Any two terminals on a switching network are connected through a specific path along which multiple devices are located. 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. Setting a proper network diameter according to the network scale helps speed up network convergence.
The switch calculates the Forward Delay, Hello time, and Max-Age based on the configured network diameter. It is recommended that you set the network diameter to configure timers.
The system view is displayed.
A network diameter is set.
By default, the network diameter is 7.
Rapid Spanning Tree Protocol (RSTP) uses a single spanning tree instance on the entire network. As a result, performance deteriorates when the network scale grows. Therefore, the network diameter cannot be larger than 7.
It is recommended that all devices on a ring network use the same network diameter.