HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 2 - LAN Switching Command Refer - Page 136

Usage guidelines When port role restriction is enabled on a port, the port cannot become a root port. When the setting is configured in Ethernet interface view, it takes effect on only that interface. When the setting is configured in aggregate interface view, it takes effect on only 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 FortyGigE 1/1/1. system-view [Sysname] interface fortygige 1/1/1 [Sysname-FortyGigE1/1/1] 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 ] root primary undo stp [ instance instance-list ] root Default A device is not a root bridge. Views System view Predefined user roles network-admin Parameters instance instance-list: Configures the device as the root bridge in the MSTIs that are specified by an instance list, in the format of instance-list = { instance-id [ to instance-id ] }&, where & indicates that you can specify up to 10 instances or instance ranges. The value range for the instance-id argument is 0 to 4094, and the value 0 represents the CIST. If you do not specify this option, the command configures the device as the primary root bridge in the MSTP CIST or as the primary root bridge of STP or RSTP. Usage guidelines Once you specify the device as the root bridge, you cannot change the priority of the device. Examples # In MSTP mode, specify the device as the root bridge of MSTI 1. system-view [Sysname] stp instance 1 root primary 129