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RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs tcp

Posted: Thu Jan 27, 2011 12:52 am
by surfnetc
I just got the new RouterBOARD SXT 5HnD in hand. I have 2 setup on the bench and connected via bridge mode.

I can seem to get more than 40megs of tcp traffic
I get about 100megs of UPD traffic,

Is there something I need to set to get 200megs of real throughput?

Flags: X - disabled, R - running
0 R name="wlan1" mtu=1500 mac-address=00:0C:42:84:62:7F arp=enabled
interface-type=Atheros 11N mode=station ssid="MikroTik" frequency=5765
band=5ghz-onlyn channel-width=20mhz scan-list=default
wireless-protocol=nv2 wds-mode=disabled wds-default-bridge=none
wds-ignore-ssid=no default-authentication=yes default-forwarding=yes
default-ap-tx-limit=0 default-client-tx-limit=0 hide-ssid=no
security-profile=default compression=no
[admin@MikroTik] /interface wireless nstreme> print
0 name="wlan1" enable-nstreme=yes enable-polling=yes disable-csma=yes framer-policy=dynamic-size framer-limit=3200

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Thu Jan 27, 2011 9:24 am
by uldis
you didn't explain how you made those tests - from where to where you were sending traffic, what bandwidth generator you used? Please post wireless registration details.

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Thu Jan 27, 2011 5:42 pm
by surfnetc
Sorry, I was doing a test between 2 SXT5HnD board in bridge mode. I had them separated enough to have good signal but not too much. The test was using the b/w test in the MK.

here is the wireless reg stats
0 interface=wlan1 radio-name="000C4284627F" mac-address=00:0C:42:84:62:7F ap=no wds=no rx-rate="117.0Mbps" tx-rate="117.0Mbps"
packets=82856428,449977 bytes=611389557,501790444 frames=41605395,283510 frame-bytes=1350567321,504004870 hw-frames=42094631,303096
hw-frame-bytes=3783053740,514951609 tx-frames-timed-out=0 uptime=13h25m1s last-activity=150ms signal-strength=-64dBm@HT20-6
signal-to-noise=50dB signal-strength-ch0=-68dBm signal-strength-ch1=-66dBm
strength-at-rates=-58dBm@6Mbps 4s910ms,-58dBm@9Mbps 13h25m,-58dBm@12Mbps 13h24m56s,-59dBm@18Mbps 13h24m52s,-58dBm@24Mbps 13h24m48s,-
60dBm@36Mbps 13h24m47s530ms,-61dBm@48Mbps 13h24m45s990ms,-62dBm@54Mbps 13h24m40s650ms,-59dBm@HT20-4 13h24m34s,-61dBm@HT20-5
10h11m33s850ms,-64dBm@HT20-6 150ms,-66dBm@HT20-7 3s140ms
tx-signal-strength=-62dBm tx-ccq=92% rx-ccq=84% p-throughput=90584 distance=1 nstreme=no framing-mode=none routeros-version="4.14"
last-ip=192.168.251.2 802.1x-port-enabled=yes compression=no wmm-enabled=yes

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Thu Jan 27, 2011 9:57 pm
by InoX
with internal btest is normal 40mbp; you need to have two x86 computers connected to each end.

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Mon Mar 21, 2011 7:40 pm
by chemcat9
Can you give the settings you used to put the two SXTs in bridge with each other? Thanks!

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Sat Mar 26, 2011 7:40 pm
by meno
another thing update your NIC driver to the lastest try to not use the windows buildin driver (if you use windows) I guess for the btest.exe

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Wed Mar 30, 2011 12:53 am
by t3rm
i need to know what is the maximum transfer of tcp data between 2 end-nodes such these topology:


PC ------------Wireless-SXT-Client --------------------WirelessAP--SXT------------PC

From PC to PC,
do SXT able to transfer max 100Mbps real throughput ?

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Wed Apr 20, 2011 11:52 am
by hackac
Same as my measures. I set up a bridge by this howto: http://wiki.mikrotik.com/wiki/Transpare ... using_MPLS
After that switch on the second chain and chose nv2 wireless protocol, 5ghz-a/n.

The devices distance about 100m. With the built in bandwith test tool 100 mbit/sec one direction UDP, 54 mbit/sec both direction UDP. 54 mbit/sec one direction TCP, 25-30 mbit/sec both direction TCP. Tx/Rx CCQ is about 98-100% so the link quality is ok.
The real full duplex UDP is a dream I think. On TCP test the processor usage was 100%.

Advices:
- try different spektrum, in my situation the default spectrum was so dirty
- nv2 protocol can give you some gain
- try nv2 TDMA change to xxx (I use 5 - better throughput and minimal increased latency)
- use short preamble

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Wed Apr 20, 2011 12:16 pm
by roc-noc.com
Same as my measures. I set up a bridge by this howto: http://wiki.mikrotik.com/wiki/Transpare ... using_MPLS
After that switch on the second chain and chose nv2 wireless protocol, 5ghz-a/n.

The devices distance about 100m. With the built in bandwith test tool 100 mbit/sec one direction UDP, 54 mbit/sec both direction UDP. 54 mbit/sec one direction TCP, 25-30 mbit/sec both direction TCP. Tx/Rx CCQ is about 98-100% so the link quality is ok.
The real full duplex UDP is a dream I think. On TCP test the processor usage was 100%.

Advices:
- try different spektrum, in my situation the default spectrum was so dirty
- nv2 protocol can give you some gain
- try nv2 TDMA change to xxx (I use 5 - better throughput and minimal increased latency)
- use short preamble
Don't run the bandwidth test on the SXT or you will not see the maximum throughput that it is capable of. If the CPU on the SXT is busy than you cannot expect it to have enough time for 802.11n protocol.

For a more accurate bandwidth test, you must plug another device into the SXT on each end and run the bandwidth test on those.

Also, why not set the radio mode to 5GHz-only-N? For maximum speed, you don't use 802.11a.

Tom

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Wed Apr 20, 2011 3:59 pm
by hackac
I will test the bandwidth with PC-s and report.
I need 5Ghz frequency because the 2.4 GHz spectrum is really dirty in the heart of the city.

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Wed Apr 20, 2011 4:53 pm
by hackac
Same speed with PC-s at the end (file copy)...

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Sun May 01, 2011 2:10 pm
by prashantguharoy
Got 120 Mbps (Tcp) download & 52 mbps (Tcp) upload on SXT 5hnd.
Configured it using this link http://wiki.mikrotik.com/wiki/Transpare ... using_MPLS
getting this result by keeping the devices 5 meters away from each other.
Will be testing the device on an outdoor link of 7.5 KM next week.
thanks

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Tue May 03, 2011 1:39 am
by enuro12
Interested in your long haul results

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Wed May 04, 2011 2:29 pm
by hackac
I am also interested...

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Wed May 04, 2011 6:05 pm
by InoX
166mbps at 2km; TCP

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Wed May 11, 2011 3:57 am
by enuro12
How did your long distance tests work out?

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Fri May 20, 2011 1:53 am
by elidoni
Got 120 Mbps (Tcp) download & 52 mbps (Tcp) upload on SXT 5hnd.
Configured it using this link http://wiki.mikrotik.com/wiki/Transpare ... using_MPLS
getting this result by keeping the devices 5 meters away from each other.
Will be testing the device on an outdoor link of 7.5 KM next week.
thanks




Have you tested it ? Im interesed to connect it to a distance of max 6 km ..and I wonder if it works !!!!!????

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Fri May 20, 2011 1:55 am
by enuro12
I cant seem to get above 36mb on my link at .5km. Getting support for these products is like pulling teeth...

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Fri May 20, 2011 3:38 pm
by prashantguharoy
At 5.17 KM the link is giving a signal strength of -81/-83 with both the channels enabled
& tx/rx ccq remains 36/12
:( :? literally pulling my hair as to why this is not working at all

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Fri May 20, 2011 3:39 pm
by normis
I cant seem to get above 36mb on my link at .5km. Getting support for these products is like pulling teeth...
have you emailed support? this forum is not a support forum

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Fri May 20, 2011 3:40 pm
by normis
At 5.17 KM the link is giving a signal strength of -81/-83 with both the channels enabled
& tx/rx ccq remains 36/12
:( :? literally pulling my hair as to why this is not working at all
signal is really bad. try to change alignment, make sure both units are correctly polarized and mounted, change frequencies of them, use spectral scan to see if there is a lot of interference or not

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Fri May 20, 2011 3:55 pm
by prashantguharoy
At 5.17 KM the link is giving a signal strength of -81/-83 with both the channels enabled
& tx/rx ccq remains 36/12
:( :? literally pulling my hair as to why this is not working at all
signal is really bad. try to change alignment, make sure both units are correctly polarized and mounted, change frequencies of them, use spectral scan to see if there is a lot of interference or not
this is the settings which we are using

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Fri May 20, 2011 3:59 pm
by normis
please follow my suggestions and see if situation changes

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Sun May 22, 2011 5:11 pm
by sepehrava
I test the SXT device in lab:
my config is this: NV2+VPLS Tunnel :
99Mpbs Download
150 Mbps Download+upload
Test tools : ipref.exe -c "server_ip" -t 100 -P 30

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Sat Dec 10, 2011 9:30 pm
by hackac
A dummy question. Is needed WPA2 for security reason or VPLS is enough on a PtP tunnel?

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Sun Dec 11, 2011 12:31 pm
by uldis
A dummy question. Is needed WPA2 for security reason or VPLS is enough on a PtP tunnel?
if you are using Nv2 then the only option is the nv2-preshared-key:
http://wiki.mikrotik.com/wiki/Manual:Nv ... v2_network

Re: RouterBOARD SXT 5HnD ptp bridge mode only passing 40megs

Posted: Fri May 10, 2013 3:53 pm
by whatda
sepehrava any chance you can post your setting s for both ends