1-15 
Task  Remarks 
Configuring an MST Region  Required 
Configuring the Work Mode of an MSTP Device  Optional 
Configuring the Timeout Factor  Optional 
Configuring the Maximum Port Rate  Optional 
Configuring Ports as Edge Ports  Optional 
Configuring Path Costs of Ports  Optional 
Configuring Port Priority  Optional 
Setting the Link Type of a Port to P2P  Optional 
Configuring the Mode a Port Uses to Recognize/Send 
MSTP Packets
 
Optional 
Enabling the Output of Port State Transition Information  Optional 
Configuring Leaf 
Nodes
Configuring 
Leaf Nodes
 
Enabling the MSTP Feature  Required 
Performing mCheck  Optional 
Configuring Digest Snooping  Optional 
Configuring No Agreement Check  Optional 
Configuring Protection Functions  Optional 
 
 
z  If both GVRP and MSTP are enabled on a device at the same time, GVRP packets will be 
forwarded along the CIST. Therefore, if you wish to advertise a certain VLAN within the network 
through GVRP in this case, make sure that this VLAN is mapped to the CIST (MSTI 0) when 
configuring the VLAN-to-MSTI mapping table. For the detailed information of GVRP, refer to GVRP 
Configuration of the Access Volume. 
z  MSTP is mutually exclusive with any of the following functions on a port: service loopback, RRPP, 
Smart Link, and BPDU tunnel. 
z  Configurations made in Layer-2 aggregate interface view can take effect only on the aggregate 
interface; configurations made on an aggregation member port can take effect only after the port is 
removed from the aggregation group. For detailed information about link aggregation, refer to Link 
Aggregation Configuration in the Access Volume.  
z  After you enable MSTP on a Layer-2 aggregate interface, the system performs MSTP calculation 
on the Layer-2 aggregate interface but not on the aggregation member ports. The MSTP enable 
state and forwarding state of each selected port in an aggregation group is consistent with those of 
the corresponding Layer-2 aggregate interface.  
z  Though the member port of an aggregation group does not participate in MSTP calculation, the 
port still reserves its MSTP configurations for participating MSTP calculation after leaving the 
aggregation group.