Was anyone able to open the attachments on the earlier post? 
yes, but only on: May 11 
Same. Normis can you check whatâs happen with attachment?
Normis is on vacation.
I guess the problem is with exe post on 11.05.2010.
It seems the attachment was deleted (it is not possible to find on server), so we should ask exe to upload it one more time.
Here it is again:
but this is utp trafficâŚ
can you send a picture of tcp troughput??
tnx
bye
YesâŚ
Here is the real traffic, downloading from rapidshare:
i just donât understand how you do this..i have the exact same config as you describe and i have tryâd with alot other antenas and change my rb433ah with c2d PCâs and still nothing..
can you post your config again??
tnx
bye
with 433ah you cannot achieve this..
You should not use x86 PC because there is hardware incompatibility with some motherboards .. You should use mbs which is proven to work good with mikrotik and upgrade your bios to the latest version.
Use RB800 on both parts of the link and you should not have any problem.
Configuration is exactly like in this thread.
I am testing two RB411 now in bridge and canât get 200 Mbit UDP which I achieved about year ago with bridge with RB600A and RB433AH maybe at that time routeros 4.2.
Current setting and condition:
- indoor test
- Two RB411 with R52N, routeros 4.9
- bridge, WDS, 5 GHz-n, hw. retries 3
- signal is good, CCQ is good and stable over 90%
- link speed is i 270 Mbit HT and estimated P throughput is 150 Mbit
- 300 MHz CPU is not overloaded, usage about 30 % caused partly by test itself
- routeros UDP test goes up to 47 Mbit, speedtest.net mini measured 37 Mbit TCP
Why max. real UDP throughput is only 50 Mbit then it should be 200 Mbit?
Is this some limit of RB411 even CPU is not loaded too much?
Weird thing is that link speed canât get to 300 Mbit HT, only 270 HT even with good signal.
5GHz a mode real UDP throughput is 29 Mbit with good CCQ and 54/54 Mbit link speed, real TCP test using speedtest.net mini measure about 23 Mbit TCP
There should be some magic setting somewhere.
I have to buy another RB600A or other more powerfull board to repeat earlier tests and compare results.
Here is the configuration of maximum stability of Align,
I have same issue with 270HT mbps. My link also never connect at 300HT/300HT. All time is connected on 270HT/270HT. Can anyone tell me whatâs wrong in my config?
Very Thanks.
Something is not OK.. My own experience is that 65mbit HW makes 60mbit thruput, 121mbit HW makes 95mbit thruput, as count as counting 270mbit has to make at least 210mbit thruput in layer2.. There is inter chain problem.. I will work this out next month
Hi !
it seems that 4.9 runs on PTP now without âexeâs special nstreme optimizationsâ for data rates. i have configured 2 PTP links, one with RB433AH and one with RB800, R52n at 5GHz, 20MHz and 40MHz. Both links are stable and best throughput. ATTENTION: it seems that 4.9 also handles the data rate setting other than the versions before ?!? i didât get a link on the manually configured WLANs after updating to 4.9âŚ!!! with standard speed settings it worked fine âŚ
So the mayor reqirements are from my view today:
- free channel
- nstreme and WDS as explained on many last posts (everytheng else doesnât perform well)
- set hw-retries at 15 (it helps to get betst stability for PTP)
- additionally i use adaptive noise immunity
nothing else âŚ
if i put traffic on the link, the wlan speed optimizes itselve now from A-rates to maximum HT rates quickly. Ihe link is very stable, no disconnects. Throughput is best. because of CPU power RB800 performs better and you can see the possible tcp speed with bandwith-test on the same devices. On RB433AH the packet forwarding is fine but donât test with tcp-bandwidth test on same devices⌠!!! cpu goes to 100% and you will get bad results. but the link itselve can perform good also an 433AH! (i had real traffic with app. 90MBit without problems)
with this configuration you can get very fast throughput you have ever seen at 1-4ms delay. no problem for voip & coâŚ
so it is now much easier to get good results without optimizing. only nstreme and WDS is absolutly necessary !!
rgds
dieterk
I also tested 802.11n this mooning.
On production link simple replace UB5 on both side with R5nH and pigtail cable use some setting like before nstreme enabled, WDS static other side station WDS, adaptive noise immunity ap and client mode all like before on 5Ghz turbo link. Both side 4.9
Mode 5Ghz-a/n and change one new thing HT extension channel above control.
Noting special to configure.
And here is results.
Compare to 5GHz turbo link much better speed simple replace only minipci card. Before TCP test one side usually 60-65Mbps now is 80-95Mbps.
I like 802.11n 
is work good with only one chain (antena).
I will try to replace some others link and try 2,4Ghz-n.
hi does anybody know what the distance between 2 grids must be to use 2 chains 0n each side
thanks
Has anybody had good results with PTMP 11.N.
pleas epost configs and any info
A âgoodâ distance ( rule of thumb) is 30 cm for 5G scientific calulation may show different but 30 cm woorsk fine
THat is for different channels not mimo
I have tried everything from one card with only one chain to bonding 2 eoip tunnels and i cannot achieve anywhere close to the speeds that you guys are seeing. I have tried the forum configs that everyone has been using. I have even tried using MPLS/VPLS tunnels and i am at wits end. I am using 2 rackmount networking appliances (x86) they have 3.66 Ghz processors so that should be plenty of power i think. I will say that i have tried both the ubiquiti SR 71-15 and the Compex WLM200N5-26 cards and also the R52Nâs. I do believe that there is a problem with the btest in mikrotik when using it on a pc because the test results between the boxes was horrible but if i put my laptop on one and a RB1100 on the other end the wireless link will give me 80Mbps receive to my laptop before the RB1100 CPU is maxed out 100%, but my laptop single core 1.6Ghz intel would only send about 40Mbps before my CPU was maxed out. So I decided to try file transfers between two laptops accross the ptp link and then i saw something even more oddâŚgranted my test laptops only have 100Mb NICâs but i figured if i max them out then i would try something with gigabit NICâs, but when transferring files simultaneously being that these are 100Mb full duplex NICâs in the PCâs i should see about 90Mbps both ways or so i would think. The traffic would stick at 50-54Mbps(bi-directionally) nothing shows a lot of CPU usage (laptops or network appliances) and both laptops would show 90% utilization of their NIC. I have found that Dual Nstreme is a flop and i have not had any good results with nstreme turned on period. WDS doesnt seem to perform as well as VPLS or EOIP tunnels. Just looking for some insight and guidance to make this work like it is supposed to. Also, all tests have been performed on RouterOS 4.9. Thank you in advance for any help or advice that you can give.
culd you more recently introduce situation - antennas, distance and what system you use (routerboard, pc)âŚ