topic RE: Transparent clock in E4G 16.2 EXOS in ExtremeSwitching (Other)

Transparent clock in E4G 16.2 EXOS

Attila_Horvath — Sat, 31 Mar 2018 19:13:00 GMT

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

RE: Transparent clock in E4G 16.2 EXOS

Chad_Smith1 — Tue, 03 Apr 2018 01:15:00 GMT

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

RE: Transparent clock in E4G 16.2 EXOS

Attila_Horvath — Tue, 17 Apr 2018 20:28:00 GMT

Hi Chad,

Sorry for the late!
Thank you for your answer!

Best Regards,
Attila