Chapter 11
L2TP Overview
Layer 2 Tunneling Protocol (L2TP) is a client-server protocol that allows Point-to-Point
Protocol (PPP) to be tunneled across a network. This chapter includes the following
topics that provide information for configuring L2TP on the Juniper Networks E Series
Broadband Services Routers.
■
L2TP Overview on page 329
■
L2TP Terminology on page 330
■
Implementing L2TP on page 331
■
Packet Fragmentation on page 333
■
L2TP Platform Considerations on page 334
■
L2TP Module Requirements on page 334
■
Sessions and Tunnels Supported on page 335
■
L2TP References on page 336
L2TP Overview
L2TP encapsulates layer 2 packets, such as PPP, for transmission across a network.
An L2TP access concentrator (LAC), configured on an access device, such as an E
Series router, receives packets from a remote client and forwards them to an L2TP
network server (LNS), on a remote network.
You can configure your router to act as an LAC in pass-through mode in which the
LAC receives packets from a remote client and then forwards them at layer 2 directly
to the LNS.
The E Series router creates tunnels dynamically by using authentication, authorization,
and accounting (AAA) authentication parameters and transmits L2TP packets to the
LNS via IP/User Datagram Protocol (UDP). Traffic travels in an L2TP
session
. A tunnel
is an aggregation of one or more sessions. Figure 7 on page 330 and Figure 8 on
page 330 show the E Series router in typical LAC and LNS arrangements.
L2TP Overview
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Содержание JUNOSE 11.0.X MULTICAST ROUTING
Страница 6: ...vi...
Страница 28: ...xxviii Table of Contents JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 36: ...xxxvi List of Tables JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 42: ...2 Managing Remote Access JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 204: ...164 Managing RADIUS and TACACS JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 274: ...234 CLI Commands Used to Modify RADIUS Attributes JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 292: ...252 Monitoring RADIUS Relay Server JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 336: ...296 RADIUS Client Terminate Reasons JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 368: ...328 Managing L2TP JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 408: ...368 Configuring the Weighted Load Balancing Method JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 444: ...404 PPP Accounting Statistics JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 492: ...452 Monitoring Operational Status within the Current VR Context JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 494: ...454 Managing DHCP JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 510: ...470 DHCP Local Server Configuration Tasks JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 528: ...488 Configuring the Router to Work with the SRC Software JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 556: ...516 Configuring DHCP Relay Proxy JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 616: ...576 Managing the Subscriber Environment JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 632: ...592 Subscriber Management Configuration Examples JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 636: ...596 Monitoring Active IP Subscribers Created by Subscriber Management JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 672: ...632 Monitoring Active IP Subscribers Created by Subscriber Management JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 674: ...634 Managing Subscriber Services JUNOSe 11 0 x Broadband Access Configuration Guide...
Страница 767: ...Part 7 Index Index on page 729 Index 727...
Страница 768: ...728 Index JUNOSe 11 0 x Broadband Access Configuration Guide...