CPE210 slow when sending VLAN data

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CPE210 slow when sending VLAN data

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CPE210 slow when sending VLAN data
CPE210 slow when sending VLAN data
2024-01-16 18:51:34
Model: CPE210  
Hardware Version:
Firmware Version: 2.2.6 Build 20230907 Rel. 39920 (5553)

I just bought a pair of CPE210 V3.20 to use as a AP/Client pair to connect a separate garage, ~200' away. Both devices have been updated to 

2.2.6 Build 20230907 Rel. 39920 (5553)

 

I'm currently testing them at home, with the devices only a few feet away and pointing towards each other. I have a main router connected to the AP CPE210, and another router configured as AP/switch connected to the CPE210 client. 2 ports on the switch are on main lan, one on vlan 101, one on vlan 102. The CPE210 are configured as 802.11n only, 20/40MHz bandwidth, Max TX rate 15, no MAXtream

 

I'm using a Raspberry PI 3B+ with an iperf3 server to measure the network speed, connected to the AP/switch router. On the two main lan ports, I get speeds of around 82 Mbits/sec, which is as good as I expected conidering the 100MBits/sec ethernet and communication overhead. The weird thing is that, when I connect the RPi 3 to vlan 101 or 102, speed drops to 52 MBits/sec, which is way more than expected.

 

For reference, with the two routers connected directly (no CPE210), the speeds are, respectively, 94 and 89 MBits/sec, so the vlan slows the system down by around 5 MBits/sec. But the CPE210 vlan seems to add another 25 MBits/sec loss on top of it, which seems entirely unreasonable.vlan tags only add 4 bytes to the packet, so should not

 

Is there a way to minimize the data rate loss due to the vlan? 

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3 Reply
Re:CPE210 slow when sending VLAN data
2024-01-17 07:56:18

  @robca 

 

CPE product design is the main long-distance wifi expansion, support for VLAN-passthrough, may be in the performance of the above some losses, should not be overly critical.

In other words, your CPE210 is just a 100M device, maybe a CPE510 has the better performance, just maybe.

Just striving to develop myself while helping others.
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Re:CPE210 slow when sending VLAN data
2024-01-17 17:43:47 - last edited 2024-01-17 18:45:45

  @Virgo thanks for your reply, but maybe I was not clear: the CPE210 meets its specs, and I'm happy with how it works. I also need 2.4GHz due to the better penetration compared to the 5GHz CPE510.

 

What I'm not happy about and I think it's either a bug in the firmware or a configuration issue, is that the CPE210 loses 30% performance with vlan-tagged packets. That is unacceptable considering that a vlan tag only adds 4 bytes to a 1500 bytes packet.

 

How does one log a bug for the CPE210?

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Re:CPE210 slow when sending VLAN data
2024-01-18 03:11:57

  @robca 

 

Of course, submit a ticket email to the technical support team from here.

Just striving to develop myself while helping others.
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