Problem with packet loss on my miktotik ruter :S

RouterOS General
1

Hi, I have had many troubles past month and I tried to contact many people who know with mikrotik and no help.

I hope I will find some help here :S

First of all, my config:

  • I have direct gigabit link that comes from large Telekom Cisco router into my mikrotik wan card.
    My Mikrotik is a desktop pc, Intel qore2quad q6600 cpu, 1 GB RAM, 160 GB hdd, 2x airlive Gigabit ethernet adapters.
    My link goes to wan card, and lan card is connected to TPlink gigabit switch that has 16 100 Mbit ports.

I have 12 dedicated server boxes on that switch and I run game hosting that has many small UDP packets.

Now my problem begins at 130 Mbit upload, it cant process more, so I have loss packets and my game servers lags. :S

CPU in MT works on 45% in peek

Here are some graph pictures from today:

ethernet1:

see how upload can’t go more than 130 Mbit :S

and look how CPU is perfectly cut off :S

What should I do to get more than 130 Mbit upload on my MT ?
I have license Level 4.
On my winbox title bar it says Winbox v3.17 on x86 (x86) - shouldn’t it be x64 for Q6600 :S

I did not set it up, some folkes who were in Poland on MT course did it (Bus Computers, Kikinda, Serbia)

Please help
Is there some limitation or something I can set up, maybe it is CPU, it says 45 % but maybe it is more really :S

Thanks ahead

2

igorkrnic

Can you PM me with your email address? I believe I may be able to help, but likely to be only by connecting to your box to diagnose the problem in realtime.

Ron

3

many small UDP packets? try to increase ‘ethernet-default’ (as on your ether interface) queue type size

4

too late :slight_smile:
I have removed MT, it was the problem
I now use Cisco 3825 with Gbit card so it all works perfect :slight_smile:

5

Igorkrnic,

If you do not understand something regarding MT, it doesn’t mean that it doesn’t work:)

It is useless to use q6600 on mt system. You should use the best core2duo available with pci-e gigabit lan. That will be your solution for many more megs than just 130M upload!

6

Don’t get me wrong, I didn’t think that in general MT is bad, I said MINE MT was bad and to tell you the truth I was pointing on CPU too
Never mind that now, I had this cisco before my MT all the time so I thought to give it to route my lan addresses and now it is all fine :slight_smile:

7

just posting our experience as well here. The MT router 8 cores dual quad 54xx based system and msi-x based quad port card installed – cant handle 130mbps of throughput. tried everything not much help. planning on going cisco for our customers as well. if anybody has any ideas let me know.

8

seriously there should be some best practice post for MT on ethernet-default etc - what should it really be with high end cpus so no lags and no drops ?