High CPU load or not?

Hardware MikroTik hardware general
1

Hy, a few days ago i bought a RB450G routerboard
The problem is the CPU load. On the most part of the time is up to 100 %. No TCP SYN flood, or UDP.

NR of connexions: 15000 (total ip’s conected to the router from outside.“PS: I have hub hosting”)
Trafic: 40 Mbps
Configuration: eth1 - Internet provider
eth2-5 bridged togheder and share /24 ip class
No firewall rule added or queues.

Or 2000 connexions
Trafic 5 Mbps =>>CPU 40 %

When the CPU is 100 % i have imense lag, even local ping failures.
Is it normal ?

2

How about, instead of bridging ports 2-5, you put them in switch mode?
Will save you a ton of CPU.

3

And what RouterOS you use?

4

MikroTik RouterOS 3.25 (c) 1999-2009

I’ve tried to use eth1 as gateway and eth2 directly conected to linux server but it is worse. The lag is much higher. And the router gives kernel failures and restarts itself.
DC Power : 18 V, 4A

5

I have same configuration but PSU is 24V; 0.8A I don’t have any problem more then 1 year. WAN trafic some times goes up to 100-200mbit
scr.jpg

6

I think the power is not the problem. something else… i don’t know
For example… at 4 am is not trafic (max 4 mbps) but cpu 50 % :frowning:
I’ve tried to reset the router… and upload the back-up again but still the same ting…
Other ideas? Is it possible that the routerboard to have an error in OS? or some hardware damaged ?

7

Run /system check-installation in terminal . Else you can open RB case and check electrolytic capacitors.

http://forum.mikrotik.com/t/rb450-capacitors-problem/35257/1

8

upgrade to 3.30 or even to version 4.6 (check if everything is ok with license while upgrading and after upgrade) also, create supout.rif file and set it to distributor you bout device from.

i would suggest to double-check the settings if everything makes sense. as RB450G is quite powerful.

9

[admin@MikroTik] > /system check-installation
package routing-test is disabled
checking advanced-tools package…
package ipv6 is disabled
checking routing package…
checking routerboard package…
checking hotspot package…
checking ppp package…
checking wireless package…
checking dhcp package…
checking security package…
checking system package…
done

The capacitors are fine but de LEDs from every port is lightening verry slow, when cables are unplugged.

janisk how do i upgrade, do you have a tutorial please?

10

this is how you upgrade:
http://wiki.mikrotik.com/wiki/Upgrading_RouterOS


this is what else you can do with packages and some meanings one what they are for:
http://wiki.mikrotik.com/wiki/Packages

11

Tested the router again after upgrading… Still the same thing. I think the router doesen’t suport huge number of simultaneos connexions. Sorry but mikrotik is a bad idea and not good.

12

using abstract values like “huge” wont help you solve the problem you are having. What is huge, maybe for that load you should have gotten RB1000?

13

Huge = 20.000 unique ip connexions in rush hour and bandwidth 50 mbps.

For example a hosted hub requires an ip. And that hub have’s for example 300 users, that means 300 ip’s that router have to maintain and forward to hub ip. A hub with 300 users,consumes 30 KB /s

14

Now i have the following configuration

two bridges

bridge 1 - ether 0, ether 1
bridge 2 - ethet 2, ether 3, ether 4

Provider internet cable → ether0 - > out to server eth0 via ether1

Out from server via eth1 - > to router ether2 → out from router to server 2 via ether 3, ether 4 and 5 to clients.

I’m using firewall on bridge interfaces and queues.

The procesor stays below 60 % when is rush hour and 40 mbps bandwith on upload, download below 10 mbps

Why doesen’t work with initial configuration ?? (provider - > router with dhcp configured /24 class) the trafic is the same. :frowning: