IBM BladeCenter Management Module, Installation And User Manual

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Click Apply after making changes to the preceding window.
The parameters that you can change are:
Status
This drop-down menu enables you to enable the STP setting.
Max Age: [6 .. 40] <20>
The maximum age can be set from 6 to 40 seconds. At the end of the Max
Age, if a BPDU has still not been received from the root bridge, your switch
will start sending its own BPDU to all other switches for permission to
become the root bridge. If it turns out that your switch has the lowest Bridge
Identifier, it will become the root bridge.
Hello Time: (1 .. 10 Sec) <2>
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, and it is not the root bridge, the set Hello Time will be used if
and when your switch becomes the root bridge.
Note: The Hello Time cannot be longer than the Max. Age. Otherwise, a
configuration error will occur.
Forward Delay: (4 .. 30 Sec) <15>
The Forward Delay can be from 4 to 30 seconds. This is the time any port
on the switch spends in the listening state while moving from the blocking
state to the forwarding state.
Priority: (0 .. 65535 Sec) <32768>
A bridge priority can be from 0 to 65535. Zero is equal to the highest bridge
priority.
STP Port Settings
In addition to setting Spanning Tree parameters for use on the switch level, the
switch module enables for the configuration of STP on individual ports.
To define individual ports, highlight STP Port Settings on the Configure Spanning
Tree menu and press Enter.
Chapter 5. Web-Based network management
49