Cisco 7604 Configuration Manual page 157

Chapter 10 Configuring LAN Ports for Layer 2 Switching
Configuration and Verification Examples
This example shows how to configure the Fast Ethernet port 5/8 as an 802.1Q trunk. This example
assumes that the neighbor port is configured to support 802.1Q trunking:
Router# configure terminal
Enter configuration commands, one per line.
Router(config)# interface fastethernet 5/8
Router(config-if)# shutdown
Router(config-if)# switchport
Router(config-if)# switchport mode dynamic desirable
Router(config-if)# switchport trunk encapsulation dot1q
Router(config-if)# no shutdown
Router(config-if)# end
Router# exit
This example shows how to verify the configuration:
Router# show running-config interface fastethernet 5/8
Building configuration...
Current configuration:
!
interface FastEthernet5/8
no ip address
switchport
switchport trunk encapsulation dot1q
end
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
Fa5/8
Port
Fa5/8 1-1005
Port
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
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#
OL-4266-08
Mode Encapsulation
desirable n-802.1q
Vlans allowed on trunk
Vlans allowed and active in management domain
Vlans in spanning tree forwarding state and not pruned
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
Configuring LAN Interfaces for Layer 2 Switching
End with CNTL/Z.
Status Native vlan
trunking 1
10-13