Display Spanning Tree Configuration - Dell Force10 S2410-01-10GE-24P Configuration Manual

1. Configure switch R7. Enable STP globally and on associated ports; create MST instances and
associated VLANs:
R4 (Config)#interface vlan
R4 (Conf-if-vl-2)#tagged 1/0/2
R4 (Conf-if-vl-2)#tagged 1/0/3
R4 (Conf-if-vl-2)#exit
R4 (Config)#interface vlan 3
R4 (Conf-if-vl-3)tagged 1/0/2
R4 (Conf-if-vl-3)tagged 1/0/3
R4 (Config)#spanning-tree
R4 (Config)#spanning-tree configuration name span1
R4 (Config)#spanning-tree configuration revision 1
R4 (Config)#spanning-tree msti instance 2
R4 (Config)#spanning-tree msti vlan 2 2
R4 (Config)#spanning-tree msti instance 3
R4 (Config)#spanning-tree msti vlan 3 3
R4 (Config)#interface 1/0/2
R4 (Interface 1/0/2)#no shutdown
R4 (Interface 1/0/2)#spanning-tree port mode enable
R4 (Interface 1/0/2)#exit
R4 (Config)#interface 1/0/3
R4 (Interface 1/0/3)#no shutdown
R4 (Interface 1/0/3)#spanning-tree port mode enable
R4 (Interface 1/0/3)#exit
2. Configure switch R4, exactly as above. The fact that this example shows the same port numbers
participating in the same two VLANs on each participating switch — R4, R5, and R7 — is simply an
expedient way to clone the configuration steps.
3. Configure switch R5, exactly as above.
4. Use the
show spanning-tree
and
show spanning-tree mst port summary
ports participating in the spanning tree.
Note: Another configuration example is in

Display Spanning Tree Configuration

Use the following commands to display MSTP configuration.
Command Syntax
show spanning-tree summary
show spanning-tree [ brief ]
show spanning-tree mst summary
2
command to verify the STP convergence (see
command (see
Example of configuring STP on page
Command Mode
Privileged Exec
Privileged Exec
Privileged Exec
MST instance ID followed by VLAN ID
Figure 10-119 on page
Figure 10-125 on page
Purpose
Display STP settings and parameters for the switch.
See Figure 10-116 on page
Display settings and parameters for the CIST. See
Figure 10-118 on page 159.
Display settings and parameters for all MST
instances.
159)
162) for behavior of
152.
158.
Spanning Tree | 157