Hi to all,
what does item Bridge Mode: in wireless interface means?
I’m using AP bridge and I’m wondering does this have to be enabled or disabled?
Thx, Petar
I am interested in this answer also.
From what i understand the “Bridge” Feature is a Mikrotik feature that will perform layer 2 bridging between two mikrotik devices without using any other type of tunneling (EOIP, VPLS, etc)
That’s what the interface/bridge is for right?
Please read here: http://wiki.mikrotik.com/wiki/Manual:Wireless_Station_Modes
Very quickly:
Same as wds, but without creating a new interface for each wds. Has the same speed limitations because the 802.11 frame is still built with the 4 mac.
Need to have a very careful design to avoid loops.
On AP you need to have bridge-mode=enabled and on cpe you can enable mode=station-bridge
Mikrotik proprietary.
I hope this helps a little bit.
Best regards,
So I guess its a good way to pass the correct mac addresses of clients.
I guess it can’t be used in situation that I have where all my wlan’s are AP Bridge, no stations at all?
Petar
Has the same speed limitations because the 802.11 frame is still built with the 4 mac.
is there a speed limitation using WDS?
802.11a/b/g/n standard frame is composed by 3 MAC.
You can see it like this: PC → Access-Point - > Gateway
If you want a transparent L2 bridge, it will have to behave diferent:
“PC1” → 802.3 frame → “station-wds” → 802.11 wds frame → “AP-bridge” → 802.3 frame → “PC2”
In this case, when the frame leaves PC1, it will be an 802.3 frame, with src mac and dst mac.
When it arrives to the sation-wds device, this frame will need to be converted to 802.11 wds frame, that will be composed by 4 mac.
In this case you will have src-mac, dst-mac, station-mac, AP-mac.
Finaly, when it reaches the AP, it will need again to be converted to 802.3 frame.
Now please read about what is AMSDU, AMPDU and how it helps on 802.11n networks.
This is the reason why Mikrotik recomends using AP + station + vpls tunnel on 802.11n L2 transparent P2P links.
Best regards,
ok,
can this vpls tunnel be set up between two AP bridge wireless interfaces running 802.11b/g?
I actually need two tunnels to transport two different hotspot networks.
Any advice on that?
Petar
My recomendation would be the two devices on AP-Bridge mode with wds between them, but do not add the wds interface to any bridge.
Set ip address directly on the wds interface, and create vpls tunnel between these to hosts. You can create multiple vpls tunnels between the same hosts, just set the vpls-id diferent for each tunnel.
Best regards,
Hi Jorge,
that is interesting.
So setup will be:
RB 1
wlan
wds ip 10.10.10.1
vpls1
vpls2
vap
bridge1: wlan, vpls1
bridge2: vap, vpls2
the same on another router, except wds ip: 10.10.10.2
VPLS then uses wds for transport (ldp interface) or wlan?
Thx, I’ll try this this evening.
Petar
as a side note, from my understanding, the new “bridge” feature is faster than WDS. Not sure how it compares to mpls/vpls
Here is an example configuration on one of my routers using MPLS/VPLS Tunneling to two sites. you can add as many more as you want and using a different vpls-id as stated above:
[admin@MTK4] /mpls ldp> print
enabled: yes
lsr-id: 10.0.0.4
transport-address: 10.0.0.4
path-vector-limit: 255
hop-limit: 255
loop-detect: no
use-explicit-null: no
distribute-for-default-route: no
[admin@MTK4] /interface vpls> print
Flags: X - disabled, R - running, D - d
B - bgp-signaled, C - cisco-bgp-signale
0 R name="VPLS -> MTK5" mtu=1500 l2m
arp=enabled disable-running-chec
cisco-style=no cisco-style-id=0
pw-type=raw-ethernet
1 R name="VPLS -> MTK3" mtu=1500 l2m
arp=enabled disable-running-chec
cisco-style=no cisco-style-id=0
pw-type=raw-ethernet
[admin@MTK4] /interface bridge port> print
Flags: X - disabled, I - inactive, D - dynamic
# INTERFACE BRIDGE PRIORITY PATH-COST HORIZON
0 ether1 MTK4 -> BDHM 0x80 10 none
2 VPLS -> MTK5 MTK4 -> BDHM 0x80 10 none
3 VPLS -> MTK3 MTK4 -> BDHM 0x80 10 none