Linux Ethernet Bridging - Apr 2007 - [Bridge] why ./brctl showmacs br0 display nothing?

On Wed, 21 Mar 2007 19:28:50 +0800
"Alex" <alex@4ever-light.com> wrote:
> 
> hi:
> my box use eth0 connect my pc. but I type command "./brctl showmacs
br0", no mac addr display and the" brctl showmacs program" not
exit,always exec
> 
> # ./brctl show
> bridge name     bridge id               STP enabled     interfaces
> br0             8000.000123456789       no              eth0
>                                                         hdlc0
> # ./brctl showmacs br0
> port no mac addr                is local?       ageing timer
What kernel version?

Showmacs tries to get the information by reading /sys/class/br0/brforward
Does your system not support sysfs?  Does that file exist?

For older 2.4 system it uses an ioctl.

hi:
my box use eth0 connect my pc. but I type command "./brctl showmacs
br0", no mac addr display and the" brctl showmacs program" not
exit,always exec

# ./brctl show
bridge name     bridge id               STP enabled     interfaces
br0             8000.000123456789       no              eth0
                                                        hdlc0
# ./brctl showmacs br0
port no mac addr                is local?       ageing timer



 



Alex
2007-03-21
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