Enabling Spanning Tree Protocol Globally - Dell S4820T Configuration Manual

To configure and enable the interfaces for Layer 2, use the following command.
1. If the interface has been assigned an IP address, remove it.
INTERFACE mode
no ip address
2. Place the interface in Layer 2 mode.
INTERFACE
switchport
3. Enable the interface.
INTERFACE mode
no shutdown
Example of the show config Command
To verify that an interface is in Layer 2 mode and enabled, use the show config command from
INTERFACE mode.
Dell(conf-if-te-1/1)#show config
!
interface TenGigabitEthernet 1/1
no ip address
switchport
no shutdown
Dell(conf-if-te-1/1)#

Enabling Spanning Tree Protocol Globally

Enable the spanning tree protocol globally; it is not enabled by default.
When you enable STP, all physical, VLAN, and port-channel interfaces that are enabled and in Layer 2
mode are automatically part of the Spanning Tree topology.
• Only one path from any bridge to any other bridge participating in STP is enabled.
• Bridges block a redundant path by disabling one of the link ports.
Spanning Tree Protocol (STP)
939