Enable Multiple Spanning Tree Globally; Add And Remove Interfaces - Dell Force10 S4810P Configuration Manual

• Preventing Network Disruptions with BPDU Guard on page 1011
• SNMP Traps for Root Elections and Topology Changes on page 875
• Configuring Spanning Trees as Hitless on page 1017

Enable Multiple Spanning Tree Globally

MSTP is not enabled by default. To enable MSTP:
Step Task
1 Enter PROTOCOL MSTP mode.
2 Enable MSTP.
Verify that MSTP is enabled using the
Figure 32-2.
Figure 32-2. Verifying MSTP is Enabled
FTOS(conf)#protocol spanning-tree mstp
FTOS(config-mstp)#show config
!
protocol spanning-tree mstp
no disable
FTOS#
When you enable MSTP, all physical, VLAN, and port-channel interfaces that are enabled and in Layer 2
mode are automatically part of the MSTI 0.
• Within an MSTI, only one path from any bridge to any other bridge is enabled.
• Bridges block a redundant path by disabling one of the link ports.

Add and Remove Interfaces

• To add an interface to the MSTP topology, configure it for Layer 2 and add it to a VLAN. If you
previously disabled MSTP on the interface using the command
command
spanning-tree 0
• Remove an interface from the MSTP topology using the command
also Removing an Interface from the Spanning Tree Group on page 1008
Command Syntax
protocol spanning-tree mstp
no disable
command from PROTOCOL MSTP mode, as shown in
show config
.
Command Mode
CONFIGURATION
PROTOCOL MSTP
, re-enable it using the
no spanning-tree 0
command. See
no spanning-tree 0
for BPDU Filtering behavior.
Multiple Spanning Tree Protocol (MSTP) | 695