7.6.2 Configuring MSTP Parameters on an Interface
Proper MSTP parameter settings achieve rapid convergence.
Pre-configuration Tasks
Before configuring MSTP parameters that affect route convergence, complete the following
task:
l Configuring MSTP
7.6.2.1 Setting the MSTP Network Diameter
Context
Any two terminals on a switching network are connected through a specific path along multiple
devices. The network diameter is the maximum number of devices between any two terminals.
A larger network diameter indicates a larger network scale.
An improper network diameter may cause slow network convergence and affect communication.
Run the stp bridge-diameter command to set an appropriate network diameter based on the
network scale, which helps speed up convergence.
It is recommended that all devices be configured with the same network diameter.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
stp bridge-diameter diameter
The network diameter is configured.
By default, the network diameter is 7.
NOTE
l RSTP uses a single spanning tree instance on the entire network. As a result, performance deterioration
cannot be prevented when the network scale grows. Therefore, the network diameter cannot be larger
than 7.
l It is recommended that you run the stp bridge-diameter diameter command to set the network
diameter. Then, the switching device calculates the optimal Forward Delay period, Hello timer value,
and Max Age timer value based on the set network diameter.
----End
Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Ethernet Switching
7 MSTP Configuration
Issue 01 (2014-11-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
251
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