RB751U-2HnD cannot run 300mb

RouterOS Wireless Networking
1

Hi there ,
i am totally new to the microtik world. I have a RB751U-2HnD and bought a TP-Link Adaptor - TL-WN881ND ( not dual band, 300mb). So i am trying to set the connection between them to 300mb, but can only achieve 150mb. I have played allot with TX power and different antenna chains, but the max speed i get is 150mb (real test speed is 65-70mb) so i have no idea what am i doing wrong. Have tried to set only N-connections and other options regarding Channel Width, but no success. The two adapters are in the same room, 2m away. If someone can help me, it will be great. I have searched the web, parts of the forum too, but have not found a direct answer/solution for my “problem”

Any help will be appreciated greatly !
Thanks in advance.

2

Are you aware that this device only has 100Mbit Ethetnet ports? If yes, why do you need anything faster?

3

Sure i dont need more than 100mb , but i am curious. I am doing somthing wrong and i want to know what. I am sure i cna reach that speed with that router and i want to know how. :smiley:

4

Would be esiest if you posted ‘/interface wireless export compact’

I’ll guess your unable to get above MCS7, as your running 20MHz channels.


/Paetur @ Tapatalk

5

Sorry for the delay … here is the info you requested:

"/interface wireless
set 0 band=2ghz-b/g/n channel-width=20/40mhz-ht-above country=bulgaria disabled=no distance=indoors ht-rxchains=1
ht-txchains=1 l2mtu=2290 mode=ap-bridge ssid=MikroTik-6870DB wireless-protocol=802.11
/interface wireless security-profiles
set [ find default=yes ] authentication-types=wpa-psk,wpa2-psk group-ciphers=tkip,aes-ccm mode=dynamic-keys
unicast-ciphers=tkip,aes-ccm wpa-pre-shared-key=xxxxxx wpa2-pre-shared-key=xxxxxxx "

is this the info you asked for ?

6

I am curious,this device capable of 100 Mbit/sec TCP speed,but it has got only 400 Mhz CPU

7

Do not forget. 100 Mbps is a physical speed. Real traffice is less by 25% for overhead of the TCP protocol. So you will never achieve faster than 75-80 MBps. And if you have that, it is very very good, especially on 2,4 GHz.

HD streaming is max 20 MBps. So you can easily watch 2-3 HD “streaming pictures” (the word which starts with “mo…” is not allowed to be mentioned in the post) at the same time.

In practice: only one HD film streming is posisble.

8

I could achieved,only 40 Mbit/sec TCP speed,i tried with FTP,but without Nv2,my Samsung laptop support 150 Mbit/sec with 40 Mhz channel bandwith