v6.37 [current] is released!

OSPF with NBMA Still freezing since 6.32.4 (did I test all version after and the last 6.37 (stable)), wheh start all got perfectly, then some minutes running, all interfaces frozen in /routing ospf interface print (not show nothing and still frozen until Ctrl+C then when i reboot all got work for some minutes)
comands that are frozed:
/routing ospf nbma-neightbor print
/routing ospf interface print.

Until this got frozen all work finely.
I got a network running about 35 OSPF Machines in ver 6.32.4 and the only one problem of this version is the time the network take to up again when a big concentrator is rebooted, and some disconects without reason.

All versions after 6.32.4 are doing this problem with NBMA, but in 6.37 i got the frozen in interface print too…

Problem detected in mipsbe, tile and powerpc, other not tested…

Fix Ticket#2014122166000217, for example. It’s very annoynig bug (ROS lost packets when add or remove any type interface). Support promises fix it in v7.

:frowning:
Ticket#2014122166000217

I am not sure, but from that ticket it seems that any issues were fixed, and you received some advice how to improve your setup. The support agent said that other systems work with such number of users.

Normis, issue not fixed (I can create new video with demonstration in any time. Need?).
Proposed workaround - advance create all needed pppoe interfaces. Nice joke - I have about 6000 active pppoe sessions (and about more than 10000 total pppoe clients).

How can I see if DFS is used and how it operates ?
Can someone define “radar detect”, how does the device know it is a radar and how does it distinguish between other wifi network and radars. can it misinterpret ?
Will network and link be less stable using DFS, does anyone have experience of it ?

If your country has an actual government radar operating at a specific frequency, you are usually not allowed to operate in that frequency, this is why RouterOS will listen on the frequencies, defined in your country regulations tables. It ignores other 802.11 devices, there are patterns how it can detect it is a radar, not a wifi device.

The problem is that this does not work very well. This does not appear to be MikroTik-specific, we had issues with TranZeo
and others report issues with Ubiquiti. In some circumstances it works fine, but in some installations there are problems
like “radar detected on all channels” or “spurious radar detection makes it hop after having operated for a long time on some
channel”. After making an incorrect hop, it can take time before it finds a usable channel and it can also land on a channel
in use on another link on the same location, also not what you like. DFS adds an unpredictability to the network that many
operators don’t like, and on top of that it adds service interruptions. Probably lots of users would appreciate if there was some
more intelligent implementation that still can operate within the legal requirements. E.g. the AP compiles a channel list
in non-volatile memory about detected radar events and the confidence in them, and picks the used channel from the list
of channels without radar in a way that allows the operator some control. (e.g. there are 5 channels without radar, then
the operator can select a preferred channel of operation and the AP will only leave that when it detects new radar on that
channel with high confidence, and will move only to another channel which it has not in its list of radar channels with high confidence,
and maybe some priority list or even interaction with other APs on the same location could be possible)

There should also be some handling of “radar on all channels”, e.g. look more closely to the reported events and try to filter
them better for radar/other interference. An AP should not end up in indefinite hopping because of DFS.

We always continue to improve the wireless driver, and since DFS is now mandatory, we will of course dedicate more time to improve it as well.
Keep reporting any issues you see and send them to support@mikrotik.com

As a workaround, you can use a different country setting or superchannel mode to go back to no-dfs, but I recommend not doing this in certain countries.

Framed-IPv6-Prefix not work.

Hello Normis!
Have you then ensured the DFS settings you enforce by country follows also my country (Sweden), not all the frequencies should have DFS in my country.

Swedish PTS (http://pts.se) says the following regarding 5GHz band (I can ask them for an official documentation about it, what is available on their website is in Swedish):
Channel: 36, 40, 44, 48 Frequency: 5,17-5,25GHz Low Band, max 200mW, no DFS
Channel: 52, 56, 60, 64 Frequency: 5,25-5,35GHz Middle Band, max 200mW, no DFS
Channel: 100-140 Frequency: 5,47-5-725GHz H-Band, Max 1 W ERP. DFS & TPC
Channel: 149, 153, 157, 161, 165 Frequency: 5,725-5,875GHz High Band, Max 25 mW no DFS no TPC

I would like to be able see the actual settings for each frequency in the router board, how do I do that ?

You can see which frequencies are coded in the driver with this command:

[admin@MikroTik] > interface wireless info country-info
country: sweden
  ranges: 2402-2482/b,g,gn20,gn40(20dBm)
          2417-2457/g-turbo(20dBm)
          5170-5250/a,an20,an40,ac20,ac40,ac80,ac160(20dBm)/passive,indoor
          5250-5330/a,an20,an40,ac20,ac40,ac80,ac160(23dBm)/dfs,passive
          5490-5710/a,an20,an40,ac20,ac40,ac80,ac160(27dBm)/dfs,passive
          5190-5310/a-turbo(20dBm)/dfs
          5180-5300/a-turbo(20dBm)/dfs
          5520-5680/a-turbo(27dBm)/dfs,passive
          5510-5670/a-turbo(27dBm)/dfs,passive
          902-927/b,g,g-turbo,gn20,gn40(30dB

We keep the settings up to date.

edit: for short range devices (srd), in EU, you can use this country legally:

[admin@MikroTik] > interface wireless info country-info "etsi 5.7-5.8 srd"
  ranges: 5725-5875/a,an20,an40,ac20,ac40,ac80,ac160(14dBm)/outdoor

edit2: we use 27 instead of 30dbm, because RouterOS does not support TPC

Is TPC support on the RouterOS roadmap?

My upgrade went well but the problem I have is that I can not disable wireless package, that is I can flag it for disablement but after reboot it is enabled again.

Yeap, same here.

Looks ok, except that you have DFS on:
Channel: 52, 56, 60, 64 Frequency: 5,25-5,35GHz Middle Band, max 200mW, no DFS

Which says no DFS, why ?

Hello Normis!

I do not get same result as you when checking for DFS:

[admin@liuyun] > interface wireless info country-info
country: sweden
ranges: 2402-2482/b,g,gn20,gn40(20dBm)
2417-2457/g-turbo(20dBm)
5170-5250/a,an20,an40,ac20,ac40,ac80,ac160(20dBm)/passive
5250-5330/a,an20,an40,ac20,ac40,ac80,ac160(23dBm)/passive
5490-5710/a,an20,an40,ac20,ac40,ac80,ac160(27dBm)/passive
5190-5310/a-turbo(20dBm)
5180-5300/a-turbo(20dBm)
5520-5680/a-turbo(27dBm)/passive
5510-5670/a-turbo(27dBm)/passive
902-927/b,g,g-turbo,gn20,gn40(30dBm)

[admin@liuyun] > system package print
Flags: X - disabled

NAME VERSION SCHEDULED

0 multicast 6.37
1 routeros-mipsbe 6.37
2 system 6.37
3 ipv6 6.37
4 wireless 6.37
5 X hotspot 6.37
6 dhcp 6.37
7 X mpls 6.37
8 routing 6.37
9 ppp 6.37
10 security 6.37
11 advanced-tools 6.37

Bug: extension channel eeCe and eCee are reversed on winbox wireless/channels (or are reversed on terminal???)

Bug (yes): removed DFS choice: Is more simple block dfs settings to country settings, like now on 6.37, but give the possibility to create un-Lockpack for set dfs as wanted…
How I can use now DFS without radar detect on selected wireless/channels???
How I can use now DFS with radar detect on other channels not on country-list???

O - thank god for your post re superchannel

This info is great !

I have one of my towers that has a 2-million+ watt radar system near-by (a couple hundred feet away). When it hits my APs, almost all channels on all bands take a quick blink.
FYI - By all bands - I literally mean 700 MHz, 900 MHz, 2.3 GHz all the way up through 6 GHz. The bleed over on all channels is totally crazy !!!
FYI - the EMI/RFI noise is so high - that even an Ethernet cable tester shows there is traffic on the cable, although I am standing there with both ends of the cable in my hands with an Ethernet cable tester connected to the cable !!!



North Idaho Tom Jones

After upgrade CHR 6.36.3 → 6.37 on Hyper-V Router OS dont work properly. Ethernet dont work. System crashes when any manipulation with Ethernet. Clean image vhdx don`t work too.