Contec DS110-APL User Manual
Spanning Tree Algorithms (STA)
FX-DS110-APL
42
Sample STA Application
This section describes examples of configurations in which network
loops occur, and how the application of an STA determines the
backup path.
loops occur, and how the application of an STA determines the
backup path.
LAN1
LAN2
LAN3
LAN4
LAN5
Priority
10
Priority
30
Priority
40
Priority
20
Priority
50
Port 1
Bridge 1
Port 2
Bridge 1
Port 2
Port 1
Bridge 5
Port 2
Bridge 5
Port 2
Port 1
Bridge 2
Port 2
Bridge 2
Port 2
Port 1
Bridge 4
Port 2
Bridge 4
Port 2
Port 1
Bridge 3
Port 2
Bridge 3
Port 2
Figure 6.1. Sample STA Application
All settings other than bridge priority settings are identical.
The root bridge is determined by the priority settings of each
bridge.
bridge.
Root bridge
Bridge 1
The designated bridge for each LAN segment is determined by
root path cost.
root path cost.
LAN1
Bridge
1
LAN2
Bridge
1
LAN3
Bridge
2
LAN4
Bridge
3
LAN5
Bridge
5