White Papers

switchport
spanning-tree mstp edge-port
spanning-tree MSTI 1 priority 144
no shutdown
DellEMC(conf-if-te-1/1/1)#
Flush MAC Addresses after a Topology Change
Dell EMC Networking OS has an optimized MAC address flush mechanism for RSTP, MSTP, and PVST+ that flushes addresses
only when necessary, which allows for faster convergence during topology changes.
However, you may activate the flushing mechanism defined by 802.1Q-2003 using the tc-flush-standard command, which
flushes MAC addresses after every topology change notification.
To view the enable status of this feature, use the show running-config spanning-tree mstp command from EXEC
Privilege mode.
MSTP Sample Configurations
The running-configurations support the topology shown in the following illustration.
The configurations are from Dell EMC Networking OS systems.
Figure 92. MSTP with Three VLANs Mapped to Two Spanning Tree Instances
Router 1 Running-Configuration
This example uses the following steps:
1. Enable MSTP globally and set the region name and revision map MSTP instances to the VLANs.
2. Assign Layer-2 interfaces to the MSTP topology.
3. Create VLANs mapped to MSTP instances tag interfaces to the VLANs.
(Step 1)
protocol spanning-tree mstp
no disable
name Tahiti
revision 123
MSTI 1 VLAN 100
MSTI 2 VLAN 200,300
!
552
Multiple Spanning Tree Protocol (MSTP)