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astute
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RB750 slow WAN speeds

Mon May 16, 2011 9:17 pm

Last friday I installed a RB750 at our small office environment but its underperforming badly.
We have a 20/20Mbit Fiber connection but after setting up the router we were able to do only 20/6 at best and averaging around 18/2.

Is this normal for the RB750? And what model should give me better results?
At home I am running the RB450, which allows me to upload my maximum upload speed (7mbit).

Would a RB450 be sufficient or would it be better to get a RB/1100/1200? Or are those slow on WAN as well?
Also, we are planning on upgrading our fiber to 100/100 mbit, would the 1100/1200 manage that?

Besides that, great router, only doing 2% on the CPU on average and memory stays under 10/15 mb usage. Very nice resource management.
 
jadu
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Re: RB750 slow WAN speeds

Tue May 17, 2011 8:55 am

Maybe you only have 6Mb Upload instead of 20. :)
The RB750 it's enought for this 20/20Mbit connection. I have a RB750G with 100/100Mbit and it's using the full bandwidth. The RB750 can handle this as well. It depends on how many Firewall, Queue, etc rules you have.
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astute
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Re: RB750 slow WAN speeds

Tue May 17, 2011 11:57 am

Maybe you only have 6Mb Upload instead of 20. :)
The RB750 it's enought for this 20/20Mbit connection. I have a RB750G with 100/100Mbit and it's using the full bandwidth. The RB750 can handle this as well. It depends on how many Firewall, Queue, etc rules you have.
Connection is fine, done 20/20 speedtest on it without a laptop no problem. There are furthermore hardly any rules in it, just some port forwarding and thats it.
No idea why it is so slow :(
 
aerounit
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Re: RB750 slow WAN speeds

Wed May 18, 2011 6:11 am

hi!

And i have this problem.

My uplink is 3 mbit/sec. I purchase RB/750G, create pppoe-client int and add srcnat from my gray net (192.168.88.0/24) to internet-interface.
RB is connecting, all good, except http-traffic - very, very, very sloooow and someting not response for timeout. Not but payload - 60mbit/sec in/out in ISP-network.

Why? Where need more configure in an devil box?
 
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macgaiver
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Re: RB750 slow WAN speeds

Wed May 18, 2011 8:36 am

I personally do not trust speedtest, if you like to see actual throughput - make actual throughput. Run a torrent client and download several popular torrents, so that there are good number of peers. You will get proper load on device as there will be many connection entries in conntrack, as there are many remote sources/destinations your bottleneck will be your uplink or your router.

Problem with http traffic - it looks like DNS or change-mss problem.
With great knowledge comes great responsibility, because of ability to recognize id... incompetent people much faster.
 
aerounit
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Re: RB750 slow WAN speeds

Wed May 18, 2011 6:35 pm

Sorry people. My trouble is trivial.

I add chain accept for output without any params, then add chain forward from my gray net and forward to may gray net.

Now all good. All http traffic is flying.

P.S. My last question for this topic: bytes on my screen in chains - is bytes of headers without payload?
You do not have the required permissions to view the files attached to this post.
 
mmmigoro
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Re: RB750 slow WAN speeds

Thu Jun 02, 2011 2:12 am

Same problem here. A 45/45mbps fiber connection capped with simple queue at 24mbps.
On laptop tests are running fine (45/45), on RB750 download is at 24mbps but upload is at 9-10mbps.

I will try with dummy rules in firewall, and after that i will let you know the results.
 
edon
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Re: RB750 slow WAN speeds

Tue Aug 09, 2011 11:02 am

I have the same problem but MIKROTIK.
I have fiber optic 50/50Mbps and when I plug in my laptop without the mikrotik router (it's 50/50) but when I connect the mikrotik it's 50/6Mbps.
is there anyone else that has his problem.
Negotiation problem maybe.. (it shows as duplex full though)
 
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sergejs
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Re: RB750 slow WAN speeds

Tue Aug 09, 2011 11:30 am

edon
What is your router configuration? Do you use any /queue /firewall rules?
It would be great to see support output file and more information about your bandwidth test.
 
edon
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Re: RB750 slow WAN speeds

Tue Aug 09, 2011 11:38 am

I have no rule at all .. I tried blank just with nat and also with real ips but it didn't work.
I have no queues aswell. when I try to do mikrotik based upload speed overseas in europe ( from usa to europe) when i do send only it works also receieve only it works (up to 30Mbps) but when I do both it doesn't work

just masquerade nat ***
 
edon
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Re: RB750 slow WAN speeds

Wed Aug 10, 2011 10:41 am

any idea?
 
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macgaiver
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Re: RB750 slow WAN speeds

Wed Aug 10, 2011 11:18 am

How did you measure it? speedtest again? try to run torrents.
With great knowledge comes great responsibility, because of ability to recognize id... incompetent people much faster.
 
edon
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Re: RB750 slow WAN speeds

Wed Aug 10, 2011 8:03 pm

How did you measure it? speedtest again? try to run torrents.

I try to upload a file from my server to another server ( which I know has a good download speed) and it wouldn't work.. it wouldn't go more than 300KB/s
 
frankie
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Re: RB750 slow WAN speeds

Thu Aug 18, 2011 10:57 pm

If using PPPoE or L2TP try adjust TCP MSS in PPP profile (check in Firewall Mangle). I was able to SRC-NAT w/Masquarade 45Mbit FDX with RB750G (Bandwidth test were run on x86 with 100 conn/1500 byte packets). RB750 can easily NAT 20/20 FDX.
 
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sergejs
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Re: RB750 slow WAN speeds

Fri Aug 19, 2011 10:48 am

I recommend you to contact MikroTik support (support@mikrotik.com), attach support output file and screenshots from your throughput tests.

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