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Forum Discussion
Netgear switch VLAN PCP support
Hi there, I'm wondering if theGS108 Netgear switch has hardware support for the PCP in the VLAN tag? My guess is no, but I want to hear from the experts here. Below is my experiments: Setup: ...
Hi newgear12,
I cannot reproduce the situation you mentioned.
Could you help to provide the following items? It will help to reproduce the situtation. Thanks
1, provide 2 MAC address of the 2 PCs that send UDP streams. Indicate which PC you expect to get higher priority and bandwidth.
2, enable mirror features on GS108Ev3. Send the 2 UDP streams into GS108Ev3 as you did. Use Wireshark to capture 2 UDP streams from GS108Ev3. Provide packet capture file.
3, provide topology chart, which PC is connected to which port, including sender PCs and receiver PC.
4, provide your configuraiton file
Hi WilsonS, thanks for the reply.
What I tried to experiment with is to reproduce the setup shown here:
https://github.com/NXP/dds-tsn/
I wanted to use the Netgear switch in the setup instead of the specific TSN ethernet switch. But the prioritization didn't work, which I described earlier.
Sorry I cannot provide the information you asked in short term, because of other urgent things.
But I'll be interested to know if you can create two iperf streams with PCP & link speed limit configuration as described in the repo, and see the bandwidth difference of the two streams.
Will provide you the documents once I get around working on it again.
The priortisiation does work, unless you enforce the hard speed limit - this isn't a IEEE 802.1Qav Credit-Based Shaper (
CBS) as shown in that experiment.You are right. The hard speed limit is not used as a CBS, but simply to make the PCP effect much more visible in the Gazebo simulator.
You are also right about the issue I have. And I think the netgear switch should support the PCP + speed limit configuration. They are not two contradictory settings.
Scratch the port speed limit and leave it open, and use a network cable with just two pairs - this will make the switch auto-negotiate to max 100 Mb/s. Now re-test.
newgear12 wrote:
And I think the netgear switch should support the PCP + speed limit configuration. They are not two contradictory settings.
Agree on that, exactly the first thought I had, too. That's why I had challenged Netgear before on this.
The point is that this is some 0.00x% use case, more academic or lab style then real networking.
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