60Ghz Bug May - Could be..

RouterOS Wireless Networking
1

WAP60Ghz AP Providing connectivity to 3 Units.

From what I can tell the links are dropping and reconnecting regularly as can be seen in the log.. but as soon as you login to the unit (ignore the dude attempts). The drops stop.
log.PNG
Capture60ap2.PNG
Capture60ap.PNG
Config is pretty basic..

/interface bridge
add admin-mac=C4:AD:34:DC:20:B9 auto-mac=no comment=defconf name=bridge
/interface ethernet
set [ find default-name=ether1 ] mtu=1598
/interface w60g
set [ find ] disabled=no frequency=58320 mtu=1598 name=
“wlan60-AP SouthSide Lower” password=xx put-stations-in-bridge=
bridge region=eu ssid=bs05_south.card
/interface w60g station
add mac-address=C4:AD:34:DC:20:BA mtu=1598 name=wlan60-station-ADCabin parent=
“wlan60-AP SouthSide Lower” remote-address=48:8F:5A:B7:EC:34
add mac-address=C4:AD:34:DC:20:BA mtu=1598 name=wlan60-station-CovidTest
parent=“wlan60-AP SouthSide Lower” remote-address=C4:AD:34:CE:90:1B
add mac-address=C4:AD:34:DC:20:BA mtu=1598 name=wlan60-station-Training
parent=“wlan60-AP SouthSide Lower” remote-address=C4:AD:34:CE:90:1D
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/snmp community
set [ find default=yes ] name=xx
/user group
set full policy=“local,telnet,ssh,ftp,reboot,read,write,policy,test,winbox,pass
word,web,sniff,sensitive,api,romon,dude,tikapp”
/interface bridge port
add bridge=bridge comment=defconf interface=ether1
/ip neighbor discovery-settings
set discover-interface-list=!dynamic
/ip dhcp-client
add disabled=no interface=bridge
/snmp
set contact=tripod@bitbahn.io enabled=yes location=“MK42 0TF”
/system clock
set time-zone-name=Europe/London
/system identity
set name=bs05-south.link.card.bitbahn.net
/system routerboard settings
set auto-upgrade=yes
[support.bb@bs05-south.link.card.bitbahn.net] >

Any thought’s?? We do have other 60G links in the area, all are not in LOS and have buildings in the way. The difference is that are all PTP’s not PTMP.

Cheers

Lee

2

Signal level is not great, might be better choosing a higher frequency channel.

Also not clear which routeros version you are running, some versions are more stable than others, and there have been quite a lot of fixes listed in the changelogs.

Regards
Nick

3

Latest Version 6.48.1 - Stable, I’ve changed the frequency now and it seems better.. It was just the strange thing of when logged into the AP it stopped the link drops.

4

We have the same problem. Answer from support:

Hello,

Currently our suggestion is to try multiple frequencies, alignment.
On wAP 60Gx3 AP - /interface w60g set 0 mdmg-fix=yes
We are still investigating what could be the cause of this.

About the frequencies -

The existing range resonates in the oxygen molecules, even at distances that is relatively small, but:
*) the equipment will work better in places higher above the sea level (lower amount of oxygen in the atmosphere )
*) frequency channels have different characteristics - higher the channel is attenuated much less (with 64800 and 66000 channels you can achieve several times longer distances compared to 58320 and 62640)
*) Relative amount of low temperature oxygen is higher - increases attenuation.

Thank you for your reports on the issue, we are doing our best to provide the best solution.

5

Hi.

  1. The most stable ROS 6.44.6.
  2. For the best results try to change frequency to 6600 (you know, oxygen):
    a) Client
    interface w60g
    set scan-list=58320,60480,62640,64800,66000 numbers=0
    b) AP
    /interface w60g
    set frequency=66000 numbers=0

After that, all parameters should be better, even in the rain :slight_smile:

6

I wish I could downgrade to 6.44.6 but my WAP60Gx3 factory firmware is 6.45.8. So I’m stuck. My WAP60Gx3 to two WAP60G stations seems better since I changed the frequency to 64800. All three are running 6.48.1 with the mdmg-fix=yes. I don’t see an option for 66000.