Dear Sirs,

In the following system:

RB133 with RouterOS and two R52 (5 GHz)

is it possible to use wireless cards at the same time in order to increase data transfer rate (about 40 Mbps instead of 15-20 Mbps)?


Regards.

AFAIK the limit is the CPU, it's too powerless to handle more throughtput, so if you put 2 cards, you'll get the same speed over 2 of them

AFAIK the limit is the CPU, it's too powerless to handle more throughtput, so if you put 2 cards, you'll get the same speed over 2 of them

I don't know if I have understood...

One R52 = about 20 Mbps

Two R52 (nstreme2 enabled) = about 20 Mbps instead of 40 Mbps?


Is that what you meant?


Regards.

it's not so easy to say... 2 cards = 2X20Mbit. but the result is ubiquitious... simmetric channel with more bandwidth. once you try you can see.

regards,
C. G.

it's not so easy to say... 2 cards = 2X20Mbit. but the result is ubiquitious... simmetric channel with more bandwidth. once you try you can see.

regards,
C. G.

I would want to know if the RB133C is really able to sustain about 40 Mbps
in a point-to-point wireless system like this:

PC
|
RB133C, two R52
/ /
5 GHz (no routing, nstreme2 enabled), transfer data rate = 20 + 20 = 40 Mbps (half or full duplex?)
/ /
RB133C, two R52
|
PC

Is it possible to get that?


Regards.

Nope, RB133C only have one MiniPCI slot. Also you should go for RB532A if you want more than 15-20Mbit UDP on the board.

/Henrik

Nope, RB133C only have one MiniPCI slot. Also you should go for RB532A if you want more than 15-20Mbit UDP on the board.

/Henrik

You're right... I fixed the error.

What can you say to me about RB133 when is used in a scenario like above?

Nope, RB133C only have one MiniPCI slot. Also you should go for RB532A if you want more than 15-20Mbit UDP on the board.

/Henrik

You're right... I fixed the error.

What can you say to me about RB133 when is used in a scenario like above?

i wuld use PC, not routerboard. P43GHz+/256/CF is a good configuration with much better performance regarding any routerboard. our experience shows that big bandwidth links wants PC, PIII minimum.


regards,
C. G.

Well, if you can find me a PC that i can feed over PoE and put 50 meters up in the air then i might consider. There's a reason why we use Routerboards... one of them is that they are quite well performing and they fit in small boxes with passive cooling.

/Henrik

Unfortunately, I can't use the RB532 in my country, because it haven't the CE marking.

The system I'd like to build must be able to sustain at least 24 Mb/s (40 Mb/s would be better).
Perhaps, if I used the frequency of 2.4 GHz (turbo mode), I would solve my problem,
but I'm not sure of it. On the other hand, using the 5 GHz I could transmit more power (30 dBm EIRP).


About custom solutions... I have a computer built with next components:

-- Motherboard PC Partner MVP4BS7-947
Baby AT
Chipset VIA Apollo MVP4,
3 PCI slots (rev. 2.2 compliant)
http://www.pcpartner.com/support/man/via/894700.pdf

-- CPU: IBM 6x86MX PR333
250 MHz internal speed (CPU core) - 83 MHz external speed (BUS)
http://web.singnet.com.sg/~duane/b1000004.htm

-- RAM: 128 MB SDRAM

-- Hard Disk: 1 40 GB EIDE (Ultra DMA 66) 4200 RPM

-- NIC: 1 Hamlet 10/100 Mbps Ethernet card


I would imagine it as a wireless bridge... based on a R52, a mini-PCI to PCI adapter
and - for the connection with a 15dBi grid antenna - 10m of LMR900 coaxial cable
(4.6dB/100ft of loss at 5.2 GHz).

Would such system be compatible with RouterOS?

If the answer would be "yes", what performances should I expect from it?

Moreover, what kind of problems could I have with 10m of coaxial cable?


Regards.

i want to tell you that we have never use that lmr900
we always use lmr400
computer in a big metal case wallmounted so close as possible to antenna with maximum 2-3m lmr400, that's all secrets we have... you have to pass 30 or 40 mbits, depends of quality of link, line of site clearness etc.

Unfortunately, I can't use the RB532 in my country, because it haven't the CE marking.

what actually is problem to use 532. i really do not understood what's the CE marking in your country. culd you explain more recently.

Unfortunately, I can't use the RB532 in my country, because it haven't the CE marking.

what actually is problem to use 532. i really do not understood what's the CE marking in your country. culd you explain more recently.
regards,
C. G.

so, it's ain't easy...
use rb112 with r52. you can put two cards in dual nstreme. perfect... we have try and resieve nice result. but as far as 50km we have never try r52. at these distances we use sr5 and xr5 only. just one of these cards can work in an rb112, therefore you can try with 2xr52 in a rb112 if ce marking made.
so, in one word, try r52 with rb52 in dual nstreme.
reagards,
C. G.

so, it's ain't easy...
use rb112 with r52. you can put two cards in dual nstreme. perfect... we have try and resieve nice result. but as far as 50km we have never try r52. at these distances we use sr5 and xr5 only. just one of these cards can work in an rb112, therefore you can try with 2xr52 in a rb112 if ce marking made.
so, in one word, try r52 with rb52 in dual nstreme.
reagards,
C. G.

so, it's ain't easy...
use rb112 with r52. you can put two cards in dual nstreme. perfect... we have try and resieve nice result. but as far as 50km we have never try r52. at these distances we use sr5 and xr5 only. just one of these cards can work in an rb112, therefore you can try with 2xr52 in a rb112 if ce marking made.
so, in one word, try r52 with rb52 in dual nstreme.
reagards,
C. G.

Yeah 2Mbit Full Duplex sounds nice, but this guy needs +20..

/Henrik

so, it's ain't easy...
use rb112 with r52. you can put two cards in dual nstreme. perfect... we have try and resieve nice result. but as far as 50km we have never try r52. at these distances we use sr5 and xr5 only. just one of these cards can work in an rb112, therefore you can try with 2xr52 in a rb112 if ce marking made.
so, in one word, try r52 with rb52 in dual nstreme.
reagards,
C. G.

Yeah 2Mbit Full Duplex sounds nice, but this guy needs +20..

/Henrik

Only 2 Mbps...?

yeah,
but for us 20Mbps is not a successful story at least.
30-40Megabits link is normal...
everything else shuld be made more professionaly
regards,
C. G.

hello,
I supposed this 30-40 Mbps is half duplex, am i right? (tcp or udp?)

I tested the above config in table, but im getting asymmetric 4-5/27-30 Mbit tcp traffic, i cant figure out why could be this happened.

i have a plan, as i build a pair of wireless bridges from 2.5 GHz P4 PC's, with 2-2 R52 cards using them in dual nstreme, 5GHz turbo mode, exact framing. What is yours opinion, what throughput I can squeeze out from this link? I would like to reach 45 Mbps full duplex tcp traffic...


thank you in advance
Adam