Spanning tree configuration menu – Cabletron Systems SmartSTACK ELS100 User Manual
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ELS100-24TX User Interface 31
Spanning Tree Configuration Menu
The Spanning Tree Configuration Menu allows you to view and modify 
Spanning Tree parameters. Select b from the Switch Configuration Menu 
to view the Spanning Tree Configuration Menu. A letter identifies 
selections that can be modified. All other fields are read-only. Figure 3-8 
shows the Spanning Tree Configuration Menu and the accompanying 
table describes the Spanning Tree Configuration Menu.
Figure 3-8. Spanning Tree Configuration Menu
continued on next page
SPANNING TREE CONFIGURATION
Access Control: READ/WRITE
Bridge ID
32768-000000000000
 Designated Root
 Root Path Cost 
0
Root Port
NO PORT
Topology Change Count
0
a. Spanning Tree Protocol Enable
No
b. Port Configuration Menu
c. Hello Time (seconds) 
2
d. Forward Delay (seconds)
15
e. Max Age (seconds)
20
f. Bridge Priority
32768
x. Previous Menu
Enter Selection:
Field
Description
Bridge ID
A unique identifier for the bridge (switch) in the Spanning 
Tree. The ID is a combination of the bridge priority and 
port 1 MAC address.
Designated Root
The bridge in the Spanning Tree with the lowest Bridge 
ID value, designated as the root bridge.
Root Path Cost
The cost of the path to the root bridge.
Root Port
The port identifier of the port that offers the lowest cost 
path to the root bridge.
Topology Change 
Count
The count of the number of times the network topology 
has changed from a Spanning Tree reconfiguration.
