Cisco Systems EA6500 Manual De Usuario

Router# show interfaces fastethernet 5/8 switchport 

Name: Fa5/8

Switchport: Enabled

Administrative Mode: dynamic desirable

Operational Mode: trunk

Administrative Trunking Encapsulation: negotiate

Operational Trunking Encapsulation: dot1q

Negotiation of Trunking: Enabled

Access Mode VLAN: 1 (default)

Trunking Native Mode VLAN: 1 (default)

Trunking VLANs Enabled: ALL

Pruning VLANs Enabled: ALL

Router# show interfaces fastethernet 5/8 trunk 

Port      Mode         Encapsulation  Status        Native vlan

Fa5/8     desirable    n-802.1q       trunking      1

Port      Vlans allowed on trunk

Fa5/8 1-1005

Port      Vlans allowed and active in management domain

Fa5/8 1-6,10,20,50,100,152,200,300,303-305,349-351,400,500,521,524,570,801-8

02,850,917,999,1002-1005

Port      Vlans in spanning tree forwarding state and not pruned

Fa5/8 1-6,10,20,50,100,152,200,300,303-305,349-351,400,500,521,524,570,801-8

02,850,917,999,1002-1005

Router# 

If you assign a LAN port to a VLAN that does not exist, the port is shut down until you create the VLAN 
in the VLAN database (see the 

To configure a LAN port as a Layer 2 access port, perform this task:

Router(config)# interface type

1

 slot/port 

Selects the LAN port to configure.

Router(config-if)# shutdown 

(Optional) Shuts down the interface to prevent traffic flow 
until configuration is complete.

Router(config-if)# switchport 

Configures the LAN port for Layer 2 switching.

You must enter the switchport command once 
without any keywords to configure the LAN port 
as a Layer 2 port before you can enter additional 
switchport commands with keywords.

Router(config-if)# no switchport 

Clears Layer 2 LAN port configuration.

Router(config-if)# switchport mode access 

Configures the LAN port as a Layer 2 access port.

Router(config-if)# no switchport mode 

Reverts to the default switchport mode (switchport mode 
dynamic desirable).