Hirschmann MACH 1040 Series, User Manual

Page: 63 / 78

Spanning Tree
Redundancy L2B
Release 6.0 07/2010
4.6 The Rapid Spanning Tree
Protocol
63
Figure 24: 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.
When necessary, change and verify the settings and displays that
relate to each individual port (dialog:
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