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MUM Europe 2020

Search found 13 matches

by zreno
Thu May 27, 2010 2:07 pm
Forum: Wireless Networking
Topic: MIMO with two different antennas
Replies: 1
Views: 824

MIMO with two different antennas

Hi, has anybody tried running 802.11n 2x2 MIMO with two different antennas? This configuration is interesting when you want to have a wider signal coverage which you cannot accomplish just by using single antenna type due to the limited antenna patterns. For example, I'm using 3 dB omni antenna whic...
by zreno
Fri Apr 02, 2010 3:51 pm
Forum: Scripting
Topic: Running a script from API
Replies: 4
Views: 2096

Running a script from API

Hi, I'm having problems with running a script from Python API. Lets say the script is called "temp". Through Winbox terminal I'm running the script using following command: /system script run temp According to manual, in API one should call the same script using: /system/script/run =name=temp Howeve...
by zreno
Tue Mar 30, 2010 3:57 pm
Forum: Scripting
Topic: Logging latency and packet loss?
Replies: 1
Views: 757

Logging latency and packet loss?

Hi, I'm trying to log link parameters (e.g. throughput, signal strength, ccq) to a file (using remote syslog) for later analysis and graphing. So far I've managed to log everything I want, except the latency and packet loss. Is it possible to somehow extract these two from ping command printout and ...
by zreno
Tue Feb 02, 2010 5:42 pm
Forum: General
Topic: logging to a file
Replies: 2
Views: 457

Re: logging to a file

OK, I've figured I don't need microSD card to be able to log to file. However, I still have a following problem... I'm using following script: :local interface "wlan1"; /interface wireless monitor $interface once do={ :local snr $"signal-to-noise"; :log info "SNR: $snr"; }; Info is configured to use...
by zreno
Tue Feb 02, 2010 4:00 pm
Forum: General
Topic: logging to a file
Replies: 2
Views: 457

logging to a file

Hi,

I'm using RB433ah. Do I need additional microSD card to use logging to file option?

I'm having problems with using the logging to file option - It does create a file when setting logging in Winbox, but doesn't log any data to the file.

Thanks
Zreno
by zreno
Tue Dec 22, 2009 1:43 pm
Forum: RouterBOARD hardware
Topic: RouterOS Bandwidth Test Implementation
Replies: 1
Views: 809

RouterOS Bandwidth Test Implementation

Hi,

how is TCP test implemented in RouterOS? What settings are used (buffer length, window size, max segment size, etc.)?

Does it use standard TCP (Reno?) or one of the TCP extensions used for wireless links?

Best regards
Zreno
by zreno
Thu Dec 10, 2009 6:39 pm
Forum: General
Topic: R52n interference handling
Replies: 0
Views: 1947

R52n interference handling

Hi, I've tested dual channels over 600 m, and results are really disappointing. By dual channels, I mean two R52n cards plugged in RB433AH board at each end of the link, and each card working in SISO mode on separate WLAN channel. First channel is running at 5500 GHz, and the other one at 5700 GHz, ...
by zreno
Thu Dec 10, 2009 5:48 pm
Forum: General
Topic: TCP vs UDP tests - which one to use?
Replies: 0
Views: 458

TCP vs UDP tests - which one to use?

Hi, I'm aware of the difference between TCP and UDP protocols and their application. However, I'm curios about their implementation in RouterOS bandwidth test and relevance for the long link testing. When using RouterOS bandwith test on long links, you can't actually see the maximum potential TCP th...
by zreno
Thu Dec 10, 2009 5:17 pm
Forum: General
Topic: R52n variable performance over frequency
Replies: 1
Views: 471

R52n variable performance over frequency

Hi, I'm running R52ns on RB411AH boards and I've done some outdoor tests which show that throughput drops with frequency. I've been testing at 5500-5700 frequency band at 600m (SISO and 2x2 MIMO) and 2.3 km (SISO). I'm getting following throughputs (UDP, traffic): 600m - SISO * 113 Mbps at 5500 GHz ...
by zreno
Fri Nov 13, 2009 1:39 pm
Forum: Beginner Basics
Topic: manually setting ack-timeout
Replies: 1
Views: 787

manually setting ack-timeout

Hi,

is it possible to manually set the integer value of ack-timeout? Winbox offers only indoors and dynamic. I've tried to set it in console with e.g. set ack-timeout 100, but got syntax error or a similar message.

Thanks
Zreno
by zreno
Fri Nov 06, 2009 5:11 pm
Forum: Beginner Basics
Topic: Same vs different subnets on router/AP interfaces
Replies: 2
Views: 656

Same vs different subnets on router/AP interfaces

Hi, is it possible to use same subnets on router/AP interfaces? I have two RB433AH boards with R52n cards and I'm using them for point to point wireless link. I have two laptops at each end of the link and laptops have to be able to talk to each other. Wlan interfaces obviously have to be on the sam...
by zreno
Thu Sep 17, 2009 1:56 pm
Forum: General
Topic: Various signal strength levels
Replies: 1
Views: 581

Various signal strength levels

Hi, I'm confused with various signal strength levels I'm getting with Winbox wireless interface monitor and WiSpy DBx. I have the following setup on the table: 2 x RB433AH with R52n cards and 14 dBi patch antennas * one RB is configured as AP * other RB is configured as Client (Station) * SISO confi...
by zreno
Mon May 11, 2009 9:00 pm
Forum: General
Topic: custom software modules
Replies: 4
Views: 1684

custom software modules

Hi, is it possible to use custom built software modules in combination with RouterOS on the same board. E.g. I plan to use a RouterBoard with RouterOS in AP/router configuration, and I need to log data like link quality and throughput at the customer end. Then I would need this customer QoS data to ...