bridge configuration

CARLiCiOUS · 03-15-2005, 09:29 AM

Hello,
recently I have bought 2 wireless network adapters, 1 for in my server/router and 1 for in an older computer (t-bone), I have another (newer) computer (n2o) connected with the server through ethernet.
So this is the situation:

Code:

                                       [internet]
                                            |
old computer                            [ eth0 ]                     new computer
[ t - bone ][ wlan0 ] ------- [ wlan0 ][ server ][ eth1 ] ------- [ eth0 ][ n2o ]

on my server, wlan0 and eth1 are bridged in br0, eth0 is routed to br0 to let everything access the internet.
This is all good and fine, no problems, but when i'm behind t-bone I can't ping n2o and vice versa.

How to get this fixed ? I thought this would work with the bridge br0, but I found out it wouldn't

I have the bridge module compiled and loaded into the kernel,
I used the following commands to get the bridge up:
ifconfig eth1 0.0.0.0 promisc up
ifconfig wlan0 0.0.0.0 promisc up
brctl addbr br0
brctl addif br0 eth1
brctl addif br0 wlan0
ifconfig br0 10.0.0.2 netmask 255.0.0.0 up

cheers.

fr_laz · 03-15-2005, 11:18 AM

Hi,

Just a remark, I don't think it will solve your problem.
When I use "ifconfig eth0 10.0.0.1 netmask 255.255.255.0", I don't have the right broadcast address : my Linux box uses 10.255.255.255 and not 10.0.0.255.
So I use ifconfig eth0 10.0.0.1 netmask 255.255.255.0 broadcast 10.0.0.255...

Another thing : you've got the brctl show command so as to check your bridge topology... maybe that will give you more infos.

CARLiCiOUS · 03-15-2005, 01:17 PM

that broadcast/netmask thingy won't be the problem, since the whole network uses dhcp, which is configured to give everyone 255.0.0.0 and bcast 10.255.255.255.

this is the output from brctl show:

Code:

bridge name     bridge id               STP enabled     interfaces
br0             8000.000b6a23de6a       yes             eth1
                                                        wlan0