HP E4510-48G, Command Reference Manual

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After specifying the current device as a secondary root bridge, you cannot change the priority of
the device.
Related commands: stp priority , stp root primary .
Examples
# Specify the current device as a secondary root bridge of MSTI 0.
<Sysname> system-view
[Sysname] stp instance 0 root secondary
stp root-protection
Syntax
stp root-protection
undo stp root-protection
View
Ethernet interface view, port group view, Layer 2 aggregate interface view
Default Level
2: System level
Parameters
None
Description
Use the stp root-protection command to enable the root guard function on the port(s).
Use the undo stp root-protection command to restore the default.
By default, the root guard function is disabled.
Note that:
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Configured in Ethernet interface view, the setting takes effect on the current interface only;
configured in port group view, the setting takes effect on all ports in the port group.
z
Configured in Layer 2 aggregate interface view, the setting takes effect only on the aggregate
interface. Configured on the member port in an aggregation group, the setting can take effect only
after the port leaves the aggregation group.
Examples
# Enable the root guard function for GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] stp root-protection
stp tc-protection
Syntax
stp tc-protection enable