display stp tc

Syntax

display stp [ instance instance-id | vlan vlan-id ] tc [ slot slot-number ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

0: Visit level

Parameters

instance instance-id: Displays the statistics of TC/TCN BPDUs received and sent by all ports in a particular MSTI. The value of instance-id ranges from 0 to 16, where 0 represents the CIST.

vlan vlan-id: Displays the statistics of TC/TCN BPDUs received and sent by all ports in the specified VLAN, in the range of 1 to 4094.

slot slot-number: Specifies the ID of a switch. The value can only be 1.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use display stp tc to display the statistics of TC/TCN BPDUs received and sent by all ports in an MSTI or all MSTIs.

In STP/RSTP mode, the displayed information is sorted by port name.

In MSTP mode, follow these guidelines:

If you do not specify any MSTI, this command displays the statistics of TC/TCN BPDUs received and sent by all ports in all MSTIs. The displayed information is sorted by instance ID and by port name in each MSTI.
If you specify an MSTI, this command displays the statistics of TC/TCN BPDUs received and sent by all ports in the specified MSTI, in port name order.

In PVST mode, follow these guidelines:

If you do not specify any VLAN, this command displays the statistics of TC/TCN BPDUs received and sent by all ports in all VLANs. The displayed information is sorted by VLAN ID and by port name in each VLAN.
If you specify a VLAN, this command displays the statistics of TC/TCN BPDUs received and sent by all ports in the specified VLAN, in port name order.

Examples

# In MSTP mode, display the statistics of TC/TCN BPDUs received and sent by all ports in MSTI 0.

<Sysname> display stp instance 0 tc slot 1
 -------------- STP slot 1 TC or TCN count -------------
 MSTID      Port                  Receive      Send
   0        Ethernet1/0/1          6          4
   0        Ethernet1/0/2          0          2

# In PVST mode, display the statistics of TC/TCN BPDUs received and sent by all ports in VLAN 2.

<Sysname> system-view
[Sysname] stp mode pvst
[Sysname] display stp vlan 2 tc slot 1
 -------------- STP slot 1 TC or TCN count -------------
 VLAN      Port                 Receive      Send
    2      Ethernet1/0/1          6          4
    2      Ethernet1/0/2          0          2

Table 30: Command output

Field	Description
Port	Port name.
Receive	Number of TC/TCN BPDUs received on each port.
Send	Number of TC/TCN BPDUs sent by each port.

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