Community discussions

MikroTik App
 
User avatar
mktwifi
Frequent Visitor
Frequent Visitor
Topic Author
Posts: 81
Joined: Wed Oct 15, 2008 9:45 am

Throughput and CCQ decrease when traffic increase wireless N

Fri Aug 28, 2009 1:30 pm

Hi guys,
i have a ptp link with two RB600 with R52N card and two Pac Wireless dual polarized antenna: signal is good (about -65 dbm) and also CCQ and throughput (see wirelessn1.jpg) but when i execute a bandwidth test (not from routerboard but from two PC that are connected directly on routerboard), CCQ and also throughput go down (see wirelessn2.jpg): why?
May be an antenna problem? I try to change a lot of field (disable nstream, disable noise immunity, ecc.) in wireless configuration but problem persist. I also try to use only one chain but never.

Please help me!

Best regards
You do not have the required permissions to view the files attached to this post.
 
aaa
Member
Member
Posts: 458
Joined: Mon Apr 11, 2005 11:54 am
Location: Latvia, Baltezers

Re: Throughput and CCQ decrease when traffic increase wireless N

Mon Aug 31, 2009 9:55 am

I have same problem , it seems TCP traffic kill CCQ. With UDP I have stable ~ 150mbit half duplex.
 
User avatar
mktwifi
Frequent Visitor
Frequent Visitor
Topic Author
Posts: 81
Joined: Wed Oct 15, 2008 9:45 am

Re: Throughput and CCQ decrease when traffic increase wireless N

Mon Aug 31, 2009 1:20 pm

Also with UDP traffic there is ccq and througthput decrease problem.
Could be a routerOS problem? Or a dualpol antenna isolation problem?

I hope someone help us.

Regards
 
aaa
Member
Member
Posts: 458
Joined: Mon Apr 11, 2005 11:54 am
Location: Latvia, Baltezers

Re: Throughput and CCQ decrease when traffic increase wireless N

Mon Aug 31, 2009 2:50 pm

I use two 5G/522F flat panel on each side.I think it is not isolation problem.
 
User avatar
mktwifi
Frequent Visitor
Frequent Visitor
Topic Author
Posts: 81
Joined: Wed Oct 15, 2008 9:45 am

Re: Throughput and CCQ decrease when traffic increase wireless N

Mon Aug 31, 2009 3:28 pm

And so, what is the problem?
Is there anyone that has this problem?

Help please

Regards
 
mh1
just joined
Posts: 6
Joined: Sat Jun 09, 2007 1:01 pm

Re: Throughput and CCQ decrease when traffic increase wireless N

Mon Aug 31, 2009 3:39 pm

And the same is here. Cannot get normal TCP throughput.
I'm afraid that this is a little bit unfinished yet.
Probably will try Ubiquiti new bullet5 M.
 
User avatar
mktwifi
Frequent Visitor
Frequent Visitor
Topic Author
Posts: 81
Joined: Wed Oct 15, 2008 9:45 am

Re: Throughput and CCQ decrease when traffic increase wireless N

Tue Sep 01, 2009 6:13 pm

Hi guys,
today I try, in an indoor test environment, with other two routerboard (RB411) with wireless N card and a 17 dbi flat panel antenna on each side (so with only one chain enable) but problem persist: when traffic increase ccq and througthput go down!

I think it is a RouterOS or a R52N problem: is it possible?

Help is appreciate

Thanks in advance

Regards
 
User avatar
NetworkPro
Forum Guru
Forum Guru
Posts: 1376
Joined: Mon Jan 05, 2009 6:23 pm
Location: bit.ly/the-qos
Contact:

Re: Throughput and CCQ decrease when traffic increase wireless N

Wed Sep 02, 2009 6:37 am

Too bad the R52Ns don't support turbo either so we cant properly use them in 11a turbo + nstreme mode either. Too bad.
 
User avatar
mktwifi
Frequent Visitor
Frequent Visitor
Topic Author
Posts: 81
Joined: Wed Oct 15, 2008 9:45 am

Re: Throughput and CCQ decrease when traffic increase wireless N

Wed Sep 02, 2009 7:06 pm

Hi guys,
this morning I tried, in an indoor test environment, with other two routerboard (RB433AH) with wireless N card (R52N) without antenna connected and I didn't have CCQ and througthput problem: I had 120 Mbps TCP aggregate througthput!
Then this afternoon I install the routerboard RB433AH in an outdoor link (20 km) and in this case CCQ and througthput go down...sigh :-( !
I tried to enable only 20 Mhz channel with nstream and 40 Mhz channel without nstream, but problem persist!

Could anyone help me please?

Thanks

Regards
 
nranieri
newbie
Posts: 30
Joined: Mon Jan 02, 2006 9:39 pm

Re: Throughput and CCQ decrease when traffic increase wireless N

Thu Sep 03, 2009 7:24 am

Unless I am missing something, you did not mention the frequency you are using. I have seen this issue before and usually attribute it to radio contention. Especially if you are talking about 2.4ghz with only 3 available channels. If already using 5ghz, a different channel may help. A frequency usage test on both sides would be useful.
 
User avatar
mktwifi
Frequent Visitor
Frequent Visitor
Topic Author
Posts: 81
Joined: Wed Oct 15, 2008 9:45 am

Re: Throughput and CCQ decrease when traffic increase wireless N

Fri Sep 04, 2009 5:51 pm

Hi,
I am using a 5 Ghz frequency, and I have just tried a lot of frequency with same result.

Regards
 
Muzaki
Frequent Visitor
Frequent Visitor
Posts: 53
Joined: Wed May 13, 2009 3:12 pm
Contact:

Re: Throughput and CCQ decrease when traffic increase wireless N

Mon Sep 21, 2009 2:50 pm

I know it's an old topic, but did you solve the problem?
 
anghelescu
just joined
Posts: 3
Joined: Tue Sep 22, 2009 10:10 am

Re: Throughput and CCQ decrease when traffic increase wireless N

Tue Sep 22, 2009 10:20 am

hello, i hope that we solve the problem. to transport data between to rb433ah an r52n card we use EOIP and a bridge between ether1 and eoip, and when we make high traffic, the signals up/down very much, it is no stable. but if we disabled the eoip, and we make bridge between ether1 and wlan1, it is ok, tha signals is fluctuating, but the link in not disconnect, and the CCQ parameter remain high, 85-95%....the wlan1 we make it station pseudobridge so we can add it to the bridge. i want to try it too so if we see that we solve the problem.
 
anghelescu
just joined
Posts: 3
Joined: Tue Sep 22, 2009 10:10 am

Re: Throughput and CCQ decrease when traffic increase wireless N

Tue Sep 22, 2009 10:23 am

our link is at 35km, we try 40M full duplex, at 5.xGHz, and for the moment is ok...we hope that after 2-3 days the result it will be the same...

Who is online

Users browsing this forum: No registered users and 2 guests