Catalyst 9500 PTP in multiple VLANs

[evabeemation]

Hi guys!

We just got a Cisco C9500-48Y4C. We gonna mainly use is as our Core Switch for ST2110 and AES67 traffic.

We got an external PTPv2 Grandmaster. The Cisco switch should work as PTP boundary clock.
Unfortunately it seems like Cisco only supports PTP in one VLAN at a time. Not only that, but the switch blocks PTP in all other VLANs.

The documentation says: "In boundary mode, only PTP packets in PTP VLAN will be processed, PTP packets from other VLANs will be dropped."

This makes the switch practically unusable for us.
Does anyone know if there is a way around this?

Ideal scenario would be to use PTP in multiple VLANs at the same time with different profile settings. All referenced to the external Grandmaster. Just like Nvidia does it.

Thanks

[balaji.bandi]

what IOS XE code running - check Limitations and configuration - try adding another ptp for each vlan ?

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9500/software/release/17-7/configuration_guide/lyr2/b_177_lyr2_9500_cg/configuring_precision_time_protocol__ptp_.html

17.13.X have different features :

not sure is the Limited to IE switches, but i am in guess they should be widely all IOS XE devices :

https://www.cisco.com/c/en/us/td/docs/switches/lan/cisco_ie3X00/software/17_4/b_system-management-ie3x00/m-changing-vlans-tc.html

[chlapp]

I know i am late coming to this thread. 
but that statement in the config guide is misleading. 

we only do PTP in one vlan *per interface*, this means that the PTP instance of the interface only processes messages in a single vlan. if you have other interfaces, on other vlans, they will have their own PTP instance, and will be in whatever vlan that interface is set as access to. in the case of trunk interfaces, you pick which vlan you want to put ptp on (i suggest picking a vlan that doesn't have any media devices on it).