upgrading killed the bandwidth?

RouterOS General
1

upgrading this router from 2.8.19 to beta13 killed a 66Mbps TCP to 6Mbps, need to find out why, maybe need to reset the wireless configs.

Any idea why upgrading the router killed the bandwidth?
It is a 5GHz test link in the lab, I upgraded the “station WDS” end, the AP is 2.8.19. Both running Nstreme, bridged using WDS.
Was working fine until the upgrade. It has good signal levels -28/-33dB both ends.
I could change the other end too, but would appreciate some feedback if anyone else spotted this

Regards

2.9rc5 on RB532 w/Atheros 200mw cards
2

write to support with a supout.rif file … if it’s a P2P link, then files from both ends

3

Hi will do,

Just to let you know, we downgraded to 2.8.23 and it’s back up to 79megabits UDP again …

Need to look into whether the beta is at fault or whether it’s a problem of beta/non-beta not playing ball with each other

Regards

4

If you are using AR5213 I supose that the workarounds made in 2.8.xx are not included (tully replied to this problem before a month)

5

Thanks for the tip ASM, worth MT checking that also

Actually we are using AR5211 and 5212 bought from Mikrotik :slight_smile:

Best regards

6

Just tested such configuration and it is working fine. Maybe you have some specific wireless configuration. You could send the support output files from both routers to support@mikrotik.com
We will check where could be the problem.

7

We found this problem, it will be fixed in next release of v2.9.
If someone need a package for the v2.9beta13 then email to support@mikrotik.com

8

Hi there

I have the beta fix package, and it’s still not fixed the problem it seems.
With Nstreme enabled I get 6Mbps, turning it off I get 50+Mbps
CPU is 600MHz Pentium M one end, AMD 1.1GHz the other
I’ll send in the supout files just now.

Really looking forward to getting this beta working - everything else is great

Regards

9

Tried again with Beta14

Same result, 8-9Mbps throughput with EM9-AB radio card.

I think it’s the 5212 radio and Nstreme that are not working together.

Regards

10

OK after a lot of testing, various HW platforms (1GHz and 600MHz CPUs)and various versions of beta and non-beta including the latest, with Atheros 5211 radio cards in turbo and non-turbo mode the conclusions are:

  • Nstreme and 2.9Beta do not work together properly. I only get 9Mbps

With Nstreme turned off, 2.9beta works OK - 30+Mbps
with it on, I only get 9Mbps throughput

With 2.8.26, I get 72Mbps throughput in turbo mode with Nstreme on. No problems at all.

I’ve described this before, submitted sup-output files and the response was that the situation could not be repeated.
Anyone else seen this or got any ideas?

Regards