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normis
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SXT testing results

Thu Jan 27, 2011 7:32 am

One of our customers sent us this test result. We have similar results, and are happy to see that customers get the same:
RB SXT_cr.jpg
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angboontiong
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Re: SXT testing results

Thu Jan 27, 2011 12:32 pm

Is there any tools can show the actual TCP traffic as the UDP always not so accurate...
Like when this case tested is 100++ Mbps, but if real traffic flow, i dun think it can go for that speed...
 
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normis
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Re: SXT testing results

Thu Jan 27, 2011 12:43 pm

it depends on what you mean by "real traffic". it's different for everyone. that's why we use UDP test so that results are consistent and can be compared.
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honzam
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Re: SXT testing results

Thu Jan 27, 2011 3:16 pm

Please post test in TCP and settings of the wireless
LAN, FTTx, Wireless. ISP operator
 
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normis
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Re: SXT testing results

Thu Jan 27, 2011 3:17 pm

It's not our test, it's from a chinese forum.
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honzam
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Re: SXT testing results

Thu Jan 27, 2011 3:48 pm

I understand. But I would like official test from Mikrotik
LAN, FTTx, Wireless. ISP operator
 
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Re: SXT testing results

Thu Jan 27, 2011 10:50 pm

UDP is always the better looking test for MT to use as it always shows results far higher that what you can actually get in reality
 
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normis
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Re: SXT testing results

Fri Jan 28, 2011 7:28 am

UDP is always the better looking test for MT to use as it always shows results far higher that what you can actually get in reality
not true! it's only reasonable to test the absolute maximum possible. there needs to be some measuring point where all the tests can be compared, you can't run speedtest.net and expect it to be even remotely accurate, or even to try and compare that result to other routers. Not all web traffic is small TCP packets. There are all kinds of requirements and not everyone needs the SXT for online gaming for example.
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Beccara
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Re: SXT testing results

Fri Jan 28, 2011 7:31 am

UDP is always higher and higher is better for MT :P

How can you say UDP is the only one where all the tests can be compared? TCP isn't much different but does strain the routerboard a little more.

In our experience TCP test's are more in-line with what we can push than UDP test, We never see close to UDP speed results in a real ISP enviroment
 
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Re: SXT testing results

Fri Jan 28, 2011 8:50 pm

same here
 
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Re: SXT testing results

Fri Jan 28, 2011 10:21 pm

Good result. How far it was ? Signal levels ? Configuration ? 2chain or 1chain , 20 or 40Mhz width ?

Its would be first time for me to see 2chain stable link. May be we are doing something wrong, but using 1 chain we got always very nice stable links on 20MHz od 40Mbjt channel, but something is always wrong after going to 2chain setup. Its speed is everytimes very unstable.

Our units arived today, so looking forward to see results
 
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Re: SXT testing results

Thu Feb 03, 2011 3:06 pm

Be nice if f SXTs came with a baseline configuration for PtP so we only had to change SSID and Channel. Right now there is so much trial and error involved :(

Obviously all environments are different but there must be a common starting point?
 
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normis
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Re: SXT testing results

Thu Feb 03, 2011 3:12 pm

SXT supports Flashfig out of the box, so you can do one-click configuration out of the box.
http://wiki.mikrotik.com/wiki/Flashfig
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Re: SXT testing results

Sat Feb 05, 2011 10:14 am

Flashfig - new to me - cool

Waiting for my SXT's now - looks very interesting

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Re: SXT testing results

Sat Feb 05, 2011 5:58 pm

SXT supports Flashfig out of the box, so you can do one-click configuration out of the box.
http://wiki.mikrotik.com/wiki/Flashfig
nice, but we are still missing default recommended values.
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Re: SXT testing results

Mon Feb 07, 2011 4:30 am

Here is my test result:

Site A
1. Notebook HP Probook Corei3
2. 4GB Memory
3. Broadcom Ethernet
4. Mikrotik RB/SXT
5. Firmware version 4.16

Site B
1. PC Dual Core
2. Memory 2GB
3. Realtek Ethernet
4. Mikrotik RB/SXT
5. Firmware version 4.16

Software used : JPerf version 2
Protocol : TCP
Distance : Indoor, 5 meters, different room

Image

Image

Image
 
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Re: SXT testing results

Mon Feb 07, 2011 5:19 am

You wanna print the wireless config?
 
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Re: SXT testing results

Mon Feb 07, 2011 11:58 am

great.
can you post your configuration here.
thanks
 
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Re: SXT testing results

Tue Mar 01, 2011 12:46 am

Would love to know a config where we can cheive anything like these speeds, the most i can get through these units at the moment is 30mbps tcp one way or symmetric seems fine,

please someone post a usable config for these units
 
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Re: SXT testing results

Tue Mar 01, 2011 9:39 am

manners, push though them not between them using TCP, as they are not to powerful to generate so many TCP traffic. Try UDP.
Also test out Nv2 protocol.
 
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Re: SXT testing results

Tue Mar 01, 2011 12:09 pm

UDP yes i understand i can see in the region of 90mbps to 170mbps however this really does not happen when used in real life situations, there are many out there that will agree its more tcp throughput we would like to see. i tried it with pc's at each end using mikrotik bandwidth tester for windows but the results were lousy, would be nice to see a config that works and performs
 
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normis
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Re: SXT testing results

Tue Mar 01, 2011 12:11 pm

in real life situations there is no bandwidth test sitting on the SXT killing it's CPU. you can't compare that as well. the test should not be run on the SXT itself.
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Re: SXT testing results

Tue Mar 01, 2011 1:39 pm

....i tried it with pc's at each end using mikrotik bandwidth tester for windows but the results were lousy, would be nice to see a config that works and performs
Anyway Normis, UDP test is not for messuring link capacity. Tcp test run on separated devices can be close to real traffic capacity.
I still have the question: doy yo plan some knid of RB811 or Rb811ah routers?
That would be an awesome for the new N generation.
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normis
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Re: SXT testing results

Tue Mar 01, 2011 1:49 pm

in that case, put many powerful PC devices behind those SXTs and run multiple high speed TCP connections from PC to PC, not from the SXT itself.

I have no comment about future devices. Some you will see at the MUM, so you must come
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Re: SXT testing results

Tue Mar 01, 2011 2:08 pm

Ok, I'll be there.
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normis
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Re: SXT testing results

Tue Mar 01, 2011 2:37 pm

Anyway Normis, UDP test is not for messuring link capacity.
no, exactly opposite. UDP is measuring maximum link capacity
Tcp test run on separated devices can be close to real traffic capacity.
real world customer download speed is not the same as "maximum link capacity". you are talking about two different things. TCP has backoff algorithm (http://en.wikipedia.org/wiki/TCP_conges ... _algorithm) so it looks like it's running slower. Therefore you need many TCP streams to properly test the link.

Also read this http://tools.ietf.org/html/rfc675
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Re: SXT testing results

Tue Mar 01, 2011 3:33 pm

I won't argue.
For me - as a provider - important to know whar traffic can my link handle without packet loss and lag.
And this can be messured by a tpc test. Even I test my lnik with udp and find that hurrah, its 120Mbps,
it probably will lag at 80mps traffic. Why? Because of the prototcol - of course. Since the real traffic is
mostly tcp, I have to make tests on tcp. And since we use rb-s and not pcs (that good old times) we can not messure
link on tcp with routerboards itsefls. Its clear.
Udp test is nice, and can show big numbers, but we do not manage udp networks, but tcp...
As a trainer I usualy presented the difference for my students. One thing is to show the max ,and an other to show the real.
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normis
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Re: SXT testing results

Tue Mar 01, 2011 3:37 pm

What you say is true, except that if you have a large number of TCP connections, you will get close to what you can get with UDP. If you only have one TCP sessions, you will not get close to the UDP result. Normally, if you have many customers, you will get these results.

Also, we use UDP for all our tests to be consistent and to be able to compare performance between devices.
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Re: SXT testing results

Tue Mar 01, 2011 3:54 pm

Just download 5 very popular torrents - it will be pure TCP test with descent amount of connections :). Mind that number of connections have impact on conntrack performance also ;). and best thing is - it represents "real" traffic of my network with 95% precision :)

With proper QoS you can ensure that important connections doesn't suffer from packet drops while still utilizing max-capacity of the link.
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Re: SXT testing results

Wed Mar 02, 2011 12:06 am

Ok have retested the units again today, power turned down to 2dbs as this is in my house with around 5 meters between them, connecting at -55, using jperf i can get 90mbps -98mbps tcp throughput using 20 streams, one way, would love to know how the person above got the same sorta results symmetric, have to admit its very nice to see,

i have them set up as a basic bridge, bridging the ethernet and wireless at each end
using station bridge on station end
NV2
conn tracking is on

both chains are enabled

desktop dual core 2.8ghz, 3gb ram at end A
Laptop dual core 2.1ghz 3gb ram at end B

have to admit i couldnt see the same with mikrotik bandwidth tests

when i do the tests both ways it seems to average around 40mbps one way 30mbps the other

have tried with connection tracking off but doesnt seem to make all that much difference

also is there a way to switch off the led's
 
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normis
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Re: SXT testing results

Wed Mar 02, 2011 7:40 am

the mikrotik bandwidth test exe for windows uses only one TCP stream, so better use torrents like macgaiver suggested. run some 5 parallel downloads which have more than 100 seeds. maybe some ubuntu releases
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Re: SXT testing results

Wed Mar 02, 2011 9:02 pm

Could Really do with a way to switch off the led's as im sure it wont be long before people start to notice them,

any help is greatly appreciated,

as for downloading torrents not so easy at home as the connection i have is only 20mb itself, and also as an isp in the office not possible as this could disrupt other customers, personally i cant find any faults with jperf bit of a pain to get it to work on 64bit os but other than that its worked a treat

Many thanks
 
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Re: SXT testing results

Wed Mar 02, 2011 9:44 pm

Check the 4th page of user's guide.
http://routerboard.com/pricelist/downlo ... ile_id=280
 
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Re: SXT testing results

Tue Apr 24, 2012 6:06 am

楼主的设置好棒
能加你QQ指导我一下设置吗?
 
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Re: SXT testing results

Wed Apr 25, 2012 10:50 pm

what about 150+mb/s tcp? I achieved with SXT in lab environment with NV2

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