hAp ac²: link is extremely unstable on high load

Hardware MikroTik hardware general
1

Hello. There is a big problem with my new hAp ac². I started iperf between 2 hosts on the same vlan, and link is periodically disappears.

$ iperf3 -t 60 -c 10.175.0.100
Connecting to host 10.175.0.100, port 5201
[  4] local 10.175.0.2 port 38422 connected to 10.175.0.100 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   112 MBytes   943 Mbits/sec    0    321 KBytes       
[  4]   1.00-2.00   sec   112 MBytes   939 Mbits/sec    0    342 KBytes       
[  4]   2.00-3.00   sec   112 MBytes   941 Mbits/sec    0    342 KBytes       
[  4]   3.00-4.00   sec   112 MBytes   942 Mbits/sec    0    342 KBytes       
[  4]   4.00-5.00   sec   112 MBytes   941 Mbits/sec    0    397 KBytes       
[  4]   5.00-6.00   sec   111 MBytes   930 Mbits/sec    0    458 KBytes       
[  4]   6.00-7.00   sec   112 MBytes   941 Mbits/sec    0    458 KBytes       
[  4]   7.00-8.00   sec   112 MBytes   941 Mbits/sec    0    458 KBytes       
[  4]   8.00-9.00   sec   112 MBytes   937 Mbits/sec    0    482 KBytes       
[  4]   9.00-10.00  sec   112 MBytes   941 Mbits/sec    0    482 KBytes       
[  4]  10.00-11.00  sec   112 MBytes   941 Mbits/sec    0    482 KBytes       
[  4]  11.00-12.00  sec   112 MBytes   941 Mbits/sec    0    482 KBytes       
[  4]  12.00-13.00  sec   111 MBytes   929 Mbits/sec    0    725 KBytes       
[  4]  13.00-14.00  sec   112 MBytes   941 Mbits/sec    0    725 KBytes       
[  4]  14.00-15.00  sec   112 MBytes   941 Mbits/sec    0    725 KBytes       
[  4]  15.00-16.00  sec   112 MBytes   941 Mbits/sec    0    725 KBytes       
[  4]  16.00-17.00  sec   112 MBytes   941 Mbits/sec    0    725 KBytes       
[  4]  17.00-18.00  sec   112 MBytes   939 Mbits/sec    0    725 KBytes       
[  4]  18.00-19.00  sec   112 MBytes   941 Mbits/sec    0    725 KBytes       
[  4]  19.00-20.00  sec   112 MBytes   941 Mbits/sec    0    725 KBytes       
[  4]  20.00-21.00  sec   112 MBytes   941 Mbits/sec    0    725 KBytes       
[  4]  21.00-22.00  sec   112 MBytes   942 Mbits/sec    0    725 KBytes       
[  4]  22.00-23.00  sec   103 MBytes   866 Mbits/sec    0   1.07 MBytes       
[  4]  23.00-24.00  sec  0.00 Bytes  0.00 bits/sec    2   1.41 KBytes       
[  4]  24.00-25.00  sec  0.00 Bytes  0.00 bits/sec    1   1.41 KBytes       
[  4]  25.00-26.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
[  4]  26.00-27.00  sec  0.00 Bytes  0.00 bits/sec    1   1.41 KBytes       
[  4]  27.00-28.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
[  4]  28.00-29.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
[  4]  29.00-30.00  sec  0.00 Bytes  0.00 bits/sec    1   1.41 KBytes       
[  4]  30.00-31.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
[  4]  31.00-32.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
[  4]  32.00-33.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
[  4]  33.00-34.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
[  4]  34.00-35.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
[  4]  35.00-36.00  sec  0.00 Bytes  0.00 bits/sec    0   1.41 KBytes       
[  4]  36.00-37.00  sec  11.3 KBytes  92.7 Kbits/sec    1   14.1 KBytes       
[  4]  37.00-38.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  38.00-39.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  39.00-40.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  40.00-41.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  41.00-42.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  42.00-43.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  43.00-44.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  44.00-45.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  45.00-46.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  46.00-47.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  47.00-48.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  48.00-49.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  49.00-50.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  50.00-51.00  sec  0.00 Bytes  0.00 bits/sec    0   14.1 KBytes       
[  4]  51.00-52.00  sec  37.3 MBytes   313 Mbits/sec  766    189 KBytes       
[  4]  52.00-53.00  sec   112 MBytes   941 Mbits/sec    0    262 KBytes       
[  4]  53.00-54.00  sec   112 MBytes   941 Mbits/sec    0    310 KBytes       
[  4]  54.00-55.00  sec   112 MBytes   942 Mbits/sec    0    378 KBytes       
[  4]  55.00-56.00  sec   112 MBytes   941 Mbits/sec    0    378 KBytes       
[  4]  56.00-57.00  sec   110 MBytes   926 Mbits/sec    0    438 KBytes       
[  4]  57.00-58.00  sec   112 MBytes   941 Mbits/sec    0    461 KBytes       
[  4]  58.00-59.00  sec   112 MBytes   939 Mbits/sec    0    461 KBytes       
[  4]  59.00-60.00  sec   112 MBytes   941 Mbits/sec    0    461 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-60.00  sec  3.42 GBytes   490 Mbits/sec  772             sender
[  4]   0.00-60.00  sec  3.42 GBytes   489 Mbits/sec                  receiver

iperf Done.

At this time in the logs there are such messages:

May/02/2018 03:24:50 interface,info ether4 link up (speed 1G, full duplex)
May/02/2018 03:26:13 interface,info ether1 link down
May/02/2018 03:26:13 interface,info ether2 link down
May/02/2018 03:26:13 interface,info ether3 link down
May/02/2018 03:26:14 interface,info ether4 link down
May/02/2018 03:26:16 interface,info ether1 link up (speed 100M, full duplex)
May/02/2018 03:26:16 interface,info ether2 link up (speed 1G, full duplex)
May/02/2018 03:26:16 interface,info ether3 link up (speed 100M, full duplex)
May/02/2018 03:26:17 interface,info ether4 link up (speed 1G, full duplex)

There is no ether5 in the log, but that’s because nothing is connected to it. Looks like switch chip is restarting. The problem is gone if I enable VLAN Filtering but this is not a good solution.
It is a hardware or software problem?

2

Maybe bad power supply…

3

Check whether the temperature is high, the temperature of this equipment is very unreasonable

4

Check whether the temperature is high, the temperature of this equipment is very unreasonable

Device doesn’t support hardware monitoring, I do not want to disassemble the device, so as not to lose the warranty. But the thought of overheating also occurred to me.

5

During the occurrence of a problem, the indicators on the front panel of the router cease to light.

6

Wow, it’s strange, if I run iperf3 on Windows, the problem does not arise, but if I run it on Linux this is 100% leads to a problem.

7

Linux driver issue, most likely. Try some other devices

8

Linux driver issue, most likely. Try some other devices

Linux driver issue lead to a restart of all network interfaces on the router?

9

Sorry, I saw “link disconnects” as the issue. In this case, enable wireless debug logs and make supout.rif file and email support.

10

Sorry, I saw “link disconnects” as the issue. In this case, enable wireless debug logs and make supout.rif file and email support.

wireless? This happens with wired interfaces. I have already created a ticket, and now I created new supout.rif with enabled debug, and sent it.