Ethernet bridging on MPC8248

Ethernet bridging on MPC8248

[Ole Andreas Torvmark]

Hi !

I've a custom board with a MPC8248 with two LXT972 10/100MBit ethernet phys.

The board is running 2.6.9-rc1, and I'm using the FCC ENET Version 0.3 
driver with some modifications.

My question is :

I've tried to get ethernet briding between the two ethernet ports to work.

I've set up the following :

ifconfig eth0 0.0.0.0
ifconfig eth1 0.0.0.0
brctl addbr br0
brctl addif br0 eth0
brctl addif br0 eth1
ifconfig br0 192.168.0.222 netmask 255.255.255.0

If I connect a machine to port 0 (eth0) then I can ping the bridge from 
that machine,
If I connect a machine to port 1 (eth1) I cannot ping the bridge.
If I connect machines to both ports, I cannot ping one machine from the 
other, the only thing i can successfully ping is from port 0 to bridge 
and from bridge to port 0

Is this a known problem with the FCC ENET driver or does it support 
bridging fully ?

best regards

Ole Andreas Torvmark
R & D Engineer
Radionor Communications AS

Re: Ethernet bridging on MPC8248

[jbi130]

Ole Andreas Torvmark <ole.torvmark@radionor.no> writes:

> ifconfig eth0 0.0.0.0
> ifconfig eth1 0.0.0.0
> brctl addbr br0
> brctl addif br0 eth0
> brctl addif br0 eth1
> ifconfig br0 192.168.0.222 netmask 255.255.255.0
> 
> If I connect a machine to port 0 (eth0) then I can ping the bridge
> from that machine,
> 
> If I connect a machine to port 1 (eth1) I cannot ping the bridge.
> If I connect machines to both ports, I cannot ping one machine from
> the other, the only thing i can successfully ping is from port 0 to
> bridge and from bridge to port 0
> 
> Is this a known problem with the FCC ENET driver or does it support
> bridging fully ?

Have you made sure that eth0 and eth1 are 'up'?  eg) ifconfig eth0 up.
I'm not sure, but br0 may need to be up as well.

RE: Ethernet bridging on MPC8248

[Bastos Fernandez Alexandre]

Hi Ole,

Maybe those mails from archives would answer your questions. As long as
I know this is still present in kernel:

http://ozlabs.org/pipermail/linuxppc-embedded/2004-October/015617.html
http://ozlabs.org/pipermail/linuxppc-embedded/2004-October/015620.html

So, you have to change set_multicast_list to support the promiscous mode
needed by your bridge.

Best regards,

Alex.

> -----Original Message-----
> From:	Ole Andreas Torvmark [SMTP:ole.torvmark@radionor.no]
> Sent:	Monday, May 02, 2005 11:28 AM
> To:	linuxppc-embedded@ozlabs.org
> Subject:	Ethernet bridging on MPC8248
> 
> Hi !
> 
> I've a custom board with a MPC8248 with two LXT972 10/100MBit ethernet
> phys.
> 
> The board is running 2.6.9-rc1, and I'm using the FCC ENET Version 0.3 
> driver with some modifications.
> 
> My question is :
> 
> I've tried to get ethernet briding between the two ethernet ports to work.
> 
> I've set up the following :
> 
> ifconfig eth0 0.0.0.0
> ifconfig eth1 0.0.0.0
> brctl addbr br0
> brctl addif br0 eth0
> brctl addif br0 eth1
> ifconfig br0 192.168.0.222 netmask 255.255.255.0
> 
> If I connect a machine to port 0 (eth0) then I can ping the bridge from 
> that machine,
> If I connect a machine to port 1 (eth1) I cannot ping the bridge.
> If I connect machines to both ports, I cannot ping one machine from the 
> other, the only thing i can successfully ping is from port 0 to bridge 
> and from bridge to port 0
> 
> Is this a known problem with the FCC ENET driver or does it support 
> bridging fully ?
> 
> best regards
> 
> Ole Andreas Torvmark
> R & D Engineer
> Radionor Communications AS
> 
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