Enlarging LAN with 751U's

Hey guys I am new to MikroTik devices and to networking in all…

Schema: MT1 – first mikrotik main gateway
MT2 – second mikrotik, repeating MT1
MT3 - third mikrotik, repeating MT2

I am experiencing problem with enlarging LAN with using a repeaters. Last week I set a MikroTiks as following

MT1 - Main Gateway

[b]DHCP[/b]:on
[b]Mode[/b]= ap-bridge
[b]Wlan1[/b]= static wds, freq 2452, band 2ghz-b/g/n, country Poland
[b]Wds1[/b]=wds-address: MT2 address master=wlan1
[b]Bridge-local:[/b] port wlan1 wds1

MT2

[b]Mode[/b]=ap-bridge
[b]Wlan1[/b]=static wds, freq 2452, band2ghz-b/g/n, country Poland, wds static
[b]Wds1[/b]=wds-address: MT1 address master=wlan1
[b]Bridge-local[/b]= port wlan1 wds1

When I connected MT2 to MT1 everything worked fine! Wds were registered on both MT’s and the network has been broadcasted.

Today I wanted to enlarge it even more adding MT3. So I added to MT2

wds2=wds-address:MT3 address, added this wds2 to bridge-local

Then I set MT3:

[b]Mode[/b]=ap-bridge
[b]Wlan1[/b]=static wds, freq 2452, band 2ghz-b/g/n, country Poland, wds static
[b]Wds1[/b]=wds-address: MT2 address, master=wlan1
[b]Bridge-local[/b]= port wlan1 wds1

Unfortunately connection between MT3 and MT2 is estabilished, winbox shows that wds’es are registered on both routers, the network is broadcasted but when I try to connect to it the IP addresses are not downloaded from main gateway with dhcp turned on and even when I entered them manually I have no internet access. Tried to set MT2 and MT3 in station-wds modes and I managed to get to the point when they were connected in CPE mode but the wds couldnt get registered in this mode so I came back to play with ap-bridge mode.


I am using 3 MT’s RouterBoard 751U HnD. As I said before im new to networking and especially RouterOS which on the beginning, at least for me, is complicated as hell..

Regards,
Krzysztof Szarlej

noone knows how to help me?

You have to use ap-bridge to do repeaters but I would not recommend adding more than one this way, it will kill your throughput. If it is at all possible it is better to run cable between them or use other wireless point-to-points for backhauls.