Cisco Systems WSC2960XR48FPSI Manual De Usuario

Purpose

Command or Action

Displays the switch port configuration of the interface in the
Administrative Mode and the Administrative Trunking Encapsulation
fields of the display.

show interfaces interface-id switchport

Example:

Switch#

show interfaces

Step 7

gigabitethernet1/0/2 switchport

Displays the trunk configuration of the interface.

show interfaces interface-id trunk

Example:

Switch#

show interfaces

Step 8

gigabitethernet1/0/2 trunk

(Optional) Saves your entries in the configuration file.

copy running-config startup-config

Step 9

Example:

Switch#

copy running-config

To return an interface to its default configuration, use the
default interface interface-id interface configuration
command. To reset all trunking characteristics of a trunking
interface to the defaults, use the no switchport trunk
interface configuration command. To disable trunking, use
the switchport mode access interface configuration command
to configure the port as a static-access port.

Note

startup-config

Related Topics

Feature Interactions, on page 66

Example: Configuring an IEEE 802.1Q Trunk, on page 80

Defining the Allowed VLANs on a Trunk

VLAN 1 is the default VLAN on all trunk ports in all Cisco switches, and it has previously been a requirement
that VLAN 1 always be enabled on every trunk link. You can use the VLAN 1 minimization feature to disable
VLAN 1 on any individual VLAN trunk link so that no user traffic (including spanning-tree advertisements)
is sent or received on VLAN 1.

SUMMARY STEPS

1. configure terminal

2. interface interface-id

3. switchport mode trunk

4. switchport trunk allowed vlan {add | all | except | none | remove} vlan-list

5. end

6. show interfaces interface-id switchport

7. copy running-config startup-config

Catalyst 2960-XR Switch VLAN Configuration Guide, Cisco IOS Release 15.0(2)EX1

OL-29440-01

Configuring VLAN Trunks

Configuring an Ethernet Interface as a Trunk Port