Required Configuration Tasks For Lns; Configuring The Virtual Template Interface; Configuring The Lns To Initiate And Receive L2Tp Traffic - Cisco 10000-2P2-2DC Software Configuration Manual

Chapter 5 Configuring the Layer 2 Tunnel Protocol Access Concentrator and Network Server

Required Configuration Tasks for LNS

To configure the Cisco 10000 series router as an LNS, perform the following required configuration
tasks:
•
•
You must also configure the LAC and RADIUS server to communicate with the LNS. For more
Note
information, see the
documentation.

Configuring the Virtual Template Interface

To configure a virtual template interface, enter the following commands:
Command
Step 1
Router> enable
Step 2
Router# config terminal
Step 3
Router(config)# interface virtual-template
number
Step 4
Router(config-if)# ip vrf forwarding <name>
Step 5
Router(config-if)# ip unnumbered loopback
<number>
Step 6
Router(config-if)# ppp authentication {pap |
chap | ms-chap}

Configuring the LNS to Initiate and Receive L2TP Traffic

To configure the Cisco 10000 router, acting as the LNS, to initiate and receive L2TP traffic, enter the
following commands:
Command
Step 1
Router> enable
Step 2
Router# config terminal
Step 3
Router(config)# vpdn enable
Step 4
Router(config)# vpdn-group group-name
Step 5
Router(config-vpdn)# accept-dialin
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Configuring the Virtual Template Interface, page 5-29
Configuring the LNS to Initiate and Receive L2TP Traffic, page 5-29
"Required Configuration Tasks for LAC" section on page 5-7
Purpose
Enters privileged EXEC mode.
Enters global configuration mode.
Creates a virtual template interface and enters interface
configuration mode.
Maps the virtual template interface to a VRF routing table.
Enables IP without assigning a specific IP address on the
LAN.
Enables PAP or CHAP authentication on the virtual
template interface, which is applied to VAIs.
Purpose
Enters privileged EXEC mode.
Enters global configuration mode.
Enables VPDN networking on the router and informs the
router to look for tunnel definitions in a local database
and on a remote authorization server (home gateway) if
one is present.
Defines a local group name for which you can assign other
VPDN variables. Enters VPDN group configuration mode.
Configures the LNS to accept tunneled PPP connections
from the LAC and creates an accept-dialin VPDN
subgroup.
Cisco 10000 Series Router Software Configuration Guide
L2TP Network Server
or see your RADIUS
5-29