Users Guide

Configure and verify MSTP
OS10(config)# spanning-tree mode mst
OS10(config)# do show spanning-tree
show spanning-tree mst configuration
Region Name: abc
Revision: 0
MSTI VID
0 1,7-4093
1 2
2 3
3 4
4 5
5 6
Add or remove interfaces
By default, all interfaces are enabled in L2 switchport mode, and all L2 interfaces are part of spanning-tree.
• Disable spanning-tree on an interface in INTERFACE mode.
spanning-tree disable
• Enable MST on an interface in INTERFACE mode.
no spanning-tree disable
Create instances
You can create multiple MSTP instances and map VLANs. To take full advantage of the MSTP, create multiple MSTIs and map VLANs to
them.
1. Enter an instance number in CONFIGURATION mode.
spanning tree mst configuration
2. Enter the MST instance number in MULTIPLE-SPANNING-TREE mode, from 0 to 63. For Mt. Echo platform, the MULTIPLE-
SPANNING-TREE mode is from 0 to 61.
NOTE:
Mt. Echo platform supports a total of 64 instances, out of which 1 is reserved for VLT Control VLAN, 1 for L3
VLAN, and 1 for default STP instance. When running rapid-pvst flavor, one instance is allocated for each VLAN until
the number of VLAN reaches 61. VLANs after 61 are mapped to default instance.
instance instance-number
3. Enter the VLAN and IDs to participate in the MST instance in MULTIPLE-SPANNING-TREE mode, from 1 to 4096.
instance vlan-id
Create MST instances
OS10(config)# spanning-tree mst configuration
OS10(conf-mst)# name Dell
OS10(conf-mst)# revision 100
OS10(conf-mst)# instance 1 vlan 2-10
OS10(conf-mst)# instance 2 vlan 11-20
OS10(conf-mst)# instance 3 vlan 21-30
View VLAN instance mapping
OS10# show spanning-tree mst configuration
Region Name: Dell
Revision: 100
MSTI VID
0 1,31-4093
1 2-10
2 11-20
3 21-30
Layer 2
445