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Spanning Tree Protocol (STP)
The commands in this chapter configure and monitor the IEEE 802.1d spanning tree protocol (STP) and are supported on 
the C-series, E-Series, S-series, Z-Series, or S4810 Dell Force10 switch/routing platforms.
bridge-priority
Set the bridge priority of the switch in an IEEE 802.1D spanning tree.
C-Series, E-Series, S-Series, Z-Series, S4810
Syntax
bridge-priority {priority-value | primary | secondary}
To return to the default value, use the no bridge-priority command.
Parameters
priority-value
Enter a number as the bridge priority value. The range is 0 to 65535. 
The default is 32768.
primary Enter the keyword primary to designate the bridge as the root 
bridge.
secondary Enter the keyword secondary to designate the bridge as a 
secondary root bridge.
Defaults priority-value = 32768
Command Modes SPANNING TREE (The prompt is “config-stp”.)
Command History
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 7.7.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
pre-Version 
6.2.1.1
Introduced on the E-Series.
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