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Knowledge Base

how to adjust the STP diameter to speed up the convergence on S3700

Publication Date:  2019-07-31  |   Views:  147  |   Downloads:  0  |   Author:  cWX611640  |   Document ID:  EKB1100023639

Contents

Issue Description

how to adjust the STP diameter to speed up the convergence on S3700

Solution

To speed up the STP convergence when the topology changes, we could adjust the STP diameter on the switch.

 

Parameter hello interval, forward delay and max age should match the formula 2*(Forward Delay1.0 second) >= Max Age, or the network topology will be flapping frequently.

 

Notice: adjust the STP diameter will cause the STP recalculation, in which situation the service will be interrupted for a short time, so it’s recommeded to take this action at the leisure time.

 

configuring steps:

a.       enable STP on the switch

<Huawei>sy

Enter system view, return user view with Ctrl+Z.

[Huawei]stp mode stp

b.       configre the STP diameter

[huawei]stp bridge-diameter 5

c.       check the configuration

[Huawei]dis stp

-------[CIST Global Info][Mode STP]-------

Config Times        :Hello 2s MaxAge 16s FwDly 12s MaxHop 20

Active Times        :Hello 2s MaxAge 16s FwDly 12s MaxHop 20