Hi,

I need to get 50 Mbit throughput on a 49km PTP link.



Which equipment suggest for each point ?

I think that a rb800 (with nstreme or nv2), and 34db rocket dish antenna , with ....

- sr71-15 ?
- r52hn ?
- other suggests?

No se si habras montado las graficas reales de la antena rocket dish porque miro que el freznel esta muy abierto, yo monte un enlace punto a punto a 45 km y he logrado pasar 20mbps full duplex a 20mhz, supongo que a 40mhz se podria lograr algo mejor, pero no me aventuro hacerlo porque la zona donde estoy esta muy congestionada de interferencia y esta a mas de 4 horas de mi locacion actual y si me encuentro con interferencia a los 40mhz mas bien puede ocasionarme que se me caiga el enlace.
El hardware que yo utilize es tarjeta madre rb411ah en ambos lados, tarjeta de rf sr71-15 en ambos lados y como no tenia antenas de doble polaridad utilize dos antenas de 34dbi marca Radiowave por cada lado, la ganancia que obtuve a esa distancia fue de 64db y el data rate se mantiene en 104mbps en ambos lados, la version de mis tarjetas es la 4.17 y no he probado con la version 5 en este punto por la lejania, aunque a 20km con este mismo hardware y version 5.9 he logrado pasar hasta 90mbps, y te hablo de conectar una maquina a un lado y al otro y hacer pruebas.
Slaudos.

No se si habras montado las graficas reales de la antena rocket dish porque miro que el freznel esta muy abierto, yo monte un enlace punto a punto a 45 km y he logrado pasar 20mbps full duplex a 20mhz, supongo que a 40mhz se podria lograr algo mejor, pero no me aventuro hacerlo porque la zona donde estoy esta muy congestionada de interferencia y esta a mas de 4 horas de mi locacion actual y si me encuentro con interferencia a los 40mhz mas bien puede ocasionarme que se me caiga el enlace.
El hardware que yo utilize es tarjeta madre rb411ah en ambos lados, tarjeta de rf sr71-15 en ambos lados y como no tenia antenas de doble polaridad utilize dos antenas de 34dbi marca Radiowave por cada lado, la ganancia que obtuve a esa distancia fue de 64db y el data rate se mantiene en 104mbps en ambos lados, la version de mis tarjetas es la 4.17 y no he probado con la version 5 en este punto por la lejania, aunque a 20km con este mismo hardware y version 5.9 he logrado pasar hasta 90mbps, y te hablo de conectar una maquina a un lado y al otro y hacer pruebas.
Slaudos.

gracias por contestar mgutz2,

la prueba la voy a hacer en estos dias,
utilizare Dish34 de Ubiquiti, y voy aprobar con todo lo siguiente

- Rocket M5 en cada lado (airmax si, ack=no)
- Rb433ah + sr71-15 en cada lado (nv2 y nstream)
- Rb433ah + r52hn en cada lado (nv2 y nstream)

en ese orden....

probablemente intente hacer en 10mhz, luego en 20 y si
todo va bien en 40mhz

Hi,

I need to get 50 Mbit throughput on a 49km PTP link.



Which equipment suggest for each point ?

I think that a rb800 (with nstreme or nv2), and 34db rocket dish antenna , with ....

- sr71-15 ?
- r52hn ?
- other suggests?

i would suggest you the dbii F50-Pro.
it's great.

That link is not gonna work.
It will carry max 5mbit, whatever you do.
Even with big antennas.

That link is not gonna work.
It will carry max 5mbit, whatever you do.
Even with big antennas.

why ???

You will face a lot of disconnections due Fresnel obstructions.
The link might go up for a while with good signals too but when you will try to pass some traffic, the CCQ will sink until disconnections.
Maybe lowering data rates and channel widht to bare minimum, the link might be more stable than i described, but it will not carry 50mbit traffic as you are trying to achieve.
The options are 2:
Raise one or both points until the Worst Fresnel is higher than 2
Add an hop in the middle to lower the distance and increase the Fresnel Coefficient.

What i said it's not only theory, but real experience.
And my experience says: Don't try to break the Laws of Physics

Dude dont trust this guy. I have a 44km link, running 34db ubnt dishes + rocketm5 with 25db txpower.
I got a good signal -57, my worst fresnel zone was worst then yours, u got a very clean fresnel.
I can easily have 50mb troughput,btw Im running 20mhz channel. I dont know if u gonna get the 50mb u want,
but anyway at least 30mb it will work. If u dont have any noise on the enviorment, than go for it.
And if you really need this ptp, go for professional solution like radwin or motorola. On this same link I tryed
running rb433ah+WLM200N5-26dBm-ESD(compex), best signal was -65, and best troughput 2mb. Anyway
at that time nv2 sucked really bad, now it looks alot more stable.No time for tests now.Good luck!

Dude dont trust this guy. I have a 44km link, running 34db ubnt dishes + rocketm5 with 25db txpower.
I got a good signal -57, my worst fresnel zone was worst then yours, u got a very clean fresnel.
I can easily have 50mb troughput,btw Im running 20mhz channel. I dont know if u gonna get the 50mb u want,
but anyway at least 30mb it will work. If u dont have any noise on the enviorment, than go for it.
And if you really need this ptp, go for professional solution like radwin or motorola. On this same link I tryed
running rb433ah+WLM200N5-26dBm-ESD(compex), best signal was -65, and best troughput 2mb. Anyway
at that time nv2 sucked really bad, now it looks alot more stable.No time for tests now.Good luck!

thank you chadii...!

I will test this PTP link with DISHes 34db (ubiquiti) with next options:
- rockets M5 (27db)
- rb433ah + SR71_15
- rb433ah + r52hn

thanks

I would suggest 433ah + XR5.

There are 2 links here 104km & 80km that with r52hn work very bad, but with xr5 work excellent.

I would suggest 433ah + XR5.

There are 2 links here 104km & 80km that with r52hn work very bad, but with xr5 work excellent.

thank you Tsatasos,
I will try XR5 too.

Feedback your results please

Feedback your results please

yes, of course

From the picture vertical polarity is used, with 50Km link and higher ground between both points i would suggest using horizontal polarity but once again assuming no fresnel issue with this?

I would suggest 433ah + XR5.

There are 2 links here 104km & 80km that with r52hn work very bad, but with xr5 work excellent.

Would appreciate it if contributors to this thread could look at http://forum.mikrotik.com/viewtopic.php?f=7&t=52622 and give an opinion. Plan looks solid enough, but never been that far before!

a mac86, como te fue con el enlace de 50kms, me interesa saber ya que estoy buscando la mejor opcion para obtener 60 mbps full a 30 kms

Hello everybody.
I even used Mikrotik. Now I need to use an Ubiquiti Dish with Mk. Do I have to use an adapter or is it better to install a aprticoular kind of radio card? Thanks.

How did this go?

Hi Guys.

Finnaly this link WORKED !

I get -68 db signal (on each side). Nstreme with 40Mhz Channel
I've used XR5 + RB433ah + Hyperlink 33db single polarization
(vertical polarization)

I've tested NV2 but seems not stable yet :-S

I've a REAL 53.9 Mbits throughput. (tested with btest)
With nv2 I get 60 Mbit but unstable yet. (also with btest)

Next I will play with NV2 parameters in order to get NV2 stable link

NV2 RESULTS
tdma-period-size 3ms, cell radius 40km = get 55mbits and 17ms ping (with full loaded link)
4ms, 50km = 58mbits 14ms
6ms, 50km = 58mbits 14ms

NSTREME VERY STABLE
best fit, framer limit = 4000 --- 53.9 mbit , 16ms


I will post more info soon!

here are some pictures

40mhz Turbo?
What version of Mikrotik you got on the boxes, I haven't updated to the latest 5.6, but I haven't seen that in a channel width before.

Anyone?

Could just be my inexperience with the XR5 cards, I use R52hn across the board, The occaisional R2n for indoor stuff.

40mhz Turbo?
What version of Mikrotik you got on the boxes, I haven't updated to the latest 5.6, but I haven't seen that in a channel width before.
....

you have 40mhz turbo on RoS too many years before from 5.6 version.

Good post.

Good post.

Gracias jorgito, un abrazo.
(tengo mas info ... pero tengo que ponerme a subir las imagenes)

Cool, subelas ...!!!! -- Upload those images... very helpfull for everybody ... Thanks

Can you post TCP both directions throughput?
And Latency at 5mbit Full duplex traffic?
Thanks

Can you post TCP both directions throughput?
And Latency at 5mbit Full duplex traffic?
Thanks

not yet, because if I do TCP test (from RB to RB), this cause RB reach 100%
cpu load doing test, and slow down traffic for that reason

I will do TCP test with IPERF client and server.

If I do Both directions test, I get about 33Mb / 33 Mb

WAW...Great JOBS !!!! Congrats...

WAW...Great JOBS !!!! Congrats...

thank you Keasy!!!