Command Manual – STP
Quidway S8500 Series Routing Switches Chapter 1
MSTP Configuration Commands
Huawei Technologies Proprietary
1-26
This configuration takes effect on the CIST and all the MSTIs. The settings of a port
whether to connect the point-to-point link will be applied to all the MSTIs where the port
belongs. Note that a temporary loop may be redistributed if you configure a port not
physically connected with the point-to-point link as connected to such a link by force.
Related command: stp point-to-point.
Example
# Configure Ethernet2/1/3 to be connected to the point-to-point link.
<Quidway>system-view
System View: return to User View with Ctrl+Z.
[Quidway] stp interface Ethernet2/1/3 point-to-point force-true
1.1.24 stp interface root-protection
Syntax
stp interface interface-list root-protection
undo stp interface interface-list root-protection
View
System view
Parameter
interface-list: Ethernet port list, containing multiple Ethernet ports and expressed as
interface-list = { interface-type interface-number [ to interface-type
interface-number ] }&<1-10>. For detail descriptions of interface-type and
interface-number parameters, refer to the corresponding descriptions in Port
Command Manual. &<1-10> means that the preceding parameters can be entered up
to 10 times.
Description
Use the stp interface root-protection command to enable Root protection on the
switch in system view.
Use the undo stp interface root-protection command to restore the default Root
protection state.
By default, Root protection is disabled.
In case of configuration error or malicious attack, the legal primary root may receive the
BPDU with a higher priority and then loose its place, which causes network topology
change errors. Due to the illegal change, the traffic supposed to travel over the
high-speed link may be pulled to the low-speed link and congestion will occur on the
network.
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