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Forum Discussion
student_driver
May 30, 2025Follower
Do non-ptp/IP devices need to be segregated?
I'm planning on purchasing the NETGEAR AV Line M4250-9G1F-PoE+ and use it solely for the ptp capabilities. I've purchased several time-stamping cards which require ptp connections from a grandma...
- May 30, 2025
Hi student_driver ,
Thank you considering the NETGEAR AV Line, good choice for your PTP needs.
One switch is enough, you can do everything with it, if enough ports.
Please follow the steps here: https://www.netgear.com/hub/business/av/av-tech-guides/
Running the latest software, please edit the VLAN 1 (default VLAN, also Management VLAN) and apply an AV template to it - Apply, then Save, You can go with any Audio or Video template, all will prioritize the PTP packets and place them in the fastest queue for beating the switch latency and provide very few 100s nanoseconds of jitter that will let your slaves synchronize with your grandmaster clock. Take for instance Audio AES67 - if you need the residency time in the switch updated in the PTP packets (delay_req field), just activate the PTP-TC when applying the Audio AES67 template to your default VLAN 1. Do not create another VLAN, you should stay in VLAN 1. Everything else can run fine, and your PTP packets will be perfect.
I hope this helps,
Laurent
LaurentMa
May 30, 2025NETGEAR Expert
Hi student_driver ,
Thank you considering the NETGEAR AV Line, good choice for your PTP needs.
One switch is enough, you can do everything with it, if enough ports.
Please follow the steps here: https://www.netgear.com/hub/business/av/av-tech-guides/
Running the latest software, please edit the VLAN 1 (default VLAN, also Management VLAN) and apply an AV template to it - Apply, then Save, You can go with any Audio or Video template, all will prioritize the PTP packets and place them in the fastest queue for beating the switch latency and provide very few 100s nanoseconds of jitter that will let your slaves synchronize with your grandmaster clock. Take for instance Audio AES67 - if you need the residency time in the switch updated in the PTP packets (delay_req field), just activate the PTP-TC when applying the Audio AES67 template to your default VLAN 1. Do not create another VLAN, you should stay in VLAN 1. Everything else can run fine, and your PTP packets will be perfect.
I hope this helps,
Laurent
student_driver
May 30, 2025Follower
Thanks for your help! I appreciate it!
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