Checking The Configuration; Maintaining Mstp - Huawei Quidway S9300 Configuration Manual

Quidway S9300 Terabit Routing Switch
Configuration Guide - Ethernet
The stp tc-protection threshold command sets the number of times the MSTP process parses
TC packets in a certain period of time. By default, this period of time is 2 seconds, and the MSTP
process parses TC packets 3 times in 2 seconds.
When the S9300 receives a TC packet, it deletes the related ARP entries and MAC address
entries. It the S9300 receives too many TC packets in a certain period, the CPU usages stays
high. To prevent this problem, you can configure the TC packet suppression function.
----End

8.5.6 Checking the Configuration

Procedure
Step 1 Run the display stp [ instance instance-id ] [ interface { interface-type interface-number [ to
interface-number ] } &<1-10> ] [ brief ] and display stp [ instance instance-id ] [ slot slot-
id ] [ brief ] command to check the state and statistics of a spanning tree.
----End
Example
Run the display stp command, you can check whether BPUD is enabled and view the protection
type. The following is an example:
<Quidway> display stp instance 0 interface gigabitethernet 1/0/0
-------[CIST Global Info][Mode MSTP]-------
CIST Bridge
Bridge Times
CIST Root/ERPC
CIST RegRoot/IRPC
CIST RootPortId
BPDU-Protection
TC or TCN received
STP Converge Mode
Time since last TC
----[Port3(GigabitEthernet1/0/0)][FORWARDING]----
Port Protocol
Port Role
Port Priority
Port Cost(Dot1T )
Desg. Bridge/Port
Port Edged
Point-to-point
Transit Limit
Protection Type
Port Protocol Type
PortTimes
BPDU Sent
BPDU Received

8.6 Maintaining MSTP

This section describes how to clear the statistics of MSTP and debug MSTP.
8.6.1 Clearing MSTP Statistics
8.6.2 Debugging MSTP
Issue 03 (2009-08-20)
:32768.00e0-fc0e-a421
:Hello 2s MaxAge 20s FwDly 15s MaxHop 20
:32768.00e0-fc0e-a421 / 0
:32768.00e0-fc0e-a421 / 0
:0.0
:disabled
:8
:Fast
:0 days 23h:9m:30s
:enabled
:CIST Designated Port
:128
:Config=100 / Active=100
:32768.00e0-fc0e-a421 / 128.1229
:Config=disabled / Active=disabled
:Config=auto / Active=true
:3 packets/hello-time
:None
:Config=auto / Active= dot1s
:Hello 2s MaxAge 20s FwDly 15s RemHop 0
:43
TCN: 0, Config: 0, RST: 0, MST: 43
:3
TCN: 0, Config: 0, RST: 0, MST: 3
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8 MSTP Configuration
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