Configuring the Switch Modules using the Menu-driven Interface 
Setting Spanning Tree Parameters on the Switch Module Level 
 
IMPORTANT:  The factory default settings should cover the majority of installations. HP recommends 
that you keep the default settings as set at the factory unless it is absolutely necessary to change them.
To globally configure Spanning Tree Protocol (STP) on the switch module: 
1. Highlight Configure Spanning Tree Protocol on the Configuration menu. 
2. Press the Enter key. The following screen is displayed. 
 
The Configure Spanning Tree screen allows you to set the global STP parameters and 
displays the STP status. 
You can set the following: 
—  Status—Toggle to Enabled to implement STP on the switch module. 
—  Max Age—The maximum age can be set from 6 to 40 seconds. At the end of the 
maximum age, if a Bridge Protocol Data Unit (BPDU) has still not been received 
from the root bridge, your switch module will start sending its own BPDU to all other 
switches for permission to become the root bridge. If your switch module has the 
lowest bridge identifier, it will become the root bridge. 
—  Hello Time—The hello time can be set from 1 to 10 seconds. This is the interval 
between two transmissions of BPDU packets sent by the root bridge to tell all other 
switches that it is indeed the root bridge. If you set a hello time for your switch 
module, and it is not the root bridge, the set hello time will be used if and when your 
switch module becomes the root bridge. The hello time cannot be longer than the 
maximum age, otherwise, a configuration error will occur. 
—  Forward Delay—The forward delay can be from 4 to 30 seconds. This is the time 
any port on the switch module spends in the listening state while moving from the 
blocking state to the forwarding state. 
2-20  HP ProLiant BL e-Class C-GbE Interconnect Switch Menu-driven Interface Reference Guide 
 
 
HP CONFIDENTIAL Codename: DeLorean Part Number: 322858-001 Last Saved On: 2/4/03 11:56 AM