Filter
Top Products
CHAPTER
21-1
Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-29225-01
21
Configuring L2TPv3 Over UDP/IP
Layer 2 Tunneling Protocol (L2TPv3), is a tunneling protocol that enables tunneling of Layer 2 packets
over IP core networks.
L2TPv3 tunnel is a control connection between the end points. One L2TPv3 tunnel can have multiple
data connections, and each data connection is termed as an L2TPv3 session. The control connection is
used to establish, maintain, and release sessions. Each session is identified by a unique session ID.
To provide the tunneling service to Ethernet traffic, L2TPv3 feature employs:
• L2TPv3
• Pseudowire (PW) technology
Prerequisites
These are the prerequisites for configuring L2TPv3:
• IP routing must be enabled before configuring L2TP-class
This command enables IP routing:
ip routing
• IP CEF must be enabled
This command enables IP CEF:
ip cef
• Subinterfaces for Vlans must be created
These commands create subinterfaces for VLANs:
interface Dot11Radio interface number.sub-interface number
encapsulation dot1Q vlan id
bridge-group bridge id
interface GigabitEthernet0.sub-interface number
encapsulation dot1Q vlan id
bridge-group bridge id