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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 grandmaster clock. I also have to transfer data between a local server and the PC edge devices. Can I connect the server, PCs, time-cards, and the grandmaster clock using just this one switch? The server and PCs are running real-time Linux.
Or, does the ptp network need to be segregated from the IP traffic and/or non-ptp enabled devices?
I.e. do I need to buy a second network switch which for just the IP traffic?
Follow-up question: can I also connect non-ptp enabled devices to this switch without issue too?
Thanks in advance!
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
2 Replies
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
Thanks for your help! I appreciate it!
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