Mstp Example 2 - Lenovo RackSwitch G8264 Application Manual

MSTP Example 2
1. Configure port membership and define the STGs for VLAN 1. Enable tagging on
2. Configure MSTP: Spanning Tree mode, region name, and version.
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G8264 Application Guide for ENOS 8.4
This configuration shows how to configure MSTP Groups on the switch, as shown
in Figure 14.
Figure 15. Implementing Multiple Spanning Tree Groups
Enterprise
Routing Switch
MSTP Group 1
Root
Passing VLAN 1
Blocking VLAN 2
Server 1
VLAN 1
This example shows how multiple Spanning Trees can provide redundancy
without wasting any uplink ports. In this example, the server ports are split
between two separate VLANs. Both VLANs belong to two different MSTP groups.
The Spanning Tree priority values are configured so that each routing switch is the
root for a different MSTP instance. All of the uplinks are active, with each uplink
port backing up the other.
uplink ports that share VLANs. Port 19 and port 20 connect to the Enterprise
Routing switches.
RS G8264(config)# interface port 19, 20
RS G8264(config­if)# switchport mode trunk
RS G8264(config­if)# exit
RS G8264(config)# spanning­tree mst configuration
RS G8264(config­mst)# name MyRegion
RS G8264(config­mst)# revision 100
RS G8264(config­mst)# exit
RS G8264(config)# spanning­tree mode mst(Set mode to Multiple Spanning Trees)
Blocking VLAN 1
Passing VLAN 2
Server 2 Server 3 Server 4
VLAN 1 VLAN 2 VLAN 2
(Define the Region name)
(Define the Revision level)
Enterprise
Routing Switch
MSTP Group 2
Root