debugging stp msti

Function

The debugging stp msti command enables packet debugging of a specified MSTI.

The undo debugging stp msti command disables packet debugging of a specified MSTI.

By default, the packet debugging of a specified MSTI is disabled.

Format

debugging stp msti { mstiId [ to mstiIdEnd ] } &<1-10>

undo debugging stp msti { mstiId [ to mstiIdEnd ] } &<1-10>

Parameters

Parameter	Description	Value
mstiId	Indicates the start ID of the Multiple Spanning Tree Instance (MSTI).	The value is an integer ranging from 0 to 4094, Value 0 refers to CIST. Each process supports a maximum of 65 instances.
to mstiIdEnd	Indicates the end ID of the Multiple Spanning Tree Instance (MSTI).	The value is an integer ranging from 0 to 4094, Value 0 refers to CIST. Each process supports a maximum of 65 instances.

Parameter

Description

Value

mstiId

Indicates the start ID of the Multiple Spanning Tree Instance (MSTI).

The value is an integer ranging from 0 to 4094, Value 0 refers to CIST. Each process supports a maximum of 65 instances.

to mstiIdEnd

Indicates the end ID of the Multiple Spanning Tree Instance (MSTI).

The value is an integer ranging from 0 to 4094, Value 0 refers to CIST. Each process supports a maximum of 65 instances.

Views

User view

Default Level

3: Management level

Task Name and Operations

Task Name	Operations
mstp	debug

Usage Guidelines

Usage Scenario

When using this command, you can specify to display either a MSTI or a range of MSTIs debugging information.

Example

# Enable packet debugging of MSTI 1 and MSTI 2.

<HUAWEI> debugging stp msti 1 2
Oct 10 14:49:06 2006 Quidway MSTP/8/MSG:
InstanceID: 1
MstiFlags: 2c( DESIGNATED  Forwarding )
MSTI Regional Root Identifier: 8192.00e0-fca4-9c2a
MSTI Internal Root Path Cost: 0
MSTI Bridge Priority: 8192.00e0-fca4-9c2a
MSTI Port Priority: 16.268
MSTI Remaining Hops: 20

**Table 1** Description of the **debugging stp msti** command output
Item	Description
MSTI Regional Root Identifier	Indicates the ID of the root device in the MSTI region.
MSTI Internal Root Path Cost	Indicates the cost of the MSTI internal path. The internal path is the path from the local port to the root device of the MSTI region.
MSTI Bridge Priority	Indicates the priority of the designated device in the MSTI region.
MSTI Port Priority	Indicates the priority of the designated port in the MSTI region.
MSTI Remaining Hops	Indicates the remaining hops of the BPDU packet in the MSTI region.
InstanceID	Indicates the ID of the MSTI.
MstiFlags	Indicates the flag of the MSTI. The flag field contains information about the port role and status.