Nortel Networks
L2TP
manual
Troubleshooting
Parameter Hello Timer seconds
Configuring L2TP Services
L2TP Access Concentrator LAC
Site Manager Procedure
How to
What is
Choose Service Attributes
Parameter Enable L2TP
Authorization
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Contents
Configuring L2TP Services
Copyright 1998 Bay Networks, Inc
Bay Networks, Inc. Software License Agreement
Rev
Contents
Chapter Starting L2TP
Appendix B Configuration Examples
Page
Figures
Page
Tables
Page
Preface
Before You Begin
Text Conventions
Italic text
Acronyms
How to Get Help
Bay Networks Technical Publications
Chapter L2TP Overview
Topic
What Is Tunneling?
L2TP Benefits
L2TP Sessions
Components of an L2TP Network
Remote Host
Tunnel Management Server TMS
L2TP Access Concentrator LAC
Remote Access Server RAS
L2TP Network Server LNS
Radius Server
L2TP Network Using a LAC
Examples of L2TP Networks
L2TP Packet Encapsulation
Packet Encapsulation Process
Making a Connection Across an L2TP Network
Security in an L2TP Network
Bay Networks L2TP Implementation
Tunnel Authentication
Tunnel Management
Shows tunnel authentication
Radius User Authentication
Radius Accounting
L2TP IP Interface Addresses
Remote Router Configuration
Remote Router Dialing the LNS
Where to Go Next
If you want to Go to
Page
Chapter Starting L2TP
Radius Server Information
Tunnel Authentication Passwords
Planning Considerations for an L2TP Network
Preparing a Configuration File
Site Manager Procedure You do this System responds
Tools Choose Configuration Manager
Choose Local File , Remote File , or
Enabling L2TP on an Unconfigured WAN Interface
Subnet Mask
Choose Add/Delete
Enabling L2TP on an Existing PPP Interface
Choose Edit Circuit
Configuring L2TP Services
Enabling L2TP on an Existing Frame Relay Interface
Configuration is completed
Site Manager Procedure
Enabling L2TP on an Existing ATM Interface
You do this System responds
Choose Group Protocols
Choose Service Attributes
Choose Protocols
Chapter Customizing L2TP Services
Modifying the L2TP Protocol Configuration
Choose L2TP Configuration
Modifying Radius Server Information
Radius Server on
Changing the LNS System Name
Modifying the Number of L2TP Sessions Permitted
Keeping the Remote User’s Domain Name
Set the Remove Domain Name
Changing the Domain Name Delimiter
Set the Domain Name Delimiter
Enabling Tunnel Authentication
Choose Tunnel Authentication
Modifying L2TP IP Interface Addresses
Choose L2TP IP Interface
Disabling RIP
Disabling L2TP
Customizing L2TP Services
Deleting L2TP from a PPP Interface
Deleting L2TP from a Frame Relay Interface
Deleting L2TP from an ATM Interface
Site Manager Procedure
Appendix a L2TP Parameters
Topic
L2TP Configuration Parameters
Figure A-1. L2TP Configuration List Window
Parameter Receive Window Size
Parameter Enable L2TP
Parameter Max L2TP Sessions
Parameter Maximum Retransmit
Parameter Retransmit Timer seconds
Parameter Hello Timer seconds
Parameter Radius Primary Server IP Address
Parameter Ack Timeout milliseconds
Parameter LNS System Name
Parameter Tunnel Flow Control
Parameter Radius Primary Server Password
Parameter Radius Client IP Address
Parameter Remove Domain Name
Parameter Domain Name Delimiter
L2TP Tunnel Security Parameters
Figure A-2. L2TP Tunnel Security List Window
Parameter Enable Tunnel Authentication
Parameter Tunnel Authentication Password
L2TP IP Interface Parameters
Figure A-3. L2TP IP Interface List Window
Parameter L2TP IP Interface Address
Parameter Subnet Mask
Parameter RIP Enable
Appendix B Configuration Examples
Example 1 Remote PC Calling the Corporate Network
Configuring the Remote Hosts
Figure B-1. L2TP Network with PCs at the Remote Site
Configuring the LACs and the TMS
Configuring the LNS
Domain name baynetworks.com
Parameter Name Value IP Address 192.32.16.55
Data Path Through the Network
L2TP IP Interface window, enter the L2TP IP address
Example 2 Remote Router Calling the Corporate Network
Figure B-2. L2TP Network with Routers at the Remote Site
Parameter Name Value RFC1661 Compliance Enable
Configuring the Dial-on-Demand Circuit
Configuring the PPP Interface
Appendix C Troubleshooting
Problem What to Do
Table C-1 Common L2TP Network Problems and Solutions
Index
L2TP
Index-2
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