Juniper JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010, Configuration Manual

Page: 229 / 398

Chapter 22
Configuring QoS for L2TP Sessions
This chapter provides information for configuring QoS for L2TP sessions.
QoS topics are discussed in the following sections:
■
Providing QoS for L2TP Overview on page 197
■
Sample Scheduler Hierarchies for L2TP on page 197
■
Configuring QoS for an L2TP Session on page 199
■
Configuring QoS for Tunnel-Server Ports for L2TP LNS Sessions on page 202
■
QoS and L2TP TX Speed AVP 24 Overview on page 203
■
Monitoring QoS Configurations for L2TP on page 204
Providing QoS for L2TP Overview
The JUNOSe software supports QoS queues and scheduler nodes for L2TP session
interfaces. L2TP QoS provides per–L2TP session queuing and allows QoS profiles to
be dynamically attached to L2TP session interfaces on E Series Broadband Services
Routers. The routers can be configured as either an LAC or LNS.
The dynamic attachment process uses RADIUS and AAA, enabling a QoS profile to
be attached to a dynamic L2TP session interface when the newly created interface
has the QoS-Profile-Name [26-26] RADIUS VSA associated with it. L2TP QoS support
gives you the ability to shape tunneled users through L2TP interfaces.
L2TP QoS profiles are attached at the L2TP session interface, except on the LNS with
nonmultilink interfaces. On the LNS with nonmultilink interfaces, L2TP QoS profiles
are attached at the IP interface. The queues and scheduler node are built at the L2TP
client interface on the line module.
Sample Scheduler Hierarchies for L2TP
The figures in this section show the different scheduler hierarchies that you can build
for QoS over L2TP. The type of networking architecture in which the QoS profile is
used determines the actual hierarchy that is built.
Figure 52 on page 198 through Figure 56 on page 199 show scheduler hierarchies for
different networking architectures.
Providing QoS for L2TP Overview
■ 197