Linux : brctl

# brctl show
bridge name     bridge id               STP enabled     interfaces
104dcfa38e              8000.a0d3c1f34980       no              eth0
                                                        vif19.0
                                                        vif19.0-emu
                                                        vif21.0
108b829071              8000.a0d3c1f34983       no              eth3
                                                        vif19.1
                                                        vif19.1-emu
                                                        vif21.1
# brctl showstp 108b829071
108b829071
 bridge id              8000.a0d3c1f34983
 designated root        8000.a0d3c1f34983
 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             0.00                 bridge forward delay       0.00
 ageing time             300.00
 hello timer               0.27                 tcn timer                  0.00
 topology change timer     0.00                 gc timer                   8.36
 hash elasticity           4                    hash max                 512
 mc last member count      2                    mc init query count        2
 mc router                 1                    mc snooping                0
 mc last member timer      1.00                 mc membership timer      260.00
 mc querier timer        255.00                 mc query interval        125.00
 mc response interval     10.00                 mc init query interval    31.25
 flags


eth3 (0)
 port id                0000                    state                forwarding
 designated root        8000.a0d3c1f34983       path cost                  4
 designated bridge      8000.a0d3c1f34983       message age timer          0.00
 designated port        8001                    forward delay timer        0.00
 designated cost           0                    hold timer                 0.00
 mc router                 1
 flags

vif19.1 (0)
 port id                0000                    state                forwarding
 designated root        8000.a0d3c1f34983       path cost                100
 designated bridge      8000.a0d3c1f34983       message age timer          0.00
 designated port        8003                    forward delay timer        0.00
 designated cost           0                    hold timer                 0.00
 mc router                 1
 flags

vif19.1-emu (0)
 port id                0000                    state                forwarding
 designated root        8000.a0d3c1f34983       path cost                100
 designated bridge      8000.a0d3c1f34983       message age timer          0.00
 designated port        8004                    forward delay timer        0.00
 designated cost           0                    hold timer                 0.00
 mc router                 1
 flags

vif21.1 (0)
 port id                0000                    state                forwarding
 designated root        8000.a0d3c1f34983       path cost                100
 designated bridge      8000.a0d3c1f34983       message age timer          0.00
 designated port        8002                    forward delay timer        0.00
 designated cost           0                    hold timer                 0.00
 mc router                 1
 flags

# brctl showmacs 108b829071