Problems with PTPv2 on X440G2

[Piotr_P2]

I have a problem with the synchronization of Unify base stations over the PTPv2 protocol on the X440-G2 switches. These stations synchronize with each other, one of them is the reference clock. Do these switches support PTP. I found information that only the X460G2, X670G2 and X770 switches support PTP.

[John_Dave_Thurl]

Hi there,  I hab the same problem with Unify OpenScape Cordless IP v2 DECT Stations.

On EXOS 21.1.3.7 everything worked well....Master antenna und slave antennas are in sync..

and now on EXOS 31.xx they always lose their sync status after some minutes.

First i thought of an multicast problem, but there weren't any problems that found.

In this article:

https://extreme-networks.my.site.com/ExtrArticleDetail?an=000079685

they say that they removed ptpv2 support, but form different models. I use the X440-G2.

Is the missing ptpv2 support my problem, that 4 clients in the same VLAN on the same switch can't sync anymore???

Regards

John Dave

[Piotr_P2]

I managed to solve this problem with setting a local SNTP server.
All devices:  switches and Voip Base Stations are synchronized to the  local SNTP without routing.
Before that, all devices were synchronized to different external time servers.

[Piotr_P2]

Thank you for your answer. I am going to do a lab and take a closer look at the problem.

[StephanH]

There are some bugs reported with 22.x, therefore use one of the newer releases.