Hello.
I have tested some RB2011 with latest ROS and latest firmware.
It does NAT from one eth (wan eth1) and one eth (lan eth6.
Just plain NAT 1-1 for some about 50 hosts and it is fed via a 100Mbit FD Fiber uplink (eth1)
no VLAN, about 10 firewall rules and nothing else.
no QoS, no queue, just NAT 1-1 .
The performances are a shame.
Even if I use wan eth2 and lan eth2 the CPU usage is very very high.
A download at 100mbit maxes out the cpu.
If i put a RB750GL in an IDENTICAL configuration, the CPU stays about 22%.
I have used both RB2011-RM-UAS and the RB2011i-RM-UAS with no differences. I have replaced RB2011 with RB750GL becuase for NAT, 64mb is not a issue for me and the CPU is a LOT better.
Have you used the profile tool to finde out what eating up the cpu time? I usually get around 300Mbit/s through a RB2011 when NAT/Connection Tracking/Firewall is enabled. If all that stuff is off and fastpass is possible it can route deal with full 1Gbit/s
@Maggiore81
I don’t know what is wrong, but something is definitely not working correct. The RB2011 CPU should be at least 150% the speed of the RB750GL. I also use multiple RB2011’s and they can all do 200Mbit with NAT and routing/firewall, etc. At that point they do reach a pretty high CPU usage, but that’s ok.
Is your performance actually being limited by the CPU usage? If you use iperf from 2 hosts going through the RB2011, what performance do you achieve?
Can you try resetting the configuration to empty and rebuilding everything?
Ok, If you use iperf from 2 hosts going through the RB2011, what performance do you achieve?
Can you try at various steps through building your configuration? Something must be causing this, as said the RB2011 IS at least 1.5x as fast as a RB750GL and in anything I use it with, it performs very well. Up to 200Mbit of internet routing, firewall, DHCP, DNS, NAT, etc. should work no problem, it will max your CPU to 100% so that is about the max with those features enabled.
Please provide bandwidth measurements and results of your tests. What performance with how much CPU usage, doing what, printout of config, etc.
Funny, isn’t it? Dumb lcd throws down the router’s performance. Mabe shared irq or something like that. Report it to support and hope they will fix it.
Have the similar problem with rb2011 - 1Gbps copper connection from ISP, up to 25 simple firewall rules, NAT masquerade and as result only 280-300 Mbps NAT throughput from WAN to LAN with 100% CPU load. Turning off/on LED as metioned above dose nothing.
Any suggestions how to fix it? I was told that the only possible way is to sell rb2011 and buy ubiquiti edge 3 router?
What exactly is the problem? 280-300 Mbps NAT on an RB2011 is quite good and about the max you should expect from such a device.
If you need more performance, buy a faster device from MikroTik. They have one to fit almost any situation! If you need 1Gbps NAT I would recommend getting a small CCR or maybe the 1100AHx2.
You could go to a UBNT Edge router, but it has it’s own limitations and problems. So do the research before you do, because it uses hardware acceleration if you use anything outside of it, it’s performance will become worse then the RB2011.
What exactly is the problem? 280-300 Mbps NAT on an RB2011 is quite good and about the max you should expect from such a device.
The problem is that I thought that I bought a 1 Gbps routing device but received a 0,3 Gbps crap.
Yes I know that the throughput of the most network devices is lower than advertised. But 3 times lower than advertised is too much. This is unfair and should be noted at the product page.
If you need more performance, buy a faster device from MikroTik. They have one to fit almost any situation! If you need 1Gbps NAT I would recommend getting a small CCR or maybe the 1100AHx2.
Why should I buy a $300-$400 Mikrotik device if on the market exist devices capable of 1Gbps NAT throughput priced below $100?
Also I should say that for $400 I can build a system unit (or buy a used one) install there FreeBSD/OpenBSD or use Pfsense or Untangled or similar and get more functional device than just noisy router.
As far as I know RB1100AHx2 is capable of 1 Gbps NAT at 85% CPU load which is also not very impressive result.
You could go to a UBNT Edge router, but it has it’s own limitations and problems. So do the research before you do, because it uses hardware acceleration if you use anything outside of it, it’s performance will become worse then the RB2011.
