officially supported.

https://gtacknowledge.extremenetworks.com/articles/Q_A/Does-EXOS-support-any-PTP-multicast-operation