Specifications

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Cisco 1751 Router Software Configuration Guide
OL-1070-01
Example
The following is sample output from the debug vlan packet output.
Router# debug vlan packet
Virtual LAN packet information debugging is on
encapsulation dot1q
To enable IEEE 802.1Q encapsulation of traffic on a specified subinterface in virtual LANs, use the
encapsulation dot1q command in subinterface configuration mode. IEEE 802.1Q is a standard
protocol for interconnecting multiple switches and routers and for defining VLAN topologies.
encapsulation dot1q vlan-id
Syntax Description
Default
Disabled
Command Mode
Subinterface configuration
Usage Guidelines
IEEE 802.1Q encapsulation is configurable on Fast Ethernet interfaces.
Example
The following example encapsulates VLAN traffic using the IEEE 802.1Q protocol for VLAN 100:
interface fastethernet 0/0.100
encapsulation dot1q 100
show vlans
To view virtual LAN (VLAN) subinterfaces, use the show vlans privileged EXEC command.
show vlans
Syntax Description
This command has no arguments or keywords.
vlan-id Virtual LAN identifier. The allowed range is from 1 to 1000.