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Usage guidelines
After you enter MST region view, you can configure the MST region parameters, including the region
name, VLAN-to-instance mappings, and revision level.
Examples
# Enter MST region view.
<Sysname> system-view
[Sysname] stp region-configuration
[Sysname-mst-region]
stp role-restriction
Use stp role-restriction to enable port role restriction.
Use undo stp role-restriction to disable port role restriction.
Syntax
stp role-restriction
undo stp role-restriction
Default
Port role restriction is disabled.
Views
Layer 2 Ethernet interface view, Layer 2 aggregate interface view
Predefined user roles
network-admin
Usage guidelines
When port role restriction is enabled on a port, the port cannot become a root port.
When the setting is configured in Layer 2 Ethernet interface view, it takes effect only on that
interface.
When the setting is configured in Layer 2 aggregate interface view, it takes effect only on the
aggregate interface.
When the setting is configured on a member port in an aggregation group, it takes effect only after
the port leaves the aggregation group.
Examples
# Enable port role restriction on interface GigabitEthernet 1/0/1.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] stp role-restriction
stp root primary
Use stp root primary to configure the device as the root bridge.
Use undo stp root to restore the default.
Syntax
stp [ instance instance-list | vlan vlan-id-list ] root primary
undo stp [ instance instance-list | vlan vlan-id-list ] root
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