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Only getting 100 Mbps per user from a 200 Mbps link

Posted: Mon Aug 10, 2015 3:29 pm
by ediaz
Hi,

My provider has increased our bandwidth to 200/20, which is great! I've upgraded our router to a RB2011UiAS, and connected everything using the gigabit ports.

To my surprise, when trying to launch speedtests from the internal PCs to the Internet, a single PC can only use up to 100 Mbps of the available bandwidth. With just two users I can saturate our uplink, but one user never passes 100 Mbps. I've checked twice that everything is connected using 1Gbps ports, but can't manage to make just one PC to get more than 100 Mbps downloads (which is great, but only half as great as 200 Mbps).

Anyone can tell me if there is any problem with this setup? I'd appreciate if someone can share a clue or a pointer to further investigate this problem.

Regards

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Mon Aug 10, 2015 5:09 pm
by kristaps
Are you using latest version? 6.30.3 ?

Do you have FastTrack enabled ?

http://forum.mikrotik.com/viewtopic.php?f=21&t=96302
if not reste to default with 6.30+ version and it will be in default config

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Mon Aug 10, 2015 11:26 pm
by BartoszP
6.30.3 ?

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Mon Aug 10, 2015 11:34 pm
by vortex
Does the client have a gigabit port?

Did you look at the auto negotiation status on the interface page?

You should not need fasttrack to reach 200Mbps.

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Tue Aug 11, 2015 2:14 am
by bkuhn
Can the RB2011 handle 200Mbps with NAT, Firewall, etc? I don't think you will get that much speed out of a 2011.

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Tue Aug 11, 2015 8:17 am
by rwrocket
RB2011 non fastpath with firewall and NAT will only net about 130mbps I believe from my testing

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Tue Aug 11, 2015 9:28 am
by vortex
I was reaching about 210Mbps with NAT, firewall, but without fasttrack.

Note that his problem is with a single connection.

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Tue Aug 11, 2015 10:43 am
by ediaz
Thanks very much for the suggestions. I double checked the port status, autonegotiation and all that stuff and they are OK. 1Gbps full duplex, no errors... everything looks fine.

I've just added fasttrack to the config. Once I get it tested I'll come back with the answer.

Only getting 100 Mbps per user from a 200 Mbps link

Posted: Tue Aug 11, 2015 11:15 am
by dadoremix
Look for cpu, how high is it?
If is on 100%, thats it

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Tue Aug 11, 2015 11:35 am
by ediaz
OK. Tests done. I still get 100 Mbps from a single PC (note that it is a single PC, not a single connection). The PC is connected directly to a 1Gbps port in the RB2011, to avoid noise from switches and stuff.

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Tue Aug 11, 2015 12:13 pm
by vortex
Is there a bandwidth limit configured?

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Tue Aug 11, 2015 2:35 pm
by ediaz
Nope. Double checked it. :)

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Tue Aug 11, 2015 4:45 pm
by mrz
At first you must determine where exactly is the limitation.
1. Run bw test from PC to the router.
2. Run bw (or any other test) from the router to gateway

Re: Only getting 100 Mbps per user from a 200 Mbps link

Posted: Tue Aug 11, 2015 7:24 pm
by vortex
Is this a VPN server limit?