RB450G Maximum speed problem

Hardware MikroTik hardware general
1

Hello,

i am using RB450G in my data center, i set it up as bridge. so i can grab the traffic graph to display mrtg on the web.
the maximum speed at the data center is 1 Gbps, i choose RB450G because it has all gigabits ports. the the fact is i didn’t get even close to 100 Mbps. maximum speed could reach is only 52 Mbps, average 37 Mbps.
although processor load was only reach 50% top, average lower than 40%

is there any other way to increase the maximum speed on my RB450G…?

2

The RB450G is NOT a 5 ports gigabit router.
It has 5 ports, yes, but hardware is totally different from what you might think: basically, there is only 2 Gb NICs, one on port 1, and one for the 4 other ports (a switch).

  +-----------+       +-----------+
  |           | eth0  |           |
  |           +-------+----------5+-Eth1 (POE)
  |           |       |           |
  |  AR7161   |       | AR8316 +-1+-Eth2
  |           | eth1  |        +-4+-Eth3
  |           +-------+0-------+-3+-Eth4
  |           |       |        +-2+-Eth5
  +-----------+       +-----------+

So you have no chance to get wirespeed routing whatsoever.


For more details, see: http://wiki.openwrt.org/toh/mikrotik/rb450g

3

So, logically there are 2 ports/eth inside RB450G. eth o and eth 1.
which eth 0 fully gigabit port and the eth 1 is actually a gigabit port which shared into 4 eth ports, is that right.?

i am a newbie with mikrotik, if i use openwrt, will it go faster than standard routeros.?


Thank you

4

Out of curiosity, how does this compare to the 2011 boards? What is the chip/switch layout for those?

5

With OpenWRT, I benched it on a single threaded file transfert (repeatedly, and avoiding any cache effect), and I saw a real small loss in performance. But as for features and stability, it’s not even comparable, if you see what I mean…
As for 2011 board, I don’t know. I know that 1100 though are build on the same 450G model (even worse in a sense as you have 2 separate switch chips).

6

well… I think not much can be expected from a RB450G with a huge traffic such as in a data center (1 Gbps), although RB450G only functioned as a bridge.

next, i prefer cloud core router.

Thank you :slight_smile:

7

Check to see how many switches are in your mikrotik router, use winbox and select switch and port. Look at the list of ether ports and their associated switches. If you see more than one switch# then you can increase throughput by eliminating bridging ports and assigning 2nd port to be hardware switched (as apposed to software switched via bridging). Do this with interface master port and assign the 2nd port (your choice on this) to be locked to the 1st port. You will only program everything to the master port only and leave the slave port alone.

If you only see one switch#, then your overworking the unit or not testing the throughput correctly or you have data corruption. The way I tested throughput was to use 2 mikrotiks and one of them becomes the Tools BTest Server and the other Tools Bandwidth Test client.

Data corruption can be viewed in the lost packets while you do the throughput test.