Pilz PSSnet SHL 8T MRP - Manual (Page 74)

Rapid Spanning Tree
74
4.6 The Rapid Spanning Tree
Protocol
PSSnet SHL - Redundancy Configuration
Pilz GmbH & Co. KG, Felix- Wankel Str. 2, 73760 Ostfildern
Figure 38: Definition of diameter and age
The diameter is the number of connections between the two devices furthest
away from the root bridge.
The parameters
– Forward Delay and
– Max Age
have a relationship to each other:
Forward Delay >= (Max Age/2) + 1
If you enter values that contradict this relationship, the device then
replaces these values with a default value or with the last valid values.
As required, change and verify the settings and displays that relate
to each individual port (menu bar: Rapid Spanning Tree - Port).
= Root
1
Diameter = 7
Age = 5
2 3 4 5
1 2 3 4 5
6 7
Age = 4
1 2 3 4