show spanning-tree summary root


show spanning-tree summary root [vsx-peer]


Shows the summary of spanning tree root and configurations for all VLANs.

Command context

Operator (>) or Manager (#)



Shows the output from the VSX peer switch. If the switches do not have the VSX configuration or the ISL is down, the output from the VSX peer switch is not displayed.


Operators or Administrators. Users without administrator authority can execute this command from the operator context (>) only.


Showing summary of spanning tree configurations:

switch# show spanning-tree summary root
Spanning tree status: Enabled Protocol: RPVST
Root bridge for VLAN : 1

                                      Root    Hello Max Fwd
VLAN     Priority     Root ID         cost    Time  Age Dly Root Port
-------- -------- ----------------- --------- ----- --- --- ------------
VLAN1    32768    70:72:cf:32:50:f5         0     2  20  15           NA
VLAN2    32768    70:72:cf:32:50:f5       200     2  20  15        1/1/1