Bandwidth capacity of Mikrotik RB112/153

mipland · Tue Oct 31, 2006 2:51 pm

Hy,
I'm testing this couple of motherboard from Mikrotik:
- RB112 with R52
- RB153 with SR5

and, after read many post in this forum, I decide to made a new one for the following (presumed) problem:

I place that board at 10cm one from the other (without antenna, but CCQ give me 80/100 ca, and connection of about 54/36Mbps), and I saw this:

- 5GHz band, NO turbo, NO nstreme: 17Mbps ca of udp/receive bandwidth;
- 5GHz band, turbo, nstreme: 20Mbps ca of udp/receive bandwidth.

I was expecting a lot of bandwith with turbo and nstreme...which is my error?
Are the cpu of the RB112/153 too limited to provide >20Mbps?

Thanks

73 de IZ3HAD

janisk · Tue Oct 31, 2006 2:54 pm

as in previos post - CPU POWER

jo2jo · Tue Oct 31, 2006 7:31 pm

the BW you get will also depend upon the type of traffic you are sending...more PPS the harder it is on the CPU...maybe you should look at RB 532 which you can run at 330mhz..

my experience is at an office we have a 532 connected to a t3 and we often see 30-35mbit of bandwidth tests and the employees messing around..but at this rate we are seeing 90-100% cpu usage. Granted we are doing some FW and nating rules, but no queues. all wired btw.

crap for 180$ we are IMPRESSED as usual!

I know the MT guys were pusing 70-80mbit through these things by elminating some of the packet processing.

datawlan · Tue Oct 31, 2006 9:52 pm

Dear MIPland!

As You may know, the CPU power of the RB112 is much lower. Your 20Mbit/s 's gonna be much lower, when "active data" is present.

IT's not gonna be higher than app. 3-3,5Mbit

mipland · Tue Oct 31, 2006 9:58 pm

IT's not gonna be higher than app. 3-3,5Mbit

We are trying to make a "national OM backbone" here in Italy. We need a lot of bandwidth from one link to another (the repeater will be one RB112 with two SR5, one in "station wds" mode and one in "ap bridge" mode, 60km one repeater from the other, and another RB112 with a SR2 for the hotspot). Which motherboard do you suggest me to make a good backbone (large bandwidth, but with only two radio miniPCI per repeater, NO dual nstreme)?

Thanks

73 de IZ3HAD

datawlan · Tue Oct 31, 2006 10:07 pm

mipland!

In Your case I would think in a PC instead of the RB112 or RB532.

The RB series are an excellent and almost perfect boards for supporting not more than 20 end-users, but is You need a high bandwith, You may use a P4 PC with at least 2Ghz and 512Mb of RAM.

If anybody does not agree, I accept, but for higher needs You need more-and-more power.

mipland · Tue Oct 31, 2006 11:38 pm

Ok, but our backbone will not have user, it is only a backbone, only PtP link.
I think we'll buy a P4 2.0GHz, 512MB RAM for every repeater, with 3 PCI-miniPCI adapter and 2x SR5 and 1xSR2. I think that the power offered by those P4 will achieve the max bandwidth from those 3 miniPCI...right?

Thanks

73 de IZ3HAD

kalviz · Wed Nov 01, 2006 4:31 pm

If you want to know how to get big Mbps with outdoor MT router, just summon a guy named Stephen Patrick, he really does know HOW to tweak motherboards for MT outdoor wireless

However, most likely he will sooner or later appear in this thread

mipland · Wed Nov 01, 2006 7:24 pm

Thanks.
So, I'll wait for this guy (Stephen Patrick).

73 de IZ3HAD

stephenpatrick · Sat Nov 04, 2006 1:27 am

Well, I never got **asked to appear** before ...
But thank you anyway -
High speed MT-based outdoor-grade waterproof x86 router platforms are something we spent a lot of time perfecting - now well-established solutions with 1GHz AMD 'NX' CPU a preferred option.
Best to contact me off-forum, as this is MT's support forum.
stephen.patrick@cablefree.co.uk

Would be happy to assist-

Regards

CableFree Solutions

wildbill442 · Sat Nov 04, 2006 9:44 am

I've achieved 20-22mbps UDP w/ SR5's NO turbo, NO nstreme, just straight WDS bridging, @ ~6miles.. AP: 16dBi RadioWaves 90degree sector SR5 (RB532), CPE: 26dBi grid with SR5 (RB532).

Hellbound · Mon Dec 25, 2006 12:55 pm

We are trying to make a "national OM backbone" here in Italy. We need a lot of bandwidth from one link to another (the repeater will be one RB112 with two SR5, one in "station wds" mode and one in "ap bridge" mode, 60km one repeater from the other, and another RB112 with a SR2 for the hotspot). Which motherboard do you suggest me to make a good backbone (large bandwidth, but with only two radio miniPCI per repeater, NO dual nstreme)?

Thanks

73 de IZ3HAD

why do you want such poor CPU for important link?
use Intel CPU with at least 2.4 or 2.8 Ghz with 256
or even 512 memory.

if you enable encryption with those routerboard
you will get much less than that. but our intel celeron
2.8 Ghz cpu won't even reach 3% of usage at 30mb receive only

one more thing. NEVER USE AMD... its not stable at all.

hope it helps.