Community discussions

MikroTik App
 
Leo232
just joined
Topic Author
Posts: 10
Joined: Wed Jul 02, 2014 4:17 am

Wireless settings for line topology?

Wed Jul 02, 2014 5:16 am

Hello,
My planned network consists of RB433GL routers connected with a line topology (A-B-C-D-...) by wireless links. Data forwarding is managed by OSPF. Is there possible to link my routers using one radio on every device? (On Linux this problem would be solved with AdHoc mode).
 
samsung172
Forum Guru
Forum Guru
Posts: 1191
Joined: Sat Apr 04, 2009 3:45 am
Location: Østfold - Norway
Contact:

Re: Wireless settings for line topology?

Sat Jul 05, 2014 3:04 pm

yep. Use wds (or mesh)
 
Leo232
just joined
Topic Author
Posts: 10
Joined: Wed Jul 02, 2014 4:17 am

Re: Wireless settings for line topology?

Thu Jul 10, 2014 1:02 pm

I tried to build a network with OSPF routing at L3 and mesh with default settings at L2 (scheme attached) but it becomes unstable after a few minutes of work (WDS connections remain live). What could it be? I plan to remove mesh and attach its IP addresses to WDS interfaces directly. Whether the mesh is useless in my case?
You do not have the required permissions to view the files attached to this post.
 
Leo232
just joined
Topic Author
Posts: 10
Joined: Wed Jul 02, 2014 4:17 am

Re: Wireless settings for line topology?

Wed Jul 16, 2014 4:19 am

I assigned IP addresses to WDS interfaces instead of mesh, it became more reliably in static mesh mode.
As seen in picture from previos post, my routers have two WDS connection with their neighbors. I don't need to these interfaces have been bridged because I use L3 routing over them.
If WDS connections must be a ports of mesh or ordinary bridge even so? When I set default bridge=none in wlan interface settings it doesn't work.
 
Leo232
just joined
Topic Author
Posts: 10
Joined: Wed Jul 02, 2014 4:17 am

Re: Wireless settings for line topology?

Thu Jul 17, 2014 1:03 pm

Static WDS mesh described in posts above is frequently loses connections. On one side router misses beacons and disconnects another peer.
Router 1:
16:10:37 wireless,info 4C:5E:0C:10:AE:5D@wlan2: disconnected, no beacons received 
16:10:37 route,ospf,info OSPFv2 neighbor 0.0.0.2: state change from Full to Down 
16:10:38 wireless,info wlan2: data from unknown device 4C:5E:0C:10:AE:5D, sent deauth 
16:10:38 wireless,info 4C:5E:0C:10:AE:5D@wlan2: connected, is AP, wants WDS 

Router2:
16:10:38 wireless,info 4C:5E:0C:10:AF:72@wlan2: disconnected, received deauth: class 2 frame received (6) 
16:10:38 wireless,info 4C:5E:0C:10:AF:72@wlan2: connected, is AP, wants WDS 
16:10:38 wireless,debug wlan2: failed to set bridge port for wlan2, reason: device already added as mesh port (6) 
16:10:41 route,ospf,info OSPFv2 neighbor 0.0.0.1: state change from Full to Init
In most cases connection reestablishes in a few seconds, but sometimes it falls for several hours and requires to reboot some routers.
Signal level is at -65 dBm, noise floor is -109 dBm, CCQ is 70-90% and falls during disconnect.
There are also another routers that are same connected to Router1 and Router2 and continue the wireless chain.
I know about low WDS performance but it is suitable for me. Now the network collapses when it is almost no traffic...
 
Leo232
just joined
Topic Author
Posts: 10
Joined: Wed Jul 02, 2014 4:17 am

Re: Wireless settings for line topology?

Tue Jul 22, 2014 12:16 pm

I replaced the mesh with splitted horizon bridge, set wireless mode to 802.11 instead of "any" and unchecked "Enable polling" and now it works much more stable.
 
samsung172
Forum Guru
Forum Guru
Posts: 1191
Joined: Sat Apr 04, 2009 3:45 am
Location: Østfold - Norway
Contact:

Re: Wireless settings for line topology?

Tue Jul 22, 2014 4:22 pm

use a old school rstp bridge, and put all in dynamic wds to this bridge. prioritize with rstp cost.
 
Leo232
just joined
Topic Author
Posts: 10
Joined: Wed Jul 02, 2014 4:17 am

Re: Wireless settings for line topology?

Thu Jul 24, 2014 7:59 am

I don't need bridging because of using OSPF routing over wired and wireless channels between routers. I place AP traffic into EoIP tunnel and pass it over WDS because there is no adhoc mode in MT.
Now my network works as shown on picture here. Sometime disconnection happens (it takes about 5% of channel operating time). I increased the "hw retries" and "Disconnect timeout" but it remains. Wireless debug logs are the same as above. RSSI is about -55...-75 dBm.
What could be the reason?
BTW, registration uptime sometime resets after connection reestablishing at only one side of the channel.
You do not have the required permissions to view the files attached to this post.

Who is online

Users browsing this forum: Amazon [Bot], erlinden, kos, RobertsN, Tegarrti, ToTheFull and 36 guests