This command is used to display information about the state of Spanning Tree Protocol (STP).

Syntax   step-state-show

vlan vlan-id

Displays the VLAN identifier for the STP instance.

ports port-list

Displays STP ports.

instance-id instance-id-number 

Displays the STP instance ID.

name name-string

Specifies the name of the Spanning Tree Group (STG) for the STP instance.

bridge-id mac-address

Specifies the MAC address of the bridge switch.

bridge-priority bridge-priority-

Specifies the priority for the bridge switch.

root-id mac-address

Specifies the MAC address of the root switch.

root-priority root-priority-number

Specifies the priority for the root switch.

root-port root-port-number

Specifies the root port for STP.

root-port(peer) root-port(peer)-number

Specifies the peer root port for STP.

hello-time hello-time-number

Specifies the interval, in seconds, between the generation of configuration messages by the root switch.

forwarding-delay forwarding-delay-

Specifies the number of seconds that the interface waits before changing from its spanning-tree learning and listening states to the forwarding state.

max-age max-age-number]

Specifies the amount of time that the switch stores protocol information received on an interface.


Specifies if it is an internal port.


Specifies if it is a peer port or not.

Formatting Options

format fields-to-display

Display output using a specific parameter. Use all to display all possible output.

parsable-delim character

Display output formatted for machine parsing using a specified delimiter.


Display output in ascending order.


Display output in descending order.

show dups

Display duplicate entries in the output.

layout vertical|horizontal

Format the output in a vertical or horizontal layout.

show-interval seconds-interval

Repeat the show command at a specified interval.


Display column headers or not.

limit-output number

Limit the display output to a specific number of entries.


Display the number of entries in the output. This is useful with vRouter show commands.


Display full values in the output instead of scaled approximate values.


Display integer values instead of mapped values


Aggregate output by specific parameters. If sum-by fields are specified, records that have the same value in sum-by fields are combined and displayed as one aggregate record. NOTE: This option is only available for show commands that collect statistics such as connection-stats-show.

Defaults   None.

Access   CLI


Version 1.2

Command introduced.

Version 2.2

The parameter, blocking, removed, and edge, designated, alternate, backup, vlag-mirror, internal, and peer added to support RSTP.

Version 2.2.6

The parameter, root-port(peer), added.

Version 2.3

The following parameters are deprecated:










Version 2.3.1

The parameter, ports, added.

Version 2.4.1

The parameter, instance-id, added.

Usage   STP is a standard inter-switch protocol is used to ensure that an ad hoc network topology is loop-free at Layer 2, on a per VLAN basis. If your network connections form loops, and STP is disabled, packets recirculate between the switches and causes a decrease in network performance. If you are certain that your network is loop-free, you do not need to enable STP. One drawback of STP is that it does not allow for Layer 2 multipathing and may result in suboptimal utilization of available network links. Therefore, a fabric of Pluribus Networks switches does not use STP within the boundaries of the fabric. The use of STP is recommended for ad hoc networks that interoperate in a heterogeneous, multi-vendor switch environment. Use this command to enable or disable STP on the network.

Examples  To display STP information, use the following command:

CLI network-admin@switch > stp-state-show

switch:           pleiades25

vlan:             1

name:             stg-default-stg

bridge-id:        64:0e:94:18:00:8f

bridge-priority:  32769

root-id:          64:0e:94:18:00:8f

root-priority:    32769

root-port:        0

hello-time:       2

forwarding-delay: 15

max-age:          20

disabled:         none

learning:         none

forwarding:       12,56,65-66,255

discarding:       none

edge:             65-66

designated:       12,56,65-66,255

alternate:        none

backup:           none

vlag-mirror:      none


See Also