Hi,
today we've tested the bridge-utils (kernel 2.6.15) STP in the
following scenario using the madwifi 0.9.3.2:
AP ch. 36 Sta
|----------------------|
BR1 | | BR2
|----------------------|
Sta ch. 40 AP
Unfortunately it doesn't work because every port of both the boards
remains in forwarding state.
We were expecting that one of the four ports would move to the blocking state.
Obviously one of the two board is elected as root by STP and has both
ports in forwarding state, the problem is on the other one.
Anyway, these are the configurations:
Board 1:
wlanconfig ath0 create wlandev wifi0 wlanmode ap
iwpriv ath0 mode 1
iwconfig ath0 essid tratta1 channel 36
iwpriv ath0 wds 1
ifconfig ath0 0.0.0.0 up
wlanconfig ath1 create wlandev wifi1 wlanmode sta nosbeacon
iwpriv ath1 mode 1
iwconfig ath1 essid tratta2
iwpriv ath1 wds 1
ifconfig ath1 0.0.0.0 up
brctl addbr br0
brctl addif br0 ath0
brctl addif br0 ath1
ifconfig br0 11.0.0.1/24 up
brctl stp br0 on
Board 2:
wlanconfig ath0 create wlandev wifi0 wlanmode ap
iwpriv ath0 mode 1
iwconfig ath0 essid tratta2 channel 40
ifconfig ath0 0.0.0.0 up
wlanconfig ath1 create wlandev wifi1 wlanmode sta nosbeacon
iwpriv ath1 mode 1
iwconfig ath1 essid tratta1
iwpriv ath1 wds 1
ifconfig ath1 0.0.0.0 up
brctl addbr br0
brctl addif br0 ath0
brctl addif br0 ath1
ifconfig br0 11.0.0.2/24 up
brctl stp br0 on
The interfaces associate in the right way, but this is the result of
the command brctl showstp br0:
Board 1:
# brctl showstp br0
br0
bridge id 8000.00026f408483
designated root 8000.00026f408483
root port 0 path cost 0
max age 20.00 bridge max age 20.00
hello time 2.00 bridge hello time 2.00
forward delay 15.00 bridge forward delay 15.00
ageing time 300.00
hello timer 0.35 tcn timer 0.00
topology change timer 0.00 gc timer 0.07
flags
ath0 (0)
port id 0000 state forwarding
designated root 8000.00026f408483 path cost 100
designated bridge 8000.00026f408483 message age timer 0.00
designated port 8001 forward delay timer 0.00
designated cost 0 hold timer 0.34
flags
ath1 (0)
port id 0000 state forwarding
designated root 8000.00026f408483 path cost 100
designated bridge 8000.00026f408483 message age timer 0.00
designated port 8002 forward delay timer 0.00
designated cost 0 hold timer 0.00
flags
Board 2:
# brctl showstp br0
br0
bridge id 8000.00156d539d8d
designated root 8000.00026f408483
root port 1 path cost 100
max age 20.00 bridge max age 20.00
hello time 2.00 bridge hello time 2.00
forward delay 15.00 bridge forward delay 15.00
ageing time 100.00
hello timer 0.00 tcn timer 0.00
topology change timer 0.00 gc timer 0.08
flags
ath0 (0)
port id 0000 state forwarding
designated root 8000.00026f408483 path cost 100
designated bridge 8000.00026f408483 message age timer 19.70
designated port 8002 forward delay timer 0.00
designated cost 0 hold timer 0.00
flags
ath1 (0)
port id 0000 state forwarding
designated root 8000.00026f408483 path cost 100
designated bridge 8000.00156d539d8d message age timer 0.00
designated port 8002 forward delay timer 0.00
designated cost 100 hold timer 0.69
flags
Thanks in advance for all your help
Andrea, Massimiliano and Riccardo
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