Cisco NM-8B-U - HW ROUTERS L-M User Manual page 51

16- and 36-Port Ethernet Switch Module for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series
Verifying an Ethernet Interface as a Layer 2 Trunk
Use the following show commands to verify the configuration of an Ethernet interface as a Layer 2 trunk:
Step 1
Router# show running-config interface fastethernet 5/8
Building configuration...
Current configuration:
!
interface FastEthernet5/8
no ip address
switchport
switchport trunk encapsulation dot1q
end
Step 2
Router# show interfaces fastethernet 5
Name: Fa5/8
Switchport: Enabled
Administrative Mode: static access
Operational Mode: static access
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: native
Negotiation of Trunking: Disabled
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Protected: false
Unknown unicast blocked: false
Unknown multicast blocked: false
Broadcast Suppression Level: 100
Multicast Suppression Level: 100
Unicast Suppression Level: 100
Voice VLAN: none
Appliance trust: none
Step 3
Router# show interfaces fastethernet 5/8 trunk
Port
Fa1/15
Port
Fa1/15
Port
Fa1/15
Port
Fa1/15
Mode Encapsulation
off 802.1q
Vlans allowed on trunk
1
Vlans allowed and active in management domain
1
Vlans in spanning tree forwarding state and not pruned
1
/
8 switchport
Status Native vlan
not-trunking 1
Cisco IOS Release 12.2(2)XT, 12.2(8)T, and 12.2(15)ZJ
Configuration Tasks
51