拓扑图如图所示 ,生成树配置完成后,查看sw2的生成树命令为( ),显示结果如下:vlan1根桥的MAC地址是( ),sw2的MAC地址是( ),这两个MAC地址( )(不相同/相同),由此可以判定出sw2( )(是/不是)vlan1的根桥;vlan10根桥的MAC地址是( ),sw2的MAC地址是( ),这两个MAC地址( )(不相同/相同),它()(是/不是)vlan10的根桥;显示的vlan1的优先级为( ),显示vlan10的优先级为( ),可见显示的优先级数值是配置的优先级数值加上vlan编码(0+10)。 sw2#show spanning-tree VLAN0001 Spanning tree enabled protocol ieee Root ID Priority 32769 Address 0002.16AB.E178 Cost 19 Port 23(FastEthernet0/23) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 0002.4AB9.5A8A Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 20 Interface Role Sts Cost Prio.Nbr Type ---------------- ---- --- --------- -------- -------------------------------- Fa0/24 Altn BLK 19 128.24 P2p Fa0/23 Root FWD 19 128.23 P2p VLAN0010 Spanning tree enabled protocol ieee Root ID Priority 10 Address 0002.4AB9.5A8A This bridge is the root Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 10 (priority 0 sys-id-ext 10) Address 0002.4AB9.5A8A Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 20 Interface Role Sts Cost Prio.Nbr Type ---------------- ---- --- --------- -------- -------------------------------- Fa0/24 Desg FWD 19 128.24 P2p Fa0/23 Desg FWD 19 128.23 P2p