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show spanning-tree stp-buffer see-all

Syntax

Description

Display the configured STP (RSTP, MSTP, VSTP) interface parameters.

Options

none

Display STP (RSTP, MSTP, VSTP) interface role/state changes that are logged into internal memory called the buffer. Entries in the buffer depend on the user configuration.

stp-instance stp-instance-id routing-instance instance-name

(Optional) Display the STP buffer for the specified stp-instance and routing instance.

vlan vlan-id routing-instance instance-name

(Optional) Display the STP buffer for the specified vlan id and routing instance.

Required Privilege Level

view

Output Fields

Table 1 describes the output fields for the show spanning-tree stp-buffer see-all command. Output fields are listed in the approximate order in which they appear.

Table 1: show spanning-tree stp-buffer see-all Output Fields

Field Name

Field Description

Level of Output

Global Events

Displays events when PPMD RX/TX queues reach 70 % of their maximum queue size. The following indicates received queue status:

  • GT — Greater than 70 % of their maximum queue size.

  • LT — Less than 70 % of their maximum queue size.

none, stp-instance, vlan

Per STP instance Information

Information about every STP instance.

none, stp-instance, vlan

Routing Inst

Routing instance to which the STP instance belongs.

none, stp-instance, vlan

STP Instance

Instance number that uniquely identifies each STP session per routing-instance.

none, stp-instance

Root Bridge

Bridge priority and bridge ID of ROOT bridge in the topology.

none, vlan

Root Port

Information about ROOT port, if any, on the local bridge at the displayed timestamp.

none, vlan

TC Received

Time at which topology change was received and on which port.

none, stp-instance, vlan

TC Generated

Time at which topology change occurred and on which port.

none, stp-instance, vlan

Port

The interface where the event is occurring.

none, stp-instance, vlan

State

STP state of the port. The following are the types of state:

  • Forwarding — Port forwards the traffic and is included in active topology and learns MAC addresses.

  • Blocking — Port does not forward traffic and is not included in active topology. Does not learn MAC addresses.

none, vlan

Role

Role of the port. The following are the types of ports:

  • Root — Port closest to the Root bridge.

  • Designated — Port sends the best BPDU on the connected segment.

  • Alternate — Port blocked for receiving more useful BPDUs from another bridge.

  • Disabled — Port is disabled. Cannot send or receive BPDUs.

none, stp-instance, vlan

Sample Output

show spanning-tree stp-buffer see-all (MX Series)

show spanning-tree stp-buffer see-all stp-instance stp-instance-id routing-instance instance-name (MX Series)

show spanning-tree stp buffer see-all vlan vlan-id routing-instance instance-name (MX Series)

Release Information

Command introduced in Junos OS Release 14.1.