Cisco Systems 3560 Manual De Usuario

Beginning in privileged EXEC mode, follow these steps to add a description for an interface:

Use the no description interface configuration command to delete the description.

This example shows how to add a description on a port and how to verify the description:

Switch# config terminal

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)# interface gigabitethernet0/2

Switch(config-if)# description Connects to Marketing

Switch(config-if)# end

Switch# show interfaces gigabitethernet0/2 description

Interface Status         Protocol Description

Gi0/2   admin down     down     Connects to Marketing

The Catalyst 3560 switch supports these types of Layer 3 interfaces:

SVIs: You should configure SVIs for any VLANs for which you want to route traffic. SVIs are 
created when you enter a VLAN ID following the interface vlan global configuration command. To 
delete an SVI, use the no interface vlan global configuration command. You cannot delete interface 
VLAN 1.

When you create an SVI, it does not become active until it is associated with a physical port. 
For information about assigning Layer 2 ports to VLANs, see 

When configuring SVIs, you can also configure SVI autostate exclude on a port in the SVI to 
exclude that port from being included in determining SVI line-state status. See the 

Routed ports: Routed ports are physical ports configured to be in Layer 3 mode by using the no 
switchport interface configuration command. 

Layer 3 EtherChannel ports: EtherChannel interfaces made up of routed ports.

EtherChannel port interfaces are described in 

Enter global configuration mode.

interface interface-id

Specify the interface for which you are adding a description, and enter 
interface configuration mode.

description string

Add a description (up to 240 characters) for an interface.

Return to privileged EXEC mode.

show interfaces interface-id description

or

Verify your entry.

(Optional) Save your entries in the configuration file.